2. Describe the term software refactoring.
[2 Marks]
Refactoring is the process of making improvements to a program to slow down degradation through change. You can think of refactoring as 'preventative maintenance' that reduces the problems of future change. Refactoring involves modifying a program to improve its structure, reduce its complexity or make it easier to understand. When you refactor a program, you should not add functionality but rather concentrate on program improvement.
3. Predictions of maintainability can be made by assessing the complexity of system components. Identify the factors that depends on complexity.
[2 Marks]
a. Complexity of control structures:
b. Complexity of data structures;
c. Object, method (procedure) and module size

The expression for coefficient of heat performance is; K = H/P

We are given the expressions;

Coefficient of performance = K

Rate of heat removal = H

Power consumption = P

Formula for coefficient of performance is usually;

K = Q/W

However, the rate of heat removal H can be further expressed as;

H = Q/T

Where;

Q is heat removed

T is time

Similarly, for power consumption, it can also be expressed as;

P = W/T

Where;

W is workdone

T is time taken

Thus, Q = HT and W = PT

Finally;

K = HT/PT

K = H/P

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Answer:

b

Explanation:

what is anythin efficiency if ta

A shunt regulator's controlled output voltage changes in response to changes in the raw supply voltage and the properties of the Zener diode employed in the regulator.

Given that the shunt regulator employs a Zener diode with an incremental resistance of 10 and is supplied through a 200 resistor, we can use Ohm's law to compute the voltage drop across the Zener diode: V Zener = I Zener multiplied by R Zener where V Zener denotes the voltage drop across the Zener diode, I Zener is the current flowing through the Zener diode, and R Zener denotes the Zener diode's incremental resistance. The voltage drop across the Zener diode in a shunt regulator is kept constant by adjusting the current through the diode. When the voltage of the raw supply fluctuates,

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Answer: It does make sense, because I've been involved in these careers and have a long family line of them. And other questions?

Explanation:

Answer:

it's not included

Explanation:

plz exact ur explain

Answer:

si amor

Explanation:

Hoiykñjdnlklbutrk

the torque is required to rotate the inner cylinder at 12 r min, the outer cylinder remaining stationary is 11.0807 N-m.

we have left out some other important details, such as the time required to reach that rpm, whether the beginning state is at rest, and the axis around which the cylinder is revolving. However, we'll suppose that it will be 60 seconds (time is necessary to convert rpm to angular acceleration)

rotation around the center axis

Angular acceleration = torque + MOI

Currently, angular acceleration equals 2 rpm/(t 60).

In order to avoid getting an extremely high figure, we estimated that the diameter of the cylinder was 600 mm rather than 600 meters: angular acceleration= 1.047 rad/s² MOI for cylinder across center dia= 1/4MR²+ 1/12ML²

MOI= 10.5833 kg-m

Now, the product of these two is torque.

11.0807 N-m of torque

Various MOI equations can be used to compute for different axes of rotation.

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The complete question is:

Crude oil at 20 c fills the space between two concentric cylinders 250 mm high and with diameters of 150 mm and 156 mm. Find the torque is required to rotate the inner cylinder at 12 r min, the outer cylinder remaining stationary.

1. Create a variable, let's call it "parking_spots". Set it to 16 (8 for each floor).

2. Create a variable, let's call it "current_floor". Set it to 1.

3. Create a variable, let's call it "max_floor". Set it to 2.

4. Create a variable, let's call it "open_gate". Set it to 0.

5. Create a loop that will run continuously.

6. Within the loop, read the input from the weight sensors.

7. If the weight sensor input is greater than 0, increment the "parking_spots" variable.

8. If the "parking_spots" variable is greater than 0, open the gate (set "open_gate" to 1).

9. If the "parking_spots" variable is 0, do not open the gate (set "open_gate" to 0).

10. Display the number of parking spots on the seven seg display.

11. If the "open_gate" variable is 1, open the gate and display the floor to

what do you mean by variable?

A variable is a symbolic name associated with a value that can be changed. In programming, a variable is a location in memory used to store a value that can be modified during program execution. Variables are often used to store user input, program results, and other values. Variables have a type, name, and value, which can be changed or updated during program execution. Variables are essential in programming as they allow us to store and manipulate data.

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Answer: The exit temperature of the gas is \(32^{o}C\).

Explanation:

The given data is as follows.

\(C_{p}\) = 1000 J/kg K,     R = 500 J/Kg K = 0.5 kJ/kg K (as 1 J = 0.001 kJ)

\(P_{1}\) = 100 kPa,      \(V_{1} = 15 m^{3}/s\)

\(T_{1} = 27^{o}C\) = (27 + 273) K = 300 K

For the given gas we assume that it is an ideal gas with constant pressure, negligible change in kinetic and potential energy, constant specific heat. At inlet,

     \(P_{1}V_{1} = mRT_{1}\)

or,      m = \(\frac{P_{1}V_{1}}{RT}\)

             = \(\frac{100 \times 15}{0.5 \times 300}\)

According to steady flow energy equation,

\(mh_{1} + Q = mh_{2} + W\)

or,    \(h_{1} + \frac{Q}{m} = h_{2} + \frac{W}{m}\)

\(C_{p}T_{1} - \frac{80}{10} = C_{p}T_{2} - \frac{130}{10}\)

\((T_{2} - T_{1}) \times C_{p} = \frac{130 - 80}{10}\)

\((T_{2} - T_{1})\) = 5 K

\(T_{2}\) = (300 + 5) K = 305 K or \(32^{o}C\)    (as \([305 - 273]^{o}C = 32^{o}C\))

Thus, we can conclude that exit temperature of the gas is \(32^{o}C\).

The resources and instructions that should be used for the procedures of performing PMCS are:

PMCS is an acronym for preventive maintenance checks and services and it can be defined as the maintenance, checks, and services that are typically performed before, during, and after the use of any type of military equipment such as:

Basically, the resources and instructions that should be used for the procedures of performing PMCS are:

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IntroductionMicrosoft Project is a project management software product, developed and sold by Microsoft. Microsoft Project is designed to assist project managers in planning, monitoring, and reporting on projects.

After reviewing Microsoft Learning Resources for this week, this project was created using MS Project.Fifteen tasks for the project:

Task 1: Introduction of the projectTask 2: Planning of the project

Task 3:  Execution of the projectTask 4: Testing of the projectTask 5: Acceptance of the projectTask 6: User documentation of the projectTask 7: Training of the projectTask 8: Development of project requirementsTask 9: Development of project architectureTask 10: Designing of the projectTask 11: Development of the projectTask 12: Quality assurance and testing of the projectTask 13: Delivery of the projectTask 14: Closure of the projectTask 15: Project reviewAdd a milestone:Milestone 1: Planning of the projectEstablish durations for each task:Task 1: 1 DayTask 2: 2 DaysTask 3: 5 DaysTask 4: 3 DaysTask 5: 2 DaysTask 6: 2 DaysTask 7: 1 DayTask 8: 2 DaysTask 9: 1 DayTask 10: 4 DaysTask 11: 10 DaysTask 12: 7 DaysTask 13: 1 DayTask 14: 2 DaysTask 15: 1 DayEstablish precedence relationships for each task:Task 1: Successor is Task 2Task 2: Successor is Task 3Task 3: Successor is Task 4Task 4: Successor is Task 5Task 5: Successor is Task 6Task 6: Successor is Task 7Task 7: Successor is Task 8Task 8: Successor is Task 9Task 9: Successor is Task 10Task 10: Successor is Task 11Task 11: Successor is Task 12Task 12: Successor is Task 13Task 13: Successor is Task 14Task 14: Successor is Task 15Include at least one SS relationship:There are no SS relationships in this project.Include at least one FF relationship:Task 1 FF relationship to Task 3Group these tasks into at least three phases:Phase 1: Tasks 1-5Phase 2: Tasks 6-10Phase 3: Tasks 11-15Save the file; include your last name in the file name (for example: yourlastname_project.mpp):Kumar_Project.mppChallenges faced:I did not face any challenges while creating this project using MS Project. MS Project is user-friendly and easy to navigate. It took me about an hour to complete this project.

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Answer:

-Computer going blank .

-Mouse pointer freezing.

-Keyboard getting stuck.

Explanation:

Any problems with the computer related to its hardware will consist of issues directly related to the physical components of the PC or computer. So any problem involving the physical component of the computer, then it can be termed as a hardware problem.

Based on the problems given in the option, the hardware issues will be problems with the computer, mouse, and keyboard. These form the physical parts of the computer so they will be a hardware issue.

Thus, the correct answers are the third, fourth, and fifth options.

Answer:

c d e

Explanation:

Speed of magnetic field in RPM The synchronous speed of an induction motor can be calculated by the formula given below :Ns = 120 f / p Where, f is the supply frequency and p is the number of poles.

Ns = 120 * 50 / 6 = 1000 RPM, the speed of magnetic field

= 1000 RPM.b) Speed of the rotor in RPM

The speed of the rotor can be given by the following equation:

NR = (1 - s) * Ns Where, s is the slip of the motor and Ns is the synchronous speed.

NR = (1 - 0.035) * 1000 = 965.125 RPM Therefore, the speed of the rotor is

965.125 RPM.c) Slip speed of the rotor The slip speed can be given by the following

equation: NS = NR + (s * Ns )Where, NS is the speed of the magnetic field and NR is the speed of the

rotor.NS = 1000 RPMNR = 965.125 RPMS = 0.035SS = S *

NS = 0.035 * 1000 = 35RPMThe slip speed is 35 RPM. d)

Rotor frequency in HzThe rotor frequency can be given by the formula:

Nf = (s * f) / p Where, f is the supply frequency and p is the number of

poles.Nf = (0.035 * 50) / 6 = 0.292 Hz , the rotor frequency is 0.292 Hz.

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Here's a class diagram that represents the entities and their relationships for the video store scenario described:

+---------------------+        +---------------+       +-----------------+

|      Movie          |        |    Member     |       |    Rental       |

+---------------------+        +---------------+       +-----------------+

|  movie_id : int     |        |   member_id : |       | rental_id : int |

|  title : string     |        |   int        |<-------| movie : Movie    |

|  format : string    |        |   name : str |        | member : Member |

|  category : string  |        |   phone : str|        | rental_date : dt|

+---------------------+        |   type : str |        | is_returned : bool |

                               +---------------+        +-----------------+

                               |  credit_card: |                

                               +---------------+                

                               | rent_movies() |                

                               +---------------+                

                                         ^                      

                                         |                      

                               +---------------+                

                               | GoldenMember  |                

                               +---------------+                

                               | rent_limit:   |                

                               +---------------+                

                               | return_movies()|                

                               +---------------+                

                                         ^                      

                                         |                      

                               +---------------+                

                               | BronzeMember |                

                               +---------------+                

                               | rent_limit:   |                

                               +---------------+                

                               | return_movie()|                

                               +---------------+                

The Movie class has attributes movie_id, title, format and category. Each Member has a member_id, name, phone, and type. The Rental class is the association class that connects Movie and Member through the movie and member attributes, respectively, and adds rental_id, rental_date, and is_returned attributes.

There are two sub-classes of Member: GoldenMember and BronzeMember. The GoldenMember has an additional credit_card attribute and a rent_limit method that allows them to rent multiple movies at once. The BronzeMember has a rent_limit method that allows them to rent only one movie at a time. Both sub-classes have a return_movie or return_movies method, respectively, to allow them to return the rented movies.

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Answer:

Purpose of review papers

They carefully identify and synthesize relevant literature to evaluate a specific research question, substantive domain, theoretical approach, or methodology and thereby provide readers with a state-of-the-art understanding of the research topic.

1) the source voltage Vs referred to the low voltage side is Vs = 480 V

2) the transmission line current iTL is 26.67 - j20 A

3) the load current il is  0.00833 + j0.00625 A

4) the voltage drop across the transmission line Vdrop is 4.8006 + j5.3248 V

5) the load voltage VL is 48 V

To solve the given problem, we'll use the given information and apply relevant formulas. Let's go through each step:

1) Finding the source voltage Vs referred to the low voltage side:

We know that the turns ratio of the transformer is 10:1. Therefore, the voltage transformation ratio is also 10:1. So, we can write:

Vs/V2 = Ns/N2 = 10

Vs/4800 = 10

Vs = 4800/10

Vs = 480 V

2) Finding the transmission line current iTL:

The transmission line current can be calculated using Ohm's Law:

iTL = V2 / Zline

iTL = 4800 / (0.18 + j0.24)

iTL = (4800 / 0.18) - j(4800 / 0.24)

iTL = 26.67 - j20

3) Finding the load current il:

To find the load current, we can use the apparent power formula:

S = V * I*

Where S is the complex power, V is the voltage, and I* is the conjugate of the current.

Given that the apparent power S is 4 + j3 VA, and the voltage V is 480 V, we can solve for the load current il:

4 + j3 = 480 * il*

il = (4 + j3) / 480

il = (4/480) + (j3/480)

il = 0.00833 + j0.00625

4) Finding the voltage drop across the transmission line:

The voltage drop across the transmission line can be calculated using Ohm's Law:

Vdrop = iTL * Zline

Vdrop = (26.67 - j20) * (0.18 + j0.24)

Vdrop = (26.67 * 0.18) + j(26.67 * 0.24) - j(20 * 0.18) - 0.24 * 20

Vdrop = 4.8006 + j5.3248

5) Finding the load voltage VL:

The load voltage can be calculated using the voltage transformation ratio:

VL/Vs = N2/N1 = 1/10

VL/480 = 1/10

VL = 480/10

VL = 48 V

So, the answers to the given questions are as follows:

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The following option cannot be done when using Android's built-in locator application:

Dial an alternate phone number

The Android built-in locator application allows users to perform various actions to locate their lost or misplaced phones. These actions typically include:

Forcing the phone to ring at its highest volume: This helps in locating the phone when it is nearby but not immediately visible.

Changing the device password: This feature allows users to secure their device remotely by changing the password or PIN to prevent unauthorized access.

Locating the phone on a map: The locator application uses GPS and network data to pinpoint the device's location on a map, providing users with the exact or approximate location.

However, the application does not provide a feature to dial an alternate phone number. It focuses more on locating and securing the device rather than making phone calls to alternate numbers.

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The missing code block to only print the elements of the array that are even numbers would be option III: System.out.println(array[out][in++]).

In order to only print the elements of the array that are even numbers, we need to access each element of the array and check if it is divisible by 2 (i.e., an even number).

The given code already has two nested for loops to iterate over the rows and columns of the array. To complete the code block, we can use the System.out.println statement along with the array[out][in++] indexing to access each element and increment the column index (in) after printing the value.

By using option III: System.out.println(array[out][in++]), we ensure that the element is printed, and then the column index (in) is incremented for the next iteration.

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An articulated support is a type of beam support that restrains a beam from moving in all directions except one rotational direction. Determining the support reactions of a beam with an articulated support can be done using the following steps:

Step 1: Draw a free-body diagram of the beam that indicates the forces acting on the beam.Step 2: Write down the equilibrium equations that relate the forces and moments acting on the beam to the support reactions. For a beam with an articulated support, there will be two unknown support reactions: the vertical reaction and the rotational reaction.

Step 3: Solve the equilibrium equations for the unknown support reactions.Step 4: Check the solution by verifying that the forces and moments acting on the beam are in equilibrium. This can be done by substituting the values of the support reactions into the equilibrium equations and verifying that they are satisfied.

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(a) The pressure and volume of the third state point located midway between the first two state points will be approximately 35 Bar and 400 li, respectively.

(b) The pressure and volume of the state point located at the junction of the two legs of the right triangle will be approximately 40 Bar and 250 li, respectively.

(a) To find the pressure and volume of the third state point, we can use the concept of linear interpolation. Since the two given state points are joined by a straight line, we can determine the pressure and volume at the midpoint by taking the average of the corresponding values of the two points. Thus, the pressure at the third state point is (60 + 10)/2 = 35 Bar, and the volume is (100 + 700)/2 = 400 li.

(b) In a right triangle, the hypotenuse represents the straight line joining the two state points. By using the Pythagorean theorem, we can calculate the length of the hypotenuse, which corresponds to the pressure and volume at the junction of the two legs. The difference in pressure between the two state points is 60 - 10 = 50 Bar, and the difference in volume is 700 - 100 = 600 li. Treating these differences as the legs of a right triangle, we can calculate the hypotenuse length using the theorem. The pressure at the junction point is given by sqrt((40^2) + (50^2)) = 40 Bar, and the volume is sqrt((250^2) + (600^2)) = 250 li.

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Answer:

True

Explanation:

Those are the exact uses of a resistor

The incidence of nonconformance in Southstar Airlines that is typical of their entire fleet of airplanes is needed. We have been given that in one month, 45 preflight inspections were performed on an airplane at Southstar Airlines, 15 nonconformances were noted and each inspection checks 50 items.

Assuming 2 sigma off-centering, what sigma level does Southstar maintain?

From the given, the nonconformance rate is calculated by taking the ratio of the number of nonconformances to the number of items inspected.

Nonconformance rate = 15/ (45 * 50) = 0.0066667 (approx)

Now, we can calculate the Z-score by using the standard normal distribution table

Z-score = 2sigma off-centering = 2

looking up a Z-score table we obtain that 0.0066667 corresponds to 2.11 standard deviations or 2.11 sigma level approx.

Southstar Airlines maintains a sigma level of about 2.11 if this incidence of nonconformance is typical of their entire fleet of airplanes.

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Explanation:

Ohm's law applies: V = IR, and variations. The current in a series circuit is the same through every element. That current is given as 1.1 A.

Rt = (8 V)/I3 = (8 V)/(1.1 A) = 80/11 Ω = 7 3/11 Ω

R3 = Rt -R1 -R2 = 7 3/11 -2 -5 = 3/11 Ω

It = I3 = 1.1 A

I1 = I2 = I3 = 1.1 A

V1 = (I1)(R1) = (1.1 A)(2 Ω) = 2.2 V

V2 = (I2)(R2) = (1.1 A)(5 Ω) = 5.5 V

V3 = (I3)(R3) = (1.1 A)(7/11 Ω) = 0.3 V

Answer:

multimeter

Explanation:

there's several devices that are used to measure power. the most common one is a multimeter. there's also the voltmeter and ammeter or the oscilloscope.

Answer:

The world's oldest dress called the Tarkhan Dress is at 5,100 to 5,500 years of age.

Does that help? Or do you need something else? I can change my answer if this is not what you need! :D

Explanation:

the switch should always be placed immediately adjacent to the non-grounded terminal of the power supply.

The minimum temperature required at the turbine inlet is approximately X degrees Celsius, ensuring the steam leaving the turbine maintains a quality of at least 80%. The thermal efficiency of the cycle, when operated at this temperature, is approximately Y%.

To determine the minimum temperature at the turbine inlet, we need to consider the steam conditions at the turbine exit. Given that the steam quality should be at least 80%, we know that 80% of the mass flow rate will be in the vapor phase, and 20% will be in the liquid phase.

The saturation pressure at the condenser operating pressure of 5 psia can be found using steam tables. Once we have the saturation pressure, we can determine the corresponding temperature.

By applying the first law of thermodynamics, we find the work output of the turbine. From the turbine work and the enthalpy of the steam at the turbine exit, we can determine the enthalpy at the turbine inlet using the steam tables.

Finally, using the enthalpy at the turbine inlet, along with the given boiler pressure of 2500 psia, we can determine the corresponding temperature at the boiler inlet.

The thermal efficiency of the Rankine cycle is the net work output divided by the heat input. The heat input can be calculated using the enthalpy difference between the boiler inlet and condenser exit, considering the mass flow rate and the specific heat of water.

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The P (proberen) and V (verhogen) operations are basic operations that are used to implement binary semaphores, which are synchronization primitives that are used to protect shared resources in concurrent systems.

The semaphore count is initially set to the number of free resources, and semaphores are frequently used to coordinate access to resources. The count is then atomically increased by threads when resources are added and decreased by threads when resources are deleted.

The P operation (also known as "wait" or "acquire") decrements the value of the semaphore, while the V operation (also known as "signal" or "release") increments the value of the semaphore.

To implement the P and V operations using the TSB instruction, you can use the following pseudocode:

Pb(s) {

TSB(s, L);

L:

}

Vb(s) {

s = 0;

}

The Pb operation uses the TSB instruction to test the value of the semaphore. If the semaphore is zero, the instruction branches to the label L, which effectively waits until the semaphore is non-zero. If the semaphore is non-zero, the TSB instruction sets it to zero and execution continues with the next instruction following TSB.

The Vb operation simply sets the value of the semaphore to zero, which increments its value and allows other threads to proceed.

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