Develop a project with simulation data of a DC-DC converter: Boost a) 12V output and output current between (1.5 A-3A) b) Load will be two 12 V lamps in parallel/Other equivalent loads correction criteria c) Simulation: Waveforms (input, conversion, output) of voltage and current in general. Empty and with load. d) Converter efficiency: no-load and with load e) Frequency must be specified f) Development of the high frequency transformer, if necessary g) Smallest size and smallest possible mass. Reduce the use of large transformers. Simulation can be done in Multisim.

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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Explanation:

There are 8.35 pounds in a gallon of water. Water weighs 1 gram per cubic centimeter or 1 000 kilogram per cubic meter, i.e. density of water is equal to 1 000 kg/m³; at 25°C (77°F or 298.15K) at standard atmospheric pressure.

Answer:

A. True

Construction engineering focuses on managing the construction process of buildings and infrastructure projects, which involves supervising the creation of the building as well as the design. Construction engineers oversee the construction site, coordinate with different stakeholders, manage the budget, and ensure that the project is completed on time, on budget, and according to the specifications.

Hazmat workers may be required for construction issues involving:

Hazmat workers are trained to handle hazardous materials safely and effectively. In construction, they help to remove materials that are dangerous to workers and the environment.

Asbestos, radioactive waste and lead are dangerous. These workers are trained to safely remove these materials and dispose of them properly. Other hazardous materials such as biologicals or sheet metal requires specialized workers depending on extent of the hazard.

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Answer:

c) can be made with a variety of surface finishes.

Explanation:

The missing options are;

When it comes to concrete work in construction, the concrete can be cast either in-situ or in form of pre-cast concrete.

Now in-situ concrete means concrete done on the construction site being built while pre cast concrete simply means concrete cast outside in a factory or yard and brought to site to mount.

These pre cast concrete could have different surface finishes as required as this is one of it's advantages over in situ because there is a lot of space and room to have the desired concrete finish.

a) are typically manufactured on site and then hoisted into place.

b) cannot be fiber-reinforced.

c) can be made with a variety of surface finishes.

d) never include insulation.

e) often are unreinforced.

Explanation:

I have asked question in my profile please tell me the answer

Answer:

3

Explanation:

Hard drives in a grocery warehouse keep failing because of vibrations in the warehouse environment to install an SSD force in every computer. Install an extra effective electricity delivery in every computer.

Keeping your statistics secured on all fronts may be difficult, however stable country drives (SSDs), with their inherent overall performance advantages, could make this assignment simpler and extra green with the aid of using helping encryption.

Linus Torvalds determined out the difficult manner that stable-country drives (SSDs) are not invincible -- and after they do fail, they could die without caution and at inconvenient times. Install an SSD force in every computer. Install an extra effective electricity deliver in every computer.

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To avoid the falling of the hard drives in the grocery warehouse because of the vibration, an SSD drive should be installed on each computer.

A solid-state drive (SSD) are storage devices that have nonvolatile media storage memory and have greater speed than the HDD. The durability and the efficiency of the SSD are better than the HDD.

By installing SSD an extra and effective electric system is installed that is more profitable than the hard drives. The cost-effectiveness and the lifespan have replaced the HDD with the SSD.

Therefore, installing SSD is the solution to the problem.

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Answer:

i don't know

Explanation:

The benefit for companies with strong safety programs

OSHA Standards are known to be regulations that tells the ways that employers must need to protect their employees from any kind of hazards in the workplace.

Note that The benefit for companies with strong safety programs

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Answer:

No. of transistors = \($4.1524 \times 10^{10}$\) transistors

Explanation:

Given that:

N = \($1920 \times 10^{0.163(Y-1980)}$\)

Y = 2025

N = \($1920 \times 10^{0.163(2025-1980)}$\)

N = \($4.1524 \times 10^{10}$\) transistors

Now at Y = 1980

Number of transistors N = 1920

Therefore,

\($1000 = 10^{0.163(Y-1980)}$\)

\($\log_{10} 1000=0.163(Y-1980)$\)

\($\frac{3}{0.163}=Y-1980$\)

18 ≅ 18.4 = Y - 1980

Y = 1980 + 18

   = 1998

So, to increase multiples of 1000 transistors. it takes 18 years.

Explanation:

most big airports. my father has the same degree and works for southwest airlines

An example of an external irreversibility associated with the Rankine cycle is combustion of fuel. Option C is correct.

The Rankine cycle is defined as a modified thermodynamic cycle that describes how certain heat engines, such as steam turbines or reciprocating steam engines, extract mechanical work from a fluid as it passes between a heat source and a heat sink.

The Rankine cycle, also known as the Rankine Vapor Cycle, is a process that is widely used in power plants such as coal-fired power plants and nuclear reactors. The best example of an external irreversibility associated with the Rankine cycle is combustion of fuel.

Therefore, option C is correct.

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The injection molding department of a company that operates 24x7 uses an average of 34 gallons of special lubricant per day. The usage of lubricant is normally distributed with a standard deviation of 4.4 gallons per day and it takes 6.5 weeks for an order of lubricant to be delivered. If the largest service level is 73% The reorder point for the injection molding department is approximately 1549.508 gallons.

To calculate the reorder point, we need to consider the lead time demand, which is the demand during the time it takes for a new order to be delivered.

Given that the injection molding department operates 24x7 and uses an average of 34 gallons of special lubricant per day, we can calculate the daily demand as 34 gallons.

Since the demand follows a normal distribution with a standard deviation of 4.4 gallons per day, we can use the Z-score formula to calculate the safety stock. The Z-score represents the number of standard deviations from the mean.

To determine the Z-score corresponding to a service level of 73%, we can use a Z-table or a statistical calculator. The Z-score for a 73% service level is approximately 0.57.

Next, we need to calculate the lead time demand. The lead time is given as 6.5 weeks, and since there are 7 days in a week, the lead time is equal to 6.5 x 7 = 45.5 days.

To calculate the lead time demand, we multiply the average daily demand by the lead time in days. Therefore, the lead time demand is 34 gallons/day x 45.5 days = 1547 gallons.

To calculate the reorder point, we add the lead time demand to the safety stock. The safety stock is given by the formula: Safety Stock = Z-score x standard deviation.

Using the given standard deviation of 4.4 gallons per day and the calculated Z-score of 0.57, the safety stock is 0.57 x 4.4 gallons/day = 2.508 gallons.

Finally, we can calculate the reorder point by adding the lead time demand to the safety stock: Reorder Point = Lead time demand + Safety stock.

Reorder Point = 1547 gallons + 2.508 gallons = 1549.508 gallons.

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A data set might follow a variety of non-normal distributions, depending on the nature of the process, the technique of data collection, the sample size, outliers in the data, etc. Below is a list of some of the most significant non-normal distributions; Alpha Distribution Exponential

Several tests, including the t-test, ANOVA, Regression, and DOE, are unaffected by the assumption of normality.

Since no attribute (such as height, weight, etc.) will have a perfectly normal distribution, non-normality is a fact of existence. Using a transformation is one way to make non-normal data resemble regular data.

Therefore, The non-normal data can be analysed in two different ways. Use non-parametric tests, which don't make any assumptions about normality, or convert the data with the right function to make it follow a normal distribution.

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In order to draw the amplitude modulation, connect the power supply to the protoboard, onnect the fixed capacitor (220 microfarads) in parallel with the power supply to filter any noise and connect the fixed resistor (100 ohms) in series with the base of the NPN transistor.

A transmitting device that employs Amplitude Modulation (AM) is a necessary component for transferring information across radio waves.

The audio input is passed through an equipping capacitor C1, barring any Direct Current (DC) potential from the audio generator. Then, transistor Q1 intensively amplifies the incoming signal after its been regulated in a base bias configuration by R1 and R2 voltage dividers.

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If diverse current-bearing conductors are integrated into a raceway, the ampacity of the conductors must be altered to accommodate the elevated amount of heat released due to their close contact.

The recalculation factor relies on the kind of raceway, the number of victuals, and the caliber of the victuals.

As an illustration, per the National Electrical Code (NEC), if five flow conductors inhabit a metal tube, the adjustment portion for 90°C rated cables is fifty percent. This implies that the ampacity of the lines ought to be multiplied by 0.5 or thinned out by half.

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The calculated mean value is 16. The sum of all values divided by the total number of values determines the mean (also known as the arithmetic mean, which differs from the geometric mean) of a dataset.

The term "average" is frequently used to describe this measure of central tendency. By dividing the sum of the given numbers by the entire number of numbers, the mean—the average of the given numbers—is determined. Mean is equal to (Sum of All Observations/Total Observations).

Mean=12+15+17+20/4

=16

Special road signage designate 10-cent zones. At the beginning and finish of the zone, there are signs. There is one space available for as long as three or four hours each day. Only specific hours of the day are subject to the 10 cent rate. There may be a Blue Zone in locations where paid parking is not (yet) in effect.

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(a) Accurately locate a hole position: Reaming is a machining process that removes a small amount of material from the internal surface of a previously drilled hole.

b) Reaming is not used for creating a stepped hole, providing an internal thread, or improving tolerance on hole diameter.

(c) Enlarge a drilled hole: Reaming can also be used to enlarge a previously drilled hole to achieve a specific diameter.

(d) Improve surface finish on a hole: Reaming can improve the surface finish of a previously drilled hole, making it smoother and more even.

Reaming is used for the following three functions:

(a) Accurately locate a hole position: Reaming is a machining process that removes a small amount of material from the internal surface of a previously drilled hole. The process helps to improve the accuracy of the hole by ensuring that the diameter is consistent and round. This makes it easier to locate the hole position accurately.

b) Reaming is not used for creating a stepped hole, providing an internal thread, or improving tolerance on hole diameter.

(c) Enlarge a drilled hole: Reaming can also be used to enlarge a previously drilled hole to achieve a specific diameter. Reaming can produce a high-quality surface finish and a tight diameter tolerance, which makes it an ideal process for achieving precise hole size.

(d) Improve surface finish on a hole: Reaming can improve the surface finish of a previously drilled hole, making it smoother and more even. This can be important when a hole is used for a sliding or rotating part, as a rough surface can cause friction and wear.

Note that reaming is not used for creating a stepped hole, providing an internal thread, or improving tolerance on hole diameter. These functions are typically performed by other machining processes such as drilling, tapping, and honing.

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a. a = 12 is the solution to the given congruence relation. b. the positive integers less than 12 that are relatively prime to 12 are 1, 5, 7, and 11.

(a) The main answer: The integer a that satisfies a ≡ -15 (mod 27) is 12.

To find the value of a, we need to consider the congruence relation a ≡ -15 (mod 27). This means that a and -15 have the same remainder when divided by 27.

To determine the value of a, we can add multiples of 27 to -15 until we find a number that falls within the range of {0, 1,..., 26}. By adding 27 to -15, we get 12. Therefore, a = 12 is the solution to the given congruence relation.

(b) The main answer: The positive integers less than 12 that are relatively prime to 12 are 1, 5, 7, and 11.

Supporting explanation: Two integers are relatively prime if their greatest common divisor (GCD) is 1. In this case, we are looking for positive integers that have no common factors with 12 other than 1.

To determine which numbers satisfy this condition, we can examine each positive integer less than 12 and calculate its GCD with 12.

For 1, the GCD(1, 12) = 1, which means it is relatively prime to 12.

For 2, the GCD(2, 12) = 2, so it is not relatively prime to 12.

For 3, the GCD(3, 12) = 3, so it is not relatively prime to 12.

For 4, the GCD(4, 12) = 4, so it is not relatively prime to 12.

For 5, the GCD(5, 12) = 1, which means it is relatively prime to 12.

For 6, the GCD(6, 12) = 6, so it is not relatively prime to 12.

For 7, the GCD(7, 12) = 1, which means it is relatively prime to 12.

For 8, the GCD(8, 12) = 4, so it is not relatively prime to 12.

For 9, the GCD(9, 12) = 3, so it is not relatively prime to 12.

For 10, the GCD(10, 12) = 2, so it is not relatively prime to 12.

For 11, the GCD(11, 12) = 1, which means it is relatively prime to 12.

Therefore, the positive integers less than 12 that are relatively prime to 12 are 1, 5, 7, and 11.

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Answer:

  151.2 N

Explanation:

The upward force at A is 135/(135+325) times the total weight of the generator. The CW torque about point O that produces is ...

  (460 mm)(135/460)(160 kg)(9.8 m/s^2) = 211.68 N·m

For F to produce half that torque, it must be ...

  F(0.7 m) = (211.68 N·m)/2

  F = 211.68 N·m/(1.4 m) = 151.2 N

The classification of film that attempts to record actuality using primarily either a sociological or a journalistic approach is Documentary. Option 1.

A documentary film is a genre of film that provides factual information about a particular subject or event. Documentaries are usually made to educate or inform the public on some crucial or significant issue or topic.

In a documentary, the director tries to present a factual, objective, and non-biased portrayal of the subject or event.

Documentary films often deal with social, cultural, or historical topics. Documentary films are an excellent way to learn about real-life stories, struggles, and accomplishments.

Hence, the right answer is option 1. Documentary.

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Answer:

Proposed Improvements and Generic Lessons

Within 2 h of losing the signal from the returning spacecraft, NASA’s Administrator established the Columbia Accident Investigation Board (CAIB) to uncover the conditions that had produced the disaster and to draw inferences that would help the US space program to emerge stronger than before (CAIB, 2003). Seven months later, the CAIB released a detailed report that included its recommendations (Starbuck and Farjoun, 2005).

The CAIB (2003) report attempted to seek answers to the following four crucial questions:

1.

Why did NASA continue to launch spacecraft despite many years of known foam debris problems?

2.

Why did NASA managers conclude, despite the concerns of their engineers, that the foam debris strike was not a threat to the safety of the mission?

3.

How could NASA have forgotten the lessons of Challenger?

4.

What should NASA do to minimize the likelihood of such accidents in the future?

Although the CAIB’s comprehensive report raised important questions and offered answers to some of them, it also left many major questions unanswered (Starbuck and Farjoun, 2005).

1.

Why did NASA consistently ignore the recommendations of several review committees that called for changes in safety organization and practices?

2.

Did managerial actions and reorganization efforts that took place after the Challenger disaster contribute, both directly and indirectly, to the Columbia disaster?

3.

Why did NASA’s leadership fail to secure more stable funding and to shield NASA’s operations from external pressures?

By examining, with respect to the Columbia disaster, the case of NASA as an organization, one can try to extract generalizations that could be useful for other organizations, especially those engaged in high-risk activities—such as nuclear power plants, oil and gas, hospitals, airlines, armies, and pharmaceutical companies—and such generic principles may also be salutary for any kind of organization.

The CAIB (2003) report recommended developing a plan to inspect the condition of all RCC systems, the investigation having found the existing inspection techniques to be inadequate. RCC panels are installed on parts of the shuttle, including the wing leading edges and nose cap, to protect against the excessive temperatures of reentry. They also recommended that taking images of each shuttle while in orbit should be standard procedure as well as upgrading the imaging system to provide three angles of view of the shuttle, from liftoff to at least SRB separation. “The existing camera sites suffer from a variety of readiness, obsolescence, and urban encroachment problems.” The board offered this suggestion because NASA had had no images of the Columbia shuttle clear enough to determine the extent of the damage to the wing. They also recommended conducting inspections of the TPS, including tiles and RCC panels, and developing action plans for repairing the system. The report included 29 recommendations, 15 of which the board specified must be completed before the shuttle returned to flight status, and also made 27 “observations” (CAIB, 2005).

Assuming the variable K has been properly declared and initialized, the code segment that will be printed as a result of executing the code segment is:
C. 3 2 1

In the code segment provided, the ArrayList "numbers" contains the elements [0, 2, 4, 5]. The given code iterates through the ArrayList in reverse order and prints the index of each element greater than the variable K.
The explanation of the same is as follows:
1. k starts at numbers.size() - 1, which is 3 (the last index of the ArrayList)
2. It checks if numbers.get(k) > K. If true, it prints the index (k) followed by a space
3. The loop continues in reverse order (k--), checking each element in the ArrayList
4. The loop stops when k is less than 0
In this case, the elements at indices 1, 2, and 3 are greater than K, so the output is "3 2 1 ".

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Answer:

SECTION LEARNING OBJECTIVES

By the end of this section, you will be able to do the following:

Distinguish between static friction and kinetic friction

Solve problems involving inclined planes

Section Key Terms

kinetic friction static friction

Static Friction and Kinetic Friction

Recall from the previous chapter that friction is a force that opposes motion, and is around us all the time. Friction allows us to move, which you have discovered if you have ever tried to walk on ice.

There are different types of friction—kinetic and static. Kinetic friction acts on an object in motion, while static friction acts on an object or system at rest. The maximum static friction is usually greater than the kinetic friction between the objects.

Imagine, for example, trying to slide a heavy crate across a concrete floor. You may push harder and harder on the crate and not move it at all. This means that the static friction responds to what you do—it increases to be equal to and in the opposite direction of your push. But if you finally push hard enough, the crate seems to slip suddenly and starts to move. Once in motion, it is easier to keep it in motion than it was to get it started because the kinetic friction force is less than the static friction force. If you were to add mass to the crate, (for example, by placing a box on top of it) you would need to push even harder to get it started and also to keep it moving. If, on the other hand, you oiled the concrete you would find it easier to get the crate started and keep it going.

Figure 5.33 shows how friction occurs at the interface between two objects. Magnifying these surfaces shows that they are rough on the microscopic level. So when you push to get an object moving (in this case, a crate), you must raise the object until it can skip along with just the tips of the surface hitting, break off the points, or do both. The harder the surfaces are pushed together (such as if another box is placed on the crate), the more force is needed to move them.

In electrical engineering, a group of devices wired in sequence is called a series circuit.

A series circuit is a type of electrical circuit in which the components are connected end to end so that the current flows through each component in turn without any branching.

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Answer:

The golfer is at greater risk.

Explanation:

The golfer is holding a metal club. Metal is a good conductor for electricity (lightning), meaning electrons can pass through easily. Her caddy is at lesser risk because she is holding a plastic handled umbrella. Plastic is an insulator, which does not easily allow the movement of electrons to pass.

Answer:

339.4625

Explanation:

correct me if i am wrong

Answer:

i know this one well hypotheticly what if i where to say it was 0 b

Answer:

A sketch is included to show interior designs using a technique called sectioning.

Explanation:

The essential electrical system must connected to the life safety and critical branches' lighting and appliance-dependent patient care . Within ten seconds, these branches are automatically restored.

The life safety branch, the critical branch, and the equipment branch are the essential systems in a healthcare occupancy. According to the blog, the life safety branch includes the fire alarm system, egress lighting, exit signs, powered doors in the path of egress, and the power needed to safely exit the building.

The essential electrical system must be connected to the life safety and critical branches' lighting and appliance-dependent patient care functions. Within ten seconds, these branches are automatically restored.

According to Biason, the critical branch has requirements that are simpler and leave more room for interpretation.

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