You are responsible for designing the control system for a vertical, passenger elevator that has to serve 8 floors. Propose and explain possible design criteria that you could implement for this system.

Answer:

24 i believe

Explanation:

A multispeed capacitor-run motor changes speed by adding impedance to the run winding and increasing the slip, not by changing the number of poles.

A capacitor-run motor is a type of single-phase induction motor that uses a capacitor to create a phase shift between the run winding and the start winding. This phase shift causes the motor to start rotating in the desired direction.

The run winding is the main winding of the motor. It is responsible for providing the torque that keeps the motor running. The impedance of the run winding can be increased by adding a resistor or inductor in series with it. This increases the slip, which is the difference between the synchronous speed of the motor and the actual speed of the motor.

The slip is a measure of how much the rotor is lagging behind the rotating magnetic field. As the slip increases, the torque of the motor decreases. This allows the motor to run at different speeds.

The number of poles in a motor determines its synchronous speed. The synchronous speed is the speed at which the rotating magnetic field rotates. The number of poles can be changed by changing the physical configuration of the motor. However, this is not typically done in multispeed capacitor-run motors.

Additional Information

Multispeed capacitor-run motors are typically used in appliances such as fans and air conditioners. They are a good choice for these applications because they are relatively inexpensive and easy to maintain.

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This question is incomplete, the complete question is;

Given the complex numbers A₁ = 6∠30 and A₂ = 4 + j5;

(a) convert A₁ to rectangular form

(b) convert A₂ to polar and exponential form

(c) calculate A₃ = (A₁ + A₂), giving your answer in polar form

(d) calculate A₄ = A₁A₂, giving your answer in rectangular form

(e) calculate A₅ = A₁/(\(A^{*}\)₂), giving your answer in exponential form.

Answer:

a) A₁ in rectangular form is 5.196 + j3

b) value of A₃  in polar form is 12.19∠41.02°

The polar form of A₂ is 6.403 ∠51.34°, exponential form of A₂ = 6.403\(e^{j51.34 }\)

c) value of A₃  in polar form is 12.19∠41.02°

d) A₄ in rectangular form is 5.784 + j37.98

e) A₅ in exponential form is 0.937\(e^{j81.34 }\)

Explanation:

Given data in the question;

a) A₁ = 6∠30

we convert A₁ to rectangular form

so

A₁ = 6(cos30° + jsin30°)

= 6cos30° + j6cos30°

= (6 × 0.866) + ( j × 6 × 0.5)

A₁  =  5.196 + j3

Therefore, A₁ in rectangular form is 5.196 + j3

b) A₂ = 4 + j5

we convert to polar and exponential form;

first we convert to polar form

A₂ = √((4)² + (5)²) ∠tan⁻¹( \(\frac{5}{4}\) )

= √(16 + 25) ∠tan⁻¹( 1.25 )

= √41 ∠ 51.34°

A₂ = 6.403 ∠51.34°

The polar form of A₂ is 6.403 ∠51.34°

next we convert to exponential form;

A∠β can be written as A\(e^{j\beta }\)

so, A₂  in exponential form will be;

A₂ = 6.403\(e^{j51.34 }\)

exponential form of A₂ = 6.403\(e^{j51.34 }\)

c) A₃ = (A₁ + A₂)

giving your answer in polar form

so, A₁ = 6∠30 = 5.196 + j3 and A₂ = 4 + j5

we substitute

A₃ = (5.196 + j3) + ( 4 + j5)

= 9.196 + J8

next we convert to polar

A₃ = √((9.196)² + (8)²) ∠tan⁻¹( \(\frac{8 }{9.196}\) )

A₃ = √(84.566416 + 64) ∠tan⁻¹( 0.8699)

A₃ = √148.566416 ∠41.02°    

A₃ = 12.19∠41.02°

Therefore, value of A₃  in polar form is 12.19∠41.02°

d) A₄ = A₁A₂

giving your answer in rectangular form

we substitute

A₄ = (5.196 + j3) ( 4 + j5)

= 5.196( 4 + j5) + j3( 4 + j5)

= 20.784 + j25.98 + j12 - 15

A₄ = 5.784 + j37.98

Therefore, A₄ in rectangular form is 5.784 + j37.98

e) A₅ = A₁/(\(A^{*}\)₂)

giving your answer in exponential form

we know that \(A^{*}\)₂ is the complex  conjugate of A₂

so

\(A^{*}\)₂ = (6.403 ∠51.34° )*

= 6.403 ∠-51.34°

we convert to exponential form

A∠β can be written as A\(e^{j\beta }\)

\(A^{*}\)₂  = 6.403\(e^{-j51.34 }\)

also

A₁ = 6∠30

we convert to polar form

A₁ = 6\(e^{j30 }\)

so A₅ = A₁/(\(A^{*}\)₂)

A₅ = 6\(e^{j30 }\) / 6.403\(e^{-j51.34 }\)

A₅  = (6/6.403) \(e^{j(30+51.34) }\)

A₅  = 0.937\(e^{j81.34 }\)

Therefore A₅ in exponential form is 0.937\(e^{j81.34 }\)

Yes, I can help you create a Network Diagram and Chart based on the given information.

Creating a Network Diagram and Chart involves analyzing the dependencies between different activities in a project schedule to determine the critical path and identify the total float for each activity.

In the first step, the forward pass is calculated to determine the early start and early finish dates for each activity. Starting with activity A having an early start on day 1, the forward pass calculates the earliest possible start and finish dates for each subsequent activity based on their dependencies and durations.

In the second step, the backward pass is calculated to determine the late start and late finish dates for each activity. The late finish date for activity D is given as day 22, and by working backwards from that point, we can determine the latest possible start and finish dates for each preceding activity.

Finally, in the third step, the total float for each activity is calculated. Total float represents the amount of time an activity can be delayed without affecting the project's overall duration. It is calculated by finding the difference between the late start and early start dates (or late finish and early finish dates) for each activity. Activities with zero total float are on the critical path, meaning any delay in their completion will directly impact the project's duration.

By following these steps, we can create a Network Diagram and Chart that visually represents the project schedule, identifies the critical path, and provides information about the total float for each activity.

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The reason that operations managers consider these aspects is because they want to provide quality service to the users of the telephone line.

Globalization is a term that refers to an economic, technological, political, social and cultural process that has had influence throughout the world. Globalization is based on the growing communication and interdependence between the different countries of the world, uniting their markets and societies.

This situation is related to globalization because it shows that companies can hire employees anywhere in the world because technology allows a person from India to communicate with someone from the United States without any difficulty.

Additionally, it is part of globalization because employees are trained so that their English accent is similar to that of the United States so that users of the line do not detect that they are from another country and feel more confident to book their tickets.

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Answer:

Cómo forzar a Steam a reconocer los juegos instalados.

1) Vuelva a instalar los juegos sin descargar.

2) Agregue la carpeta Steam Library manualmente.

3) Reconocer juegos de una nueva unidad

4) Utilizar .acf Cache para forzar el reconocimiento de juegos de Steam .acf Cache para forzar el reconocimiento de juegos de Steam.

Explanation:

1) Vuelva a instalar los juegos sin descargar.

- Inicia Steam y ve a Juegos.

- Seleccione y haga clic en instalar para el juego que Steam no pudo reconocer.

- Steam comenzará a descubrir los archivos existentes para el juego.

2) Agregue la carpeta Steam Library manualmente.

- Lanzar Steam.

- Haga clic en Steam y seleccione Configuración.

- Haz clic en la pestaña Descargas.

- Haga clic en las carpetas de la biblioteca de Steam.

- En la ventana emergente, haz clic en Agregar carpeta de biblioteca y selecciona la ubicación donde se guardan todos los datos de tu juego Steam.

- Haga clic en Seleccionar y cerrar la configuración de Steam.

- Salga de la aplicación Steam y reinicie Steam.

- Steam ahora debería reconocer los juegos instalados nuevamente y enumerarlos en la carpeta de juegos.

3) Reconocer juegos de una nueva unidad

- Inicie la aplicación Steam desde el escritorio.

- Haz clic en Steam y selecciona Configuración.

- Haz clic en la pestaña Descargas.

- Haga clic en la carpeta de la biblioteca de Steam en la sección Bibliotecas de contenido.

- Haga clic en Agregar carpeta de biblioteca y navegue a la ubicación donde se mueven sus juegos (nuevo directorio) que es D: / games / your_subdirectory.

- Haga clic en Seleccionar y cerrar para guardar la carpeta de la biblioteca.

- Salga de Steam y reinícielo.

Steam escaneará la carpeta Biblioteca recientemente seleccionada y mostrará todos los juegos instalados.

4) Utilizar .acf Cache para forzar el reconocimiento de juegos de Steam .acf Cache para forzar el reconocimiento de juegos de Steam.

- Asegúrese de haber reinstalado Steam o tener la instalación existente.

- Mueva los datos del juego a C: >> Archivos de programa (x86) >> Steam >> carpeta Steamapps.

- Lanzar Steam.

- En este punto, Steam puede mostrar algunos juegos que están instalados correctamente.

- Para los juegos que se muestran como no instalados, seleccione y haga clic en el botón Instalar.

- Steam comenzará a descubrir todos los archivos existentes.

- Sin embargo, si Steam no reconoce los archivos existentes, comenzará a descargar los archivos y el progreso leerá 0%.

- Pausa la actualización de los juegos y sal de Steam. Vaya a C: >> Archivos de programa (x86) >> Steam >> Steamapps y encuentre todos los archivos .acf actuales.

¡¡¡Espero que esto ayude!!!

The given circuit can be simplified as follows: Finding Norton Current (IN)First, we convert the above circuit into a Norton equivalent circuit as shown below: To find the Norton Current, we need to short-circuit the load resistance (RL). The equivalent resistance seen from the load terminals is R1 || R2.  

Thus the Norton Current, IN = Vth / (R1 || R2) = 9 / (1 + 2) = 3A. To find RN, we need to remove the current source (IN) and short-circuit the load resistance (RL). The equivalent resistance seen from the load terminals is R1 || R2. Thus RN = R1 || R2 = 1 || 2 = 2/3 ΩThevenin Voltage. The Thevenin Voltage, VTH is the equivalent voltage across the load terminals with the load resistance (RL) removed.

To find VTH, we need to remove the load resistance (RL) and calculate the voltage across the load terminals. The open-circuit voltage, VOC is given by VOC = V1 + V2 = 6 + 3 = 9V.  The equivalent resistance seen from the load terminals is given by RTH = R1 || R2 = 1 || 2 = 2/3 ΩTherefore, the Norton Current, IN = 3A, Norton Resistance, RN = 2/3 Ω, Thevenin Voltage, VTH = 9V, Thevenin Resistance, RTH = 2/3 Ω.

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Answer:

The Dependent Variable is the Effect, Its value depends on changes from the Independent Variable

Hope this Helps

The values of non faradaic currect for linear sweeps are :

1) V = 0.02V/sec : Non faradic current = 0.4 micro ampere

2) V = 1V/ sec : Non faradic current = 20 micro amperes

3) V = 20V/sec : Non faradic current =  0.4 milliampere

Given,

Scan rate = V = 0.02V/sec

Cd = 20 microfarad / cm²

Here,

Non faradic current = V * Cd

Non faradic current = 0.02 * 20 * \(10^{-6}\)

Non faradic current = 0.4 micro ampere

If,

V = 1V/sec

Non faradic current = 1 * 20 * \(10^{-6}\)

Non faradic current = 20 micro amperes

If ,

V = 20V/sec

Non faradic current = 20 * 20 * \(10^{-6}\)

Non faradic current =  0.4 milliampere

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Answer:

right !

Explanation:

Answer:

B!

Explanation:

Answer:

B. Flying solo across the atlantic

Explanation:

history class

The multimeter used on PV equipment should be true RMS types capable of measuring at least 600 volts AC or DC.

This is based on the voltage readings capacity of the multimeter. The multimeter for measuring AC and DC volts usually comes with between 120-, 240-, 480-, 600- volts AC and 125-, 250-, 600-volts DC.

A multimeter is a common electronic instrument often used by technicians and engineers. It is either in analog or digital form. It is used for measuring any of the voltage, current, and resistance.

Hence, in this case, it is concluded that the correct answer is 600 voltages.

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Answer:

A) condenser pressure = 9.73 kPa,

B) 10242 kw

C) 36.9%

Explanation:

given data

entrance pressure of steam = 12.5 MPa

temperature of steam = 550⁰c

flow rate of steam = 7.7 kg/s

outer pressure = 2 MPa

reheated steam temperature = 450⁰c

isentropic efficiency of turbine( nt ) = 85% = 0.85

isentropic efficiency of pump = 90% = 0.90

From steam tables

at 12.5 MPa and 550⁰c ; h3 = 3476.5 kJ/kg,  S3 = 6.6317 kJ/kgK

also for an Isentropic expansion

S4s = S3 .

therefore when S4s = 6.6317 kJ/kg and P4 = 2 MPa

h4s = 2948.1 kJ/kg

nt = 0.85

nt (0.85) = \(\frac{h3-h4}{h3-h4s}\) = \(\frac{3476.5 - h4}{3476.5 - 2948.1}\)

making h4 subject of the equation

h4 = 3476.5 - 0.85 (3476.5 - 2948.1)

h4 = 3027.3 kj/kg

at P5 = 2 MPa and T5 = 450⁰c

h5 = 3358.2 kj/kg,  s5 = 7.2815 kj/kgk

at P6 , x6 = 0.95  and s5 = s6

using nt = 0.85 we can calculate for h6 and h6s

from the chart attached below we can see that

p6 = 9.73 kPa, h6 = 2463.3 kj/kg

B) the net power output

solution is attached below

c) thermal efficiency

thermal efficiency = 1 - \(\frac{qout}{qin}\) = 1 - ( 2273.7/ 3603.8) = 36.9% ≈ 37%

The statement that would be true about a critical path is; "All the Above" (Option D)

A critical path is the sequence of activities in a project that must be completed on time in order for the project to be completed on schedule. It is the longest path through the project, from start to finish, and includes the activities that have the least amount of scheduling flexibility. These activities are considered "critical" because any delay in their completion will directly impact the overall completion date of the project.

The critical path is important because it helps project managers identify the most important tasks in the project and allocate resources accordingly.

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Answer:

Try This Out!

Explanation:

To solve this problem, you need to use the first law of thermodynamics to analyze the combustion process that occurs in the constant-volume tank.

First, you need to determine the initial and final states of the system. The initial state is given as 1 lbmol of methane (CH₂) gas and 3 Ibmol of O₂ at 77°F and 1 atm. The final state is given as the same mixture of gases at 1800 R.

Next, you need to determine the heat transfer during the process. To do this, you can use the first law of thermodynamics in the form of the heat equation:

Q = ΔU + W

where Q is the heat transfer, ΔU is the change in internal energy, and W is the work done by the system.

Since the process occurs at constant volume, the work done by the system is zero. Therefore, the heat transfer can be calculated as:

Q = ΔU

You can then use the change in internal energy to determine the final pressure in the tank. The change in internal energy can be calculated using the internal energy of the reactants and products, which can be found from tables of thermochemical data or by using equations of state.

Once you have determined the heat transfer and the change in internal energy, you can use these values to calculate the final pressure in the tank using the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the universal gas constant, and T is the temperature.

You can then use the values of the final temperature and the number of moles of gas in the tank to calculate the final pressure.

I hope this helps! Let me know if you have any questions.

Answer:

The velocity at section is approximately 42.2 m/s

Explanation:

For the water flowing through the pipe, we have;

The pressure at section (1), P₁ = 300 kPa

The pressure at section (2), P₂ = 100 kPa

The diameter at section (1), D₁ = 0.1 m

The height of section (1) above section (2), D₂ = 50 m

The velocity at section (1), v₁ = 20 m/s

Let 'v₂' represent the velocity at section (2)

According to Bernoulli's equation, we have;

\(z_1 + \dfrac{P_1}{\rho \cdot g} + \dfrac{v^2_1}{2 \cdot g} = z_2 + \dfrac{P_2}{\rho \cdot g} + \dfrac{v^2_2}{2 \cdot g}\)

Where;

ρ = The density of water = 997 kg/m³

g = The acceleration due to gravity = 9.8 m/s²

z₁ = 50 m

z₂ = The reference = 0 m

By plugging in the values, we have;

\(50 \, m + \dfrac{300 \ kPa}{997 \, kg/m^3 \times 9.8 \, m/s^2} + \dfrac{(20 \, m/s)^2}{2 \times 9.8 \, m/s^2} = \dfrac{100 \ kPa}{997 \, kg/m^3 \times 9.8 \, m/s^2} + \dfrac{v_2^2}{2 \times 9.8 \, m/s^2}\)50 m + 30.704358 m + 20.4081633 m = 10.234786 m + \(\dfrac{v_2^2}{2 \times 9.8 \, m/s^2}\)

50 m + 30.704358 m + 20.4081633 m - 10.234786 m = \(\dfrac{v_2^2}{2 \times 9.8 \, m/s^2}\)

90.8777353 m = \(\dfrac{v_2^2}{2 \times 9.8 \, m/s^2}\)

v₂² = 2 × 9.8 m/s² × 90.8777353 m

v₂² = 1,781.20361 m²/s²

v₂ = √(1,781.20361 m²/s²) ≈ 42.204308 m/s

The velocity at section (2), v₂ ≈ 42.2 m/s

Lean production works best with standardized and repeatable processes. Lean production is a manufacturing technique that frequently aims to cut down on wait times for both suppliers' and customers' .

Lean manufacturing seeks to improve processes so that they use less energy, time, and resources overall. For some businesses than others, lean tools may be a better fit. But among the most helpful lean tools are Kaizen, 5S, Kanban, Value Stream Mapping, and Focus PDCA. Value, the value stream, flow, pull, and perfection are the five cornerstones of lean manufacturing, respectively. These are now the cornerstones on which lean is implemented. 1. Value: Value is established from the viewpoint of the customer and relates to the price point at which they are willing to purchase goods or services. Lean production is a manufacturing strategy that frequently aims to cut down on wait times for both suppliers' and customers' responses as well as those inside the manufacturing machine.

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Answer:

color

Explanation:

Without more context I cannot be sure that this is correct, but I believe you are looking for the CSS declaration property of "color".

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

Once the external shape and internal features of a part are represented by a combination of lines, further information is provided by Dimension.

In regards to geometry, the  three-dimensional shape is known to be one that can be said to be a form of solid figure or an object/shape that is of known to be made up of three dimensions which are length, width, and height.

Note that the three-dimensional shapes have height as well as thickness or depth.

Therefore, Once the external shape and internal features of a part are represented by a combination of lines, further information is provided by Dimension.

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Answer:

One corner ( D )

Explanation:

when dimensioning the location of a house on site the standard and the acceptable procedure is to ; Dimension One corner of the house

Adjacent lots is a term used to describe parcels of the site that meet each other along their boundary lines. and they also include parcels that may be separated by streets

Answer:

the safest path when cornering in an ambulance is to enter high and exit low

Explanation:

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.

Strategy becomes an increasingly important source of direction as the environment becomes more turbulent and unpredictable.

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Answer:

at constant pressure, the heat flow for any process is equal to the change in the internal energy of the system plus the PV work done. Comparing the previous two equations shows that at constant pressure, the change in the enthalpy of a system is equal to the heat flow: ΔH=qp.

Explanation:

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