By using the reverse-engineering principle, the following calculation and explain in the detail on the possible assessment and decision making made. Your answer must be based from the perspective of Engineering Economics and justification is needed for each points made. Provide five (5) points with justifications. PW A
=
=
−[C ′
(A/P,10%,0)](P/A,10%,0)
−[C ′
(A/P,10%,3,6,9,12)](P/A,10%,3,6,9,12)
−[X ′
(A/P,10%,0)](P/A,10%,0)
−[X ′
(A/P,10%,3,6,9,12)](P/A,10%,3,6,9,12)
+4D
+E
−G(P/A,10%,15)
−H(P/F,10%,2.5,5.5,8.5,11.5,14.5)
−4 J
−[C ′
(A/P,10%,0)](P/A,10%,0)
−[C ′
( A/P,10%,5,10)](P/A,10%,5,10)
−[X ′
(A/P,10%,0)](P/A,10%,0)
−[X ′
( A/P,10%,5,10)](P/A,10%,5,10)
+2M
+E
−Q(P/A,10%,15)
−H(P/F,10%,2.5,5.5,8.5,11.5,14.5)
−3 J
−W(P/F,10%,3.5,8.5,13.5)
Answers
The provided equation represents a calculation using the reverse-engineering principle in Engineering Economics. It involves various components such as costs, revenues, discounts, and interest rates. The assessment and decision-making process can be based on evaluating the present worth (PW) of different factors over time, taking into account cash flows, timing, and the discount rate.
PW calculation for costs and revenues: The equation includes terms like C'(A/P) and X'(A/P), which represent costs and revenues respectively. By evaluating the present worth of these costs and revenues at different points in time (0, 3, 6, 9, 12), the assessment can determine the overall profitability and financial feasibility of the project or investment. This helps in making decisions by comparing the net present value (NPV) of costs and revenues.
Discounting factor consideration: The terms (P/A) and (P/F) with specified interest rates (10% and 2.5%) represent discounting factors. These factors account for the time value of money and adjust future cash flows to their present worth. By discounting future costs, revenues, and other factors, the assessment can accurately evaluate their impact on the project's profitability. Decision-making can then be based on comparing the discounted values and considering the overall financial viability.
Incorporating depreciation and taxes: The equation includes terms like D, E, G, and J, which likely represent factors related to depreciation, taxes, and other financial considerations. By including these factors in the calculation, the assessment can account for the effect of depreciation on costs and revenues, as well as the impact of taxes on cash flows. This helps in making informed decisions by considering the tax implications and the overall financial performance of the project.
Sensitivity analysis and multiple scenarios: The equation includes terms such as (10%, 15) and (3.5, 8.5, 13.5), which represent different interest rates and time periods. By incorporating these variables, the assessment can perform sensitivity analysis and evaluate the project's performance under various scenarios. Decision-making can then involve assessing the project's robustness and resilience to changes in interest rates and timing.
Considering miscellaneous factors: The equation includes terms like M, Q, and W, which likely represent additional factors that may affect the assessment and decision-making process. These factors can be specific to the project or investment under consideration. By including these miscellaneous factors, the assessment can account for unique aspects and make decisions based on a comprehensive evaluation of all relevant elements.
In summary, the provided equation involving the reverse-engineering principle allows for a comprehensive assessment and decision-making process in Engineering Economics. By evaluating the present worth of costs, revenues, discounts, depreciation, taxes, and other factors, the assessment can determine the financial feasibility and profitability of the project or investment. Sensitivity analysis and consideration of miscellaneous factors further enhance the decision-making process, leading to informed choices based on a thorough evaluation of all relevant variables.
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Related Questions
2023 ariya has an available portable 120/240-volt evse cable that can be used for ________.
Answers
The portable 120/240-volt evse cable is used for standard charging connected to a 240-volt outlet and trickle charging when connected to a 120-volt outlet.
What do you mean by portable cable?A cable with multiple conductors that are used for temporary electrical power connections requires flexibility is called as a portable cord.
Portable cable is allowed for Standard charging connected to a 240-volt outlet and Trickle charging when connected to a 120-volt outlet. This is an outlet for charging that is added to the Ariya vehicle by the Nissan manufacturer.
hence, The portable 120/240-volt evse cable is used for standard charging connected to a 240-volt outlet and trickle charging when connected to a 120-volt outlet.
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An automobile having a mass of 1100 kg initially moves along a level highway at 120 km/h relative to the highway. It then climbs a hill whose crest is 80 m above the level highway and parks at a rest area located there. Use a reference with kinetic and potential energy each equal to zero for the stationary highway before the hill. Let g = 9.81 m/s^2.
For the automobile, determine its change in kinetic energy and its change in potential energy, both in kJ. For the automobile, determine its change in kinetic energy, in kJ.
a. -8594
b. -663.1
c. -6.63x10^5
d. 663.1
Answers
Answer:
\(-6111.11\ \text{kJ}\)
\(863.28\ \text{kJ}\)
Explanation:
m = Mass of automobile = 1100 kg
v = Velocity of car = 120 km/h = \(\dfrac{120}{3.6}\ \text{m/s}\)
h = Height of hill = 80 m
g = Acceleration due to gravity = \(9.81\ \text{m/s}^2\)
Change in kinetic energy
\(KE=\dfrac{1}{2}m(u^2-v^2)\\\Rightarrow KE=\dfrac{1}{2}\times 1100\times (0-(\dfrac{120}{3.6})^2)\\\Rightarrow KE=-611111.11\ \text{J}\)
Change in kinetic energy is \(-6111.11\ \text{kJ}\)
Change in potential energy is given by
\(PE=mgh\\\Rightarrow PE=1100\times 9.81\times 80\\\Rightarrow PE=863280\ \text{J}\)
The change in potential energy is \(863.28\ \text{kJ}\).
Which technical practice incorporates build-time identification of security vulnerabilities in the code?
Answers
Technical practice incorporates build-time identification of security vulnerabilities in the code is Penetration testing.
What is Penetrating Testing?A penetration test, sometimes referred to as a pen test or ethical hacking, is a legitimate simulated cyberattack on a computer system that is carried out to analyze the system's security. This is distinct from a vulnerability assessment.
In order to identify and illustrate the financial effects of a system's vulnerabilities, penetration testers employ the same tools, strategies, and procedures as attackers. Reconnaissance, scanning, vulnerability assessment, exploitation, and reporting are the five stages of a penetration test.
Penetration testing is a technical activity that includes build-time discovery of security vulnerabilities in the code.
Penetration tests are essential to an organization's security because they teach staff members how to respond to any kind of intrusion from a malicious party. Pen tests are a method of determining whether a company's security procedures are actually effective.
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14. Low resistance combined with current flow is the description of a/an
A. heater
B. impedance mismatch.
C. electric shock.
D. electrical circuit.
Answers
a commercial refrigerator with r-134a as the working fluid is used to keep the refrigerated space at -35 c by rejecting waste heat to cooling water that enters the condenser at 18 c at a rate of 0.25 kg/s and leaves at 26 c. the refrigerant enters the condenser at 1.2 mpa and 50 c and leaves at the same pressure subcooled by 6 c. if the compressor consumes 3.3 kw of power , determine (a) the mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.
Answers
At 1.2mpa pressure and 50c
What is pressure?
By pressing a knife against some fruit, one can see a straightforward illustration of pressure. The surface won't be cut if you press the flat part of the knife against the fruit. The force is dispersed over a wide area (low pressure).
a)Mass flow rate of the refrigerant
Therefore h1= condenser inlet enthalpy =278.28KJ/Kg
saturation temperature at 1.2mpa is 46.29C
Therefore the temperature of the condenser
T2 = 46.29C - 5
T2 = 41.29C
Now,
d)power consumed by compressor W = 3.3KW
Q4 = QL + w = Q4
QL = mR(h1-h2)-W
= 0.0498 x (278.26 - 110.19)-3.3
=5.074KW
Hence refrigerator load is 5.74Kg
(COP)r = 238/53
(Cop) = 4.490
Therefore the above values are the (a) mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.
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sketch the graph of the function y=(sinx)/(x**2-1)?
Answers
The graph of the function y = (sin x)/(x * 2-1) is given in the attached image.
What is a graph?Recall that a graph is a visual representation of data or depiction of the mathematical relationships between various factors in a mathematical function.
A function in math is a rule, or theorem defining a connection between one variable (the independent variable) and another (the dependent variable).
It is to be noted that functions are common in mathematics and are required for the formulation of physical connections in the sciences.
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Energy- Rich produces two products, A and B, which have profits of $9 and $7, respectively. Each unit of product must be processed on two assembly lines, where the required production times are as follows:
Product Hours/Unit
Line 1 Line 2
A
12
4
B
4
8
Total hours 60
40
a. Formulate a linear programming model to determine the optimal product mix that will maximize profit.
(8
points)
b. Solve this model by using graphical analysis
(12 points)
Answers
The maximum profit of $180 is obtained by producing 20 units of product A and 0 units of product B.
a. Linear Programming Model:
Let us assume that x and y be the units of A and B, respectively, that are produced. Then, the linear programming model can be formulated as:
Maximize Z = 9x + 7y,
Subject to:2x + 4y ≤ 40(Assembly Line 1)4x + 8y ≤ 60(Assembly Line 2)x ≥ 0, y ≥ 0b.
Graphical Analysis:
Given below is the graph of the constraints for the given problem, To find out the solution graphically, we need to look at the vertices of the feasible region, and then choose the one that will maximize our objective function.
The coordinates of the vertices of the feasible region are,(0, 10), (6, 7.5), (15, 5), and (20, 0).
By substituting these values in the objective function, we get the following results:
(0, 10): Z = 7 × 10 = 70(6, 7.5): Z = 9 × 6 + 7 × 7.5 = 94.5(15, 5): Z = 9 × 15 + 7 × 5 = 150(20, 0): Z = 9 × 20 = 180
Hence, the maximum profit of $180 is obtained by producing 20 units of product A and 0 units of product B.
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what feature on some network switches can be used to detect faked arp messages?
Answers
Some network switches have a feature called Dynamic ARP Inspection (DAI) that can be used to detect faked ARP messages. DAI helps protect the network by validating ARP packets and ensuring the content loaded in them is accurate and legitimate.
On some network switches, a function known as "content loaded" can be used to recognise false ARP messages. With the use of this functionality, the switch can check for any anomalies or discrepancies in the contents of packets that are going through it, including ARP messages, that might point to a phoney or malicious message. The switch can protect the network's security and integrity by employing this capability to assist stop ARP spoofing attacks.In a network, Address Resolution Protocol (ARP) packets are verified by Dynamic ARP Inspection (DAI), a security feature. A network administrator can intercept, log, and delete ARP messages that have faulty MAC address to IP address bindings using DAI. With this feature, the network is shielded against some "man-in-the-middle" assaults.
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to perform a thorough inspection of brake pads, you should do all of the following except: group of answer choices inspect the pads to see if they are wearing evenly. inspect all pads, retaining hardware, and anti-noise shims. measure the remaining brake pad thickness and compare to specifications. measure the pad-to-caliper piston clearance.
Answers
Answer:
measure the pad-to-caliper piston clearance.
Tony works as a Sorter in a processing factory. Which qualifications does he most likely have?
teaching skills, for helping people perform farm tasks, and creative thinking skills, for finding ways to process food
safety skills, for handling tools and food products, and honesty, for following rules and regulations
accuracy, for closely inspecting equipment and operating heavy machinery safely
accuracy, for monitoring animals, and patience and determination, for observing and caring for animals
Answers
Answer:
answer is B
Explanation:
A total of 10 rectangular aluminum fins (k = 203 W/m·K) are placed on the outside flat surface of an electronic device. Each fin is 100 mm wide, 20 mm high and 4 mm thick. The fins are located parallel to each other at a center-to-center distance of 8 mm. The temperature at the outside surface of the electronic device is 72°C. The air is at 20°C, and the heat transfer coefficient is 80 W/m^2·K. Determine:
a. the rate of heat loss from the electronic device to the surrounding air
b. the fin effectiveness.
Answers
Answer:
a. the rate of heat loss from the electronic device to the surrounding air
A total of 10 rectangular aluminum fins (k = 203 W/m·K) are placed on the outside flat surface of an electronic device. Each fin is 100 mm wide, 20 mm high and
4 mm thick. The fins are located parallel to each other at a center-to-center distance of 8 mm. The temperature at the outside surface of the electronic device is 72°C. The air is at 20°C, and the heat transfer coefficient is 80 W/m2·K. Determine (a) the rate of heat loss from the electronic device to the surrounding air and (b) the fin effectiveness.
Explanation:
Sorry if wrong, Hope I helped
~#Lilly
A cube of edge 4 inches is cut by a plane containing 2 diagonally opposite edges
of the cube find the area of the section formed.
Answers
Answer:
So its area A = 4 * 4sqrt(2) = 16sqrt(2) inches^2
Explanation:
In order to find the area of the section, we need to find the length of one of the diagonals.
Using the Pythagorean Theorem, a^2 + b^2 = c^2, we pick any side of the cube which in
itself is a square with sides 4 inches each. The length of the diagonal of the square is
2(4^2) = c^2 or c = 4sqrt(2).
To calculate the area of the section, we must first determine the length of one of the diagonals. Using the Pythagorean Theorem, \(\bold{a^2 + b^2 = c^2}\), one selects any side of the cube which in its a square with four-inch sides.
The diagonal of a square has a length:\(\to 2(4^2) = c^2 \\\\ \to c = 4\sqrt{(2)}\)
A section is now a rectangle with sides 4 and \(4\sqrt{(2)}\). So its area\(\to A = 4 \times 4\sqrt{(2)} = 16\sqrt{(2)}\ inches^2\)
Therefore, the answer is "\(\bold{ 16\sqrt{(2)}\ inches^2}\)".
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EMISSIONS ASSESSMENT
What is the best recommendation you can make to your
customers to prevent emissions systems failure?
Running only ethanol-free gas in their vehicle
Wait until the gas light comes one before filling the car up
Regular maintenance of the fuel and emissions system
Regularly grease tie rod ends
Select Submit
Answers
Answer:
The best recommendation to prevent emissions systems failure is to regularly maintain the fuel and emissions system.
Explanation:
what is an OTG USB? how is it useful
Answers
Answer:
An OTG or On The Go adapter (sometimes called an OTG cable, or OTG connector) allows you to connect a full sized USB flash drive or USB A cable to your phone or tablet through the Micro USB or USB-C charging port
Explanation:
pls mark brainliest
Question One a) Given a four-cylinder cycle engine with a 90-mm bore, 100-mm stroke, and a (6 marks) clearance volume of 0.106 L, calculate the total engine displacement, the compression ratio, Is this engine a petrol engine or diesel engine and explain why? i. ii. iii. h) Explain briefly the principle of
Answers
a) The total engine displacement of the four-cylinder cycle engine is calculated by multiplying the bore, stroke, and clearance volume together. In this case, it would be 90 mm x 100 mm x 0.106 L, which equals 9.54 L. The compression ratio is calculated by dividing the clearance volume by the total engine displacement. In this case, it would be 0.106 L/9.54 L, which equals 1.11.
It is not possible to determine whether this engine is a petrol engine or a diesel engine without more information. Petrol and diesel engines differ in the way they ignite the fuel-air mixture, with petrol engines using spark plugs and diesel engines using compression. The compression ratio can be an indicator of whether an engine is a petrol or diesel, as diesel engines typically have higher compression ratios than petrol engines. However, this engine has a compression ratio of 1.11, which does not provide enough information to determine the type of engine.
h) The principle of four-stroke cycle engines is that the piston moves up and down four times in the cylinder during a single cycle. The four strokes are the intake stroke, compression stroke, power stroke, and exhaust stroke. During the intake stroke, the intake valve opens to allow air and fuel to enter the cylinder. During the compression stroke, the intake valve closes and the piston compresses the air-fuel mixture. During the power stroke, the spark plug ignites the air-fuel mixture, causing the piston to move down and generating power. During the exhaust stroke, the exhaust valve opens and the piston pushes the exhaust gases out of the cylinder.
Syslog is a secure protocol without any further configuration. True or False
Answers
The given statement "syslog is a secure protocol without any further configuration." is false. It is because while syslog is a protocol used for logging, it is not inherently secure and additional configuration may be needed to ensure its security, such as encryption or access controls.
By default, syslog sends data in plaintext, which can be intercepted and read by anyone who has access to the network traffic. To ensure the confidentiality and integrity of syslog messages, additional measures such as encryption and digital signatures need to be implemented. For example, using the Transport Layer Security (TLS) protocol to encrypt the syslog traffic can provide secure transmission of syslog messages.
Therefore, it is important to configure syslog with appropriate security measures to ensure its secure operation.
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What are the limitations of portable computers?
Answers
You can read about it here https://www.cornellcollege.edu/information-technology/policies/technology-policies/limitations-of-laptops.shtml
design process 8 steps with definition
Answers
Answer:
Step 1: Define the Problem.
Step 2: Do Background Research. .
Step 3: Specify Requirements. .
Step 4: Brainstorm, Evaluate and Choose Solution.
Step 5: Develop and Prototype Solution.
Step 6: Test Solution.
Step 7: Does Your Solution Meet the Requirements?
Step 8: Communicate Results.
can u tell me the definition tho?
palled correctly as “though” which is an alternate form of “although”) at the end is informal usage. It's better placed before “she seems better today
How is the national saving in an open economy calculated?
Answers
The national savings in an open economy is calculated by adding private savings, public savings, and net capital inflows.
What is economy?
The creation, distribution, and exchange of goods and services, as well as their consumption, constitute the economy. It is broadly defined as a "social realm emphasising actions, discourses, and material expressions associated with the development, use, and management of finite resources." A given economy is a set of activities with primary variables such as culture, values, education, technological evolution, history, social organisation, political structure, legal systems, and natural resources. These factors provide context and content, as well as the conditions and parameters that govern an economy. Alternatively, the economic sphere is a social world of interconnected human activities and transactions that does not exist in isolation.
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Please solve this question by analytical method and by
constructing couple and force polygon
The Balancing of Rotor Masses equipment as demonstrated in the Mechanical Engineering Department in CIT is shown below in Fig Q2a. Initially there are five disks on a shaft which were demonstrated to
Answers
The Balancing of Rotor Masses equipment can be balanced through analytical methods and constructing couple and force polygons.
The analytical method involves calculating the unbalanced force and the position of the counterweights required to balance the system.
To construct the couple polygon, draw a line representing the axis of rotation and another line representing the unbalanced force. Draw a perpendicular line to the unbalanced force line to represent the distance between the axis of rotation and the unbalanced force. This line is the moment arm. Draw a vector on the moment arm line representing the unbalanced force. Draw another vector perpendicular to the unbalanced force vector, representing the magnitude of the counterweight required. The direction of this vector represents the location of the counterweight.
To construct the force polygon, draw a line representing the axis of rotation and another line representing the unbalanced force. Draw a perpendicular line to the unbalanced force line to represent the distance between the axis of rotation and the unbalanced force. This line is the moment arm. Draw a vector on the moment arm line representing the unbalanced force. Draw another vector on the axis of rotation line representing the magnitude and direction of the counterweight required to balance the system.
Using either method, the Balancing of Rotor Masses equipment can be balanced effectively, ensuring smooth operation and reducing wear and tear on the system.
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Hydraulic fluid is primarily used to
in a hydraulic system.
of
Select one:
a. drive the pump
b. heat up the pump
c. reduce torque
d. transfer energy
Hll
Answers
Answer:
hydraulic flute is energy transfer medium in all hydraulic system this simple function is only achieved by flute that does not easily trap gases trapped gas and forming problems should bring a higher level of compressibility to a fluid than its usual at a point to support a very steep pass trekking system
Decision Variables
Parameters/Data
The Objective Function (in English words)
The Constraints (in English words)
Design Situation A
A contractor can sell several classes of concrete at a different price per-ton for each class. The materials specification for each class of concrete allows the percentage by weight of cement, sand, and gravel to range between certain upper and lower bounds. The contractor knows the unit cost (cost per-pound) to the company for each of the three components of concrete, and how much of each component that is available for the company to purchase. The amount of concrete of each type that the contractor can sell is limited but known. (Hint: This problem has a maximization objective function, not minimization.)
Answers
Decision variables are the values that the decision maker can control and choose in a decision-making problem. Parameters are fixed values that affect the outcome of a decision-making problem but are not under the control of the decision maker.
What are the Decision variables, Parameters, Objective Function and Constraints in the given problem?
Decision Variables:
Number of tons of each class of concrete to be sold.Parameters/Data:
Price per ton for each class of concrete.Upper and lower bounds for the percentage by weight of cement, sand, and gravel for each class of concrete.Unit cost (cost per pound) of cement, sand, and gravel.Available amount of cement, sand, and gravel for the company to purchase.Limitations on the amount of concrete of each type that the contractor can sell.Objective Function:
Maximize the total profit, which is the sum of the profits from selling each class of concrete.Constraints:
The total amount of cement, sand, and gravel used in producing each class of concrete cannot exceed the available amount of each material.The percentage by weight of cement, sand, and gravel used in producing each class of concrete must fall within the specified upper and lower bounds.The total amount of each class of concrete sold cannot exceed the limitation on the amount that can be sold.To learn more about Parameters, visit: https://brainly.com/question/30655786
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Air expands through a turbine from 8 bar, 960 K to 1 bar, 450 K. The inlet velocity is small compared to the exit velocity of 90 m/s. The turbine operates at steady state and develops a power output of 2500 kW. Heat transfer between the turbine and its surroundings and potential energy effects are negligible. Modeling air as an ideal gas, calculate the mass flow rate of air and the exit area.
Answers
This question is incomplete, the missing diagram is uploaded along this answer below.
Answer:
- The mass flow rate of air is 4.59 kg/s
- Area of the exit turbine is 0.066 m²
Explanation:
Given the data in the question;
Using air as an ideal gas.
Turbine;
state 1: p₁ = 8 bar, T₁ = 960 K
state 2: p₂ = 1 bar, T₂ = 450 K
The inlet velocity is small compared to the exit velocity of 90 m/s
V₁ < V₂ = 90 m/s
Power of turbine W' = 2500 kW
Now, lets assume Q = 0 and ΔPE = 0
we know that; R = 0.2870 kJ/kg-K
Also. \(C_p\) at 700K = 1.075 kJ/kg-K
Now, using ideal gas law;
STATE1
v₁ = RT₁/p₁
so we substitute
v₁ = [(0.2870 kJ/kg-K)(960 K)/(8 bars )]|\(\frac{bar}{10^5N/m^2}\)||\(\frac{1000N.m}{kJ}\)| = 0.344 m³/kg
STATE2
v₂ = RT₂/p₁
we substitute
v₂ = [(0.2870 kJ/kg-K)(450 K)/(1 bars )]|\(\frac{bar}{10^5N/m^2}\)||\(\frac{1000N.m}{kJ}\)| = 1.2915 m³/kg
Now, from energy balance steady state;
0 = Q" - W" + \(m"_i\)( \(h_i\) + \(\frac{V_i^2}{2}\) + \(gz_i\)) - \(m"_B\)( \(h_B\) + \(\frac{V_B^2}{2}\) + \(gz_B\))
since we initially assume Q = 0 and ΔPE = 0
hence;
0 = \(-\frac{W"}{m"}\) + h₁ + \(\frac{V_1^2}{2}\) - h₂ + \(\frac{V_2^2}{2}\)
\(\frac{W"}{m"}\) = h₁ + \(\frac{V_1^2}{2}\) - h₂ + \(\frac{V_2^2}{2}\)
⇒ \(\frac{W"}{m"}\) = \(C_p\)(T₁ - T₂) + \(\frac{1}{2}\)( V₁² - V₂²)
we solve for m"
m" = W" / (\(C_p\)(T₁ - T₂) + \(\frac{1}{2}\)( V₁² - V₂²))
so we substitute;
m" = {[2500 kW] / [(1.075kJ/kg-K(960K - 450k) + \(\frac{1}{2}\)( (0)² - (90 m/s)²)) |kJ/1000N.m| |N/kg.m/s²|]} | kJ/s / kW|
m" = 4.59 kg/s
Therefore, the mass flow rate of air is 4.59 kg/s
From the mass body steady state;
0 = m"₁ - m"₂
so
m"₁ = m"₂ = 4.59 kg/s
now, the volumetric flow rate V"₂ will be;
V"₂ = m" × v₂
we substitute
V"₂ = 4.59 kg/s × 1.2915 m³/kg = 5.93 m³/s
and
the volumetric flow rate V"₂ = A₂V₂
so;
Exit Area A = V"₂ / V₂
we substitute
A = (5.93 m³/s ) / (90 m/s)
A = 0.06589 ≈ 0.066 m²
Therefore, Area of the exit turbine is 0.066 m²
1. (a) What are the standards used for calibration? Mention at least three primary standards in the temperature range 10 to 1000 k (b) Define sensitivity. How does it change in a linearly varying measurement vs exponential system. 2.18( Page.31) 2. A voltmeter with a range of 0 to 100 V reads 2 V when the leads are shorted together. The manufacturer claims an accuracy of ±4% of full scale. Estimate the maximum error when reading a voltage of 80 V in both volts and as a percentage of reading. If the voltmeter is adjusted so that the reading when the leads are shorted together is 0V, estimate the maximum percent error when reading 80 V.
Answers
In the temperature range of 10 to 1000 K, some primary standards used for calibration.
The ITS-90 international temperature scale: It is based on specifying the thermodynamic temperatures of a number of fixed points on the temperature scale and is the principal temperature standard used globally. PRTs (Platinum Resistance Thermometers): PRTs are resistance thermometers that gauge temperature by measuring the resistance of platinum wire. These precise and stable thermometers are employed to calibrate other temperature sensors. Thermocouples: Thermocouples are temperature sensors that gauge temperature by utilising the Seebeck effect. They are widely utilised in industry, and PRTs and fixed-point cells are employed to calibrate them. Because it is a voltmeter, the maximum percent error when reading 80 V stays the same at 5% even if the voltmeter is set so that the reading when the leads are shorted together is 0 V.
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A firm is considering investing in a new piece of material handling equipment that should save on the current annual labor cost of moving the materials by hand. The device costs $750 can be expected to result in $500 annual savings for years 1, 2, and 3; then, it will have worn out and have to be replaced. Assume the interest rate that determines time value of money for this firm is 7%
Required:
a. What is the payback period for the expenditure of the $1000?
b. Calculate the present worth (PW) of the three years of savings, assuming the savings occur at the end of each year of ownership.
c. Calculate the net present worth (NPW) of the investment.
d. Based on your answers to į and iii, should the firm invest in the equipment?
Answers
Answer:
current sales are 15 millon
Explanation:
For the three-point bending test set up in this lab, what would be the shear force and moment distributions along the beam axis
Answers
Answer: So to calculate the flexural strength (σ), multiply the force by the length of the sample, and then multiply this by three. Then multiply the depth of the sample by itself (i.e., square it), multiply the result by the width of the sample and then multiply this by two
Explanation:
It was estimated that the number of trips between north Davis and the campus during the 8-9 AM peak hour is given by the following trip generation model:
Q = 300 + 5.0(class) + 0.05(students)
where Q is the total number of trips during the peak hour, class is the number of classes taught between 8-9 AM, and students is the number of students on campus. It was further estimated that there are 75 classes taught on campus between 8-9 AM and the student population is 20000. Furthermore, these trips were accomplished by three modes: auto, Unitrans, and bicycles, whose shares are determined by the following multinomial logit choice model:
Um = βm − 0.50C − 0.02T
where C is out-of-pocket cost (dollars) and T is travel time (minutes). Values of βm are:
Auto : 3.50
Unitrans : 3.0
Bicycle : 2.50
Suppose that the cost of an auto trip, which takes 8 minutes, is $5.50 (includes parking); Unitrans, which takes 25 minutes, costs $1.00; bicycle trips take 12 minutes and cost $0.50 per trip.
Required:
a. Compute the total number of trips between north Davis and campus during the morning peak hour.
b. For these trips, compute the number of trips by each mode.
c. In an attempt to reduce the amount of driving to class, UC Davis intends to raise the price of a parking permit. How much does the price of driving have to increase in order to meet their goal of reducing auto trips to campus to 100?
Answers
The price of driving has to increase by $8-$5=$3
How to solve for the increment in pricea. The total number of trips between north Davis and campus during the morning peak hour can be calculated using the trip generation model:
Q = 300 + 5.0(class) + 0.05(students)
Q = 300 + 5.0(75) + 0.05(20000)
Q = 300 + 375 + 1000
Q = 1675
b. The number of trips by each mode can be calculated using the multinomial logit choice model:
Um = βm − 0.50C − 0.02T
For auto:
Ua = 3.50 - 0.50(5.50) - 0.02(8)
= 1.34
For Unitrans: Ub
= 3.00 - 0.50(1.00) - 0.02(25)
= 1.50
For bicycle: Uc
= 2.50 - 0.50(0.50) - 0.02(12)
= 2.14
The number of trips by each mode is given by multiplying the total number of trips by the probability of choosing each mode:
Auto trips:
Pa * Q
≈ 0.24 * 1675 ≈ 402
Unitrans trips:
Pb * Q
≈ 0.28 * 1675 ≈ 469
Bicycle trips:
Pc * Q
≈ 0.48 * 1675 ≈ 804
c. To reduce auto trips to campus to a target of Ta=100, we need to solve for the new cost Ca that satisfies Pa*Q=Ta:
Pa=Ta/Q
=100/1675
≈ 0.06
Solving for Ca in the equation
Pa = exp(Ua)/(exp(Ua)+exp(Ub)+exp(Uc)), we get:
Ca =(βm- ln(Pa*(exp(Ub)+exp(Uc))))/0.5
= 8
So, the price of driving has to increase by $8-$5=$3
in order to meet their goal of reducing auto trips to campus to a target of Ta=100.
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In addition to passing an ASE certification test, automotive technicians must have __________ year(s) of on the job training or __________ year(s) of on the job training and a two-year degree in automotive repair to qualify for certification.
Answers
Which of the following are consequences of burning coal for energy? (mark all that apply) Check All That Apply A. increased levels of CO2 in the atmosphere B. increased heavy metals (lead and mercury) released into the air C. acidified rain D. increased radicals that deplete ozone in the stratosphere:
Answers
The following are consequences of burning coal for energy increased levels of CO2 in the atmosphere, increased heavy metals (lead and mercury) released into the air and Acidified rain. The correct options are a, b and c.
Burning coal produces a number of main emissions: Sulphur dioxide (SO2), which causes respiratory conditions and acid rain, Nitrogen oxides (NOx), which cause respiratory diseases and smog, Particulates that cause lung sickness, respiratory diseases, fog, and haze, The main greenhouse gas produced by burning fossil fuels (coal, oil, and natural gas) is carbon dioxide (CO2).
Mercury and other heavy metals have been associated with developmental and neurological harm in both humans and other animals. Power stations produce bottom ash and fly ash as byproducts of burning coal.
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Appears to meet all the criteria for being an objective.
Is applicable to almost any cognitive learning situation.
Example:
"Given a multiple-choice test, complete the test and achieve a score of at least nine out of ten correct."
Answers
The above-stated example appears to meet all the criteria for being objective. An objective is a goal, target, or aim. An objective provides you with an understanding of what you must accomplish, measure, or do to accomplish a task.
It enables you to concentrate your energies and abilities and chart a course of action to attain the desired result or outcome. An objective is measurable and achievable within a given time frame.The above-stated example of a multiple-choice test appears to meet all the criteria for being an objective. It is applicable to almost any cognitive learning situation. It comprises a clear and concise statement of the desired result or outcome. It is measurable since it defines the precise outcome required, which is to achieve a score of at least nine out of ten correct. The objective is achievable within a given time frame since the test-taker has to complete the test and achieve the stated score.
It is applicable to almost any cognitive learning situation. It comprises a clear and concise statement of the desired result or outcome. It is measurable since it defines the precise outcome required, which is to achieve a score of at least nine out of ten correct. The objective is achievable within a given time frame since the test-taker has to complete the test and achieve the stated score.The example demonstrates a precise and specific outcome that can be measured, making it a well-defined objective. The objective does not include any value judgments or subjective opinions.
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