5 (a) A feeder is protected by a relay fed from 2005 current transformers. Determine the Operating time of the relay if • Relay type = earth fault 5 A, 1.3 seconds type IDMTL relay Time Multiplier Setting (TMS) = 1.0 • • Fault current during earth fault = 800 A Plug Setting (PS) = 40% (9 marks) (b) In accordance with the "Code of Practice for the Electricity (Wiring) Regulations", state the highest voltage of direct current (i.e. Vde) between conductors or between a conductor and earth of Extra Low Voltage (ELV). (2 marks) (c) A current transformer is described as 10VA 10P20, 1500/5. Determine: the rated current of the CT at the secondary side; and (i) (ii) the accuracy limiting factor (ALF).

Answer:

approaching a lady or a man

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.

To learn more about pressure
https://brainly.com/question/13717268
#SPJ4

Answer:

B because as a textile engineer, your job is to help design and create fabric, including the equipment and materials needed for fabrication.

Explanation:

111 even numbers greater than 300 can be formed with the digits 1,2,3,4,5 if repetition of digits in a number is not allowed.

D) Identify the problem step comes first in the decision-making process.

In psychology, decision-making (also spelled decision making and decisionmaking) is regarded as the cognitive process resulting in the selection of a belief or a course of action among several possible alternative options. It could be either rational or irrational. The decision-making process is a reasoning process based on assumptions of values, preferences and beliefs of the decision-maker. Every decision-making process produces a final choice, which may or may not prompt action. Research about decision-making is also published under the label problem solving, particularly in European psychological research. Decision-making can be regarded as a problem-solving activity yielding a solution deemed to be optimal, or at least satisfactory. It is therefore a process which can be more or less rational or irrational and can be based on explicit or tacit knowledge and beliefs. Problem solving and critical thinking refers to the ability to use knowledge, facts, and data to effectively solve problems.

To know more about decision-making visit:

https://brainly.com/question/16407152

#SPJ1

Answer:

a) n > 8600 bytes

b) 9500 bytes

c) The results calculated above a very sensitive to the ratio of the packet size to the packet header

d) the model is accurate because N > 9500 bytes

Explanation:

A) The filesize n B

no of bytes transferred = no of packets * packet size

                                      = ( n / 1000 ) * 1024

circuit switching

number of bytes transferred = file size + two packets

                                               = n + (2 * 1024)

comparing both equations

= n + (2048)  <  ( n/1000) * 1024

=  24 * n / 1000 > 2048

hence: n > 8600 bytes

B )  The filesize n B is the total latency incurred before the entire file arrives at the destination less for circuits than for packets

packet switching :

Latency = ( n/1000 ) * ( 1024 * 8 bits/4 Mbps ) + 3 * ( 1024 * 8 bits / 4 Mbps) s + (3 * 1 ms + 4 * 2 ms)

=  ( n * 2 * 1026 / 10^6 )ms + 6.144 + 11

Circuit switching

Latency = ( n * 8 bits/ 4 Mbps ) s + 4 * 2 ms + 2 * ( 4 * 1024 * 8/4 mbps + 3 * 1 ms + 4 * 2 ms )

= n * 2*10 n3 / 10^6 ms + 8 + 2 * ( 19.1920 )

= 2n / 10 n3 + 38.3840

therefore for n to meet the requirement

( n * 2 * 1024 / 10 n6 ) ms + 17.144 > 2n / 10 n3 + 38.384

hence N > 9500 BYTES

C ) The results calculated above a very sensitive to the ratio of the packet size to the packet header

D) The model is accurate because N > 9500 bytes

and It doesn't ignore any important considerations

Answer:

B.

Explanation:

I think not sure hehe

Answer:

What are the principal benefits of developing a comprehensive project scope analysis?

The principal benefits of developing a comprehensive project scope analysis include better understanding of project objectives , clarifying the tasks that need to be completed, assigning tasks to team members, and estimating the time, labor, and money necessary for successful completion of the project. Additionally, a project scope analysis helps to set groundwork , goals, and objectives, and allows a company to guide the dream of a project to a successful completion . A comprehensive project scope analysis also ensures that all stakeholders have a clear understanding of the project and helps to prevent any misunderstandings or disagreements that can arise during the course of the project

Explanation:

Answer:

This is an example of the conduction of electricity through metal. Free moving electrons on the car will conduct a electric field when a voltage is applied to the car;  in this case the transmission line, and would flow through the metal to the door handle causing electrocution.

Answer:

you have to think then go scratch and then calculate and the design  

Explanation:

The statistical analysis of a dataset inform a design process.

Statistical analysis is a kind of tool which helps collect and analyze large amounts of data. This is helpful to identify common patterns of dataset and make trends to convert them into meaningful information.

Designers do make use of statistical analysis of dataset in design process.

Analysis is a key part of design process.  Without analysis, nothing can be done in designing process.

Learn more about statistical analysis

https://brainly.com/question/14724376

#SPJ2

how am I going to do this, I have a friend that might be able to help I will check

Answer:

Java Code was used to define classes in the abstract discount policy,The bulk discount, The buy items get one free and the combined discount

Explanation:

Solution

Code:

Main.java

public class Main {

public static void main(String[] args) {

  BulkDiscount bd=new BulkDiscount(10,5);

BuyNItemsGetOneFree bnd=new BuyNItemsGetOneFree(5);

CombinedDiscount cd=new CombinedDiscount(bd,bnd);

System.out.println("Bulk Discount :"+bd.computeDiscount(20, 20));

  System.out.println("Nth item discount :"+bnd.computeDiscount(20, 20));

 System.out.println("Combined discount :"+cd.computeDiscount(20, 20));    

  }

}

discountPolicy.java

public abstract class DiscountPolicy

{    

public abstract double computeDiscount(int count, double itemCost);

}    

BulkDiscount.java  

public class BulkDiscount extends DiscountPolicy

{    

private double percent;

private double minimum;

public BulkDiscount(int minimum, double percent)

{

this.minimum = minimum;

this.percent = percent;

}

at Override

public double computeDiscount(int count, double itemCost)

{

if (count >= minimum)

{

return (percent/100)*(count*itemCost); //discount is total price * percentage discount

}

return 0;

}

}

BuyNItemsGetOneFree.java

public class BuyNItemsGetOneFree extends DiscountPolicy

{

private int itemNumberForFree;

public BuyNItemsGetOneFree(int n)

{

  itemNumberForFree = n;

}

at Override

public double computeDiscount(int count, double itemCost)

{

if(count > itemNumberForFree)

return (count/itemNumberForFree)*itemCost;

else

  return 0;

}

}

CombinedDiscount.java

public class CombinedDiscount extends DiscountPolicy

{

private DiscountPolicy first, second;

public CombinedDiscount(DiscountPolicy firstDiscount, DiscountPolicy secondDiscount)

{

first = firstDiscount;

second = secondDiscount;

}

at Override

public double computeDiscount(int count, double itemCost)

{

double firstDiscount=first.computeDiscount(count, itemCost);

double secondDiscount=second.computeDiscount(count, itemCost);

if(firstDiscount>secondDiscount){

  return firstDiscount;

}else{

  return secondDiscount;

}

}  

}

Answer:

What do u need it for just gaming or for streaming and other things

Electron spin resonance (ESR) dating can be used on certain types of materials, specifically those containing crystalline structures with unpaired electrons. This dating method is commonly applied to materials such as tooth enamel, mollusk shells, and quartz grains, among others. These materials contain trapped charges resulting from natural radiation exposure, which can be measured using ESR techniques.

ESR dating is particularly useful for dating geological and archaeological samples that range in age from a few thousand years to millions of years. It can provide valuable insights into the age and history of the materials, allowing scientists to understand past environments, human evolution, and geological processes.

It's important to note that ESR dating is not applicable to all types of materials and has its limitations. The suitability of a material for ESR dating depends on its composition, preservation, and the availability of suitable paramagnetic centers for analysis.

learn more about "archaeological ":- https://brainly.com/question/575997

#SPJ11

At a given temperature and injection composition, if researchers allowed each engine to carry out only one complete combustion reaction, Diesel engine would produce more water.So option a is correct.

A steam engine operates by boiling water to produce steam, which is then used to generate mechanical work. In this process, the water is heated to its boiling point, and upon vaporization, it expands significantly. When the steam is condensed back into water after performing work, a large amount of water is produced.

On the other hand, diesel and gasoline engines combust a mixture of fuel and air to produce energy. While water is one of the byproducts of combustion in these engines, the amount of water produced is relatively small compared to a steam engine.

Electric engines, such as electric motors, convert electrical energy into mechanical energy and do not produce water as a direct byproduct of their operation.

The steam engine would produce more water compared to the other engines listed in the given scenario.Therefore option a is correct.

To learn more about  steam engine  visit: https://brainly.com/question/28431818

#SPJ11

Answer:

Scheduling is a process of create a structure that shows the way a schedule is organized before developing a complete and final schedule of a project.

Explanation:

This is the initial step in of developing a project schedule for a capital cost project. At this stage, the estimates for the project are done involving the various actions in the project. A lot of details are included in this  schedule showing the activities that are to be performed and the constraints involved.

Answer:

Aerobic biological treatment process

Explanation:

Aerobic biological treatment process in which micro-organisms, in the presence of oxygen, metabolize organic waste matter in the water, thereby producing more micro-organisms and inorganic waste matter like CO₂, NH₃ and H₂O.

The IRR for the investment is 15.56%.

To calculate the Net Present Value (NPV) for the investment, we need to determine the cash flows associated with the investment over its lifetime and discount them to present value. Here's the step-by-step calculation:

Calculate the annual revenue from the solar panels:

Annual revenue = Production per year (2250 full load hours/year) * Price per kWh (0.38 $/kWh) * Number of solar panels (10)

Annual revenue = 2250 * 0.38 * 10 = $8550

Calculate the annual maintenance cost:

Annual maintenance cost = Maintenance cost per MWh (80 $/MWh) * Production per year (2250 full load hours/year) / 1000

Annual maintenance cost = 80 * 2250 / 1000 = $180

Calculate the annual cash flow:

Annual cash flow = Annual revenue - Annual maintenance cost

Annual cash flow = $8550 - $180 = $8370

Determine the discount factor for each year:

Discount factor = 1 / (1 + Discount rate)^Year

Discount factor = 1 / (1 + 0.04)^Year

Calculate the discounted cash flow for each year:

Discounted cash flow = Annual cash flow * Discount factor

Sum up the discounted cash flows over the 20-year lifetime to calculate the NPV:

NPV = Sum of discounted cash flows - Initial investment cost

Learn more about investment here :-

https://brainly.com/question/15105766

#SPJ11

A circuit that is filled almost to its capacity and thus is the critical point that determines whether users get good or bad response times is referred to as a congested circuit.

A congested circuit refers to a situation where the network is experiencing congestion as a result of an overuse of the network. This can happen at any point in the network, including the router, hub, or other network equipment. When a circuit is filled almost to its capacity and thus is the critical point that determines whether users get good or bad response times, it is said to be a congested circuit.

In computer networks, congestion occurs when too many users try to use the same network resources simultaneously. When a network becomes congested, data packets start to get delayed or even lost, which can result in a slow network and poor application performance. When a circuit is congested, the response time of users is also slow as they experience delays in their network activities.A solution to this problem can be to add more capacity to the network or to manage network traffic so that it doesn't exceed the capacity of the network. Another solution is to prioritize network traffic so that critical applications get priority over non-critical applications.

Learn more about circuit here: https://brainly.com/question/2969220

#SPJ11

Answer:

speed, force

Explanation:

A mechanism is a device that transmits movements so that the output movement is different than the input movement. It can be used to change the direction, speed, force, or type of movement.

In engineering, mechanisms transmit motion along with force. Components that can make up a mechanism can include, but is not limited to gears, chain and sprockets, cams and their followers etc.

It's important to note that this speed difference is only noticeable for large programs. For small programs, the difference is negligible.

1. Shortcut operators are faster than the conventional arithmetic operators: This statement is true. Shortcut operators are faster because they combine arithmetic operations with variable assignments in a single statement. For example, instead of writing "a = a + 2", you can write "a += 2". This saves time and reduces the amount of code you need to write. However, it's important to note that this speed difference is only noticeable for large programs or when dealing with complex calculations. For small programs, the difference is negligible.
2. You can declare more than one variable in a single line: This statement is also true. In many programming languages, you can declare and initialize multiple variables on the same line. For example, instead of writing "int a; int b; int c;", you can write "int a, b, c;". This saves space and makes your code more concise. However, it's important to note that you should only do this if the variables are related and have the same data type.
3. You must use else after every if statement: This statement is false. It's not necessary to use else after every if statement. You can use if statements on their own if you don't need to execute any code if the condition is not true. However, if you need to execute code in both cases (true and false), then you should use else. It's also important to note that you can use else if to test for additional conditions if the first if statement is not true.

Learn more about programs :

https://brainly.com/question/14368396

#SPJ11

Answer:

To determine the differential height of water between the two sections of the pipe, we need to consider the conservation of energy and the ideal gas law.Conservation of energy:

The first law of thermodynamics states that the increase in internal energy of a system is equal to the heat added to the system, minus the work done by the system. In this case, the internal energy of the air flowing through the pipe increases as it is compressed in the neck of the pipe, causing its temperature to increase.The increase in internal energy can be expressed as:ΔU = Q - Wwhere ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system.Ideal gas law:

The ideal gas law states that the pressure of an ideal gas is directly proportional to its temperature and inversely proportional to its volume. This can be expressed as:PV = nRTwhere P is the pressure, V is the volume, n is the number of moles of gas, R is the universal gas constant, and T is the temperature.Solution:

To determine the differential height of water between the two sections of the pipe, we need to use the conservation of energy and the ideal gas law to relate the pressure difference between the two sections to the temperature difference and the flow rate of the air.First, let's convert the flow rate of the air from liters per second to cubic meters per second:200 L/s = 0.2 m3/sNext, we can use the ideal gas law to express the pressure difference between the two sections in terms of the temperature difference and the flow rate:ΔP = (nRT1 - nRT2)/V = (1.20 kg/m3 * 8.31 J/(molK) * 298 K - 1.19 kg/m3 * 8.31 J/(molK) * 303 K)/(0.2 m3/s)ΔP = -27.7 PaFinally, we can use the conservation of energy to express the differential height of water in terms of the pressure difference and the flow rate:Δh = ΔP/ρg = (-27.7 Pa)/(1000 kg/m3 * 9.81 m/s2) = -0.28 mTherefore, the differential height of water between the two sections of the pipe is -0.28 m.Note that the negative sign indicates that the pressure is lower in the second section of the pipe, which is consistent with the fact that the temperature is higher and the volume is lower in this section.

Explanation:

Answer:

True. needa type in 20 more letters

Explanation:

ye.

Answer:

True

Explanation:

Answer:

64640.92 psi

Explanation:

True stress ( psi )       True strain

49300                          0.11

61300                           0.21

Determine the true stress necessary to produce a true plastic strain of 0.25

бT1 = 49300

бT2 = 61300

бT3 = ?

∈T1 = 0.11

∈T2 = 0.21

∈T3  = 0.25

note : бTi = k ∈Ti^h

∴ 49300 = k ( 0.11 )^h ----- ( 1 )

   61300 = k ( 0.21)^h ------ ( 2 )

solving equations 1 and 2 simultaneously

49300/61300 = ( 0.11 / 0.21 )^h

0.804 = (0.52 )^h

next step : apply logarithm

log  ( 0.804 ) = log(0.52)^h

h = log 0.804 /  log (0.52)

  =  0.33

back to equation 1

49300 = k ( 0.11 )^0.33

k = 49300 / (0.11)^0.33

 = 102138

therefore бT3 = K (0.25)^h

                        = 102138 ( 0.25 )^ 0.33  

                         = 64640.92

The correct answer is According to the EPA (Environmental Protection Agency) regulations, if the recovery equipment was manufactured before November 15, 1993, the low pressure chiller must be evacuated to 1 mm Hg absolute pressure or lower before making a major repair.

This is to ensure that all the refrigerant has been removed from the system before any repair work is done to prevent it from escaping into the atmosphere. For recovery equipment manufactured after November 15, 1993, the required evacuation level is 10 mm Hg absolute pressure or lower.I suggest referring to the manufacturer's documentation or relevant industry standards for detailed instructions on the evacuation process and recommended vacuum levels for maintenance and repair. It is important to follow appropriate safety procedures and guidelines to ensure proper maintenance and prevent accidents.

To learn more about pressure click the link below:

brainly.com/question/10035018

#SPJ11

Answer:

C. 14.55

Explanation:

12 x 10 = 120

120 divded by 10 is 12

so now we do the left side

7 x 3 = 21 divded by 10 is 2

so now we have 14

and the remaning area is 0.55

so 14.55