1. Using your own words, explain how Siemens HMI output can be created.

The synchronous generator or alternator is an electrical machine that converts the mechanical power
from a prime mover into an AC electrical power at a particular voltage and frequency.
The synchronous motor always runs at a constant speed called synchronous speed. A three phase, 8
pole, synchronous Generator is coupled to a diesel engine running at 500 rpm. It supplies an induction
motor which has a full load speed of 1440 rpm. Find the percentage slip and number of poles of the
induction motor

1. You want to conduct an experiment to understand how the power generated by a wind turbine is affected by the speed of the wind. Write your hypothesis (1point) and explain how you can conduct the experiment (assume that you’re in laboratory conditions like we preformed the Wind Turbine experiment) eg the experiment needed and the procedure of the experiment (1 point). Which parameters/conditions in the experiment should be kept under control and which parameters should be observed to test the hypothesis? (1 point)

(b) Explain a 1-ф full wave controlled semi converter with freewheel diode for RLE load.

You have access two 7-segment decoder outputs from an existing circuit. These outputs
show the numbers 00 through 15. Build a circuit to convert the two 7-segment displays,
which display decimal, to one 7- segment display, which displays the correct
hexadecimal number.   

Design a common-emitter amplifier that has a dc input value of 15v and that meets the following requirements

1. a gain of at least 80

2. low frequency -3dB less than 100Hz

Specify the aliasing frequency of a signal that has a maximum frequency of 75 kHz and a sample frequency of 100 kHz. Use the folding diagram.

5.3 Explain how the necessary calibration frequency is determined for a measuring instrument.

Determine the response to the unit step if the Z transform of a response to the unit impulse of a causal system is:
H (z) = ((z ^ 3) -1) / ((z ^ 4) -1)

give a detailed matlab code to implement unscented KF on arbitrary first order nonlinear system

The most commonly used gadget that you should know of is a ding-dong doorbell using an electromagnet. In order to make a door bell, please answer the following questions:

1. List the items needed to make a door bell using common household stuff.
2. Draw its labeled schematics, and explain its working principle
3. Which Maxwell’s equation will you use to design the doorbell actuation
4. Describe two ways to make the bell sound loud.
5. List five commercial uses of electromagnets other than doorbell.

81. Given: Service drop conductors passing over a swimming pool have a vertical clearance from the water surface of 18 ft. these conductors must be located a minimum of _____ ft. horizontally from the outer edge of the swimming pool.

A. 0

B. 10

C. 15

D. 22.5

82. What is the full load current in amperes for a 1-hp single-phase, 115-volt, AC motor?

A. 2.1

B. 8

C. 8.4

D. 16

83. If a branch circuit supplies a single 14-ampere non-motor-operated appliance without an over current protection rating, the rating of the over current protection shall not exceed _____ percent of the appliance rated current.

A. 90

B. 100

C. 125

D. 150

84. What is the maximum overcurrent protection rate in amperes permitted for an appliance without a motor that has an input rating of 40 amperes?

A. 30

B. 40

C. 50

D. 60

85. The overload protection for a 3-phase, 25 Hp, 480-volt motor shall be selected

A. from the motor nameplate full load current

B. from the full load current in table 430-150 of the NEC

C. from the locked-rotor current in table 430-150 of the NEC

D. as a percentage of the motor branch-circuit overcurrent protection

86. Branch-circuit conductors that serve a 3-phase, 230-volt, 15 ph induction-type motor shall have an allowance ampacity of at least _____ amperes.

A. 42

B. 46.2

C. 52. 5

D. 60.5

87. Disregarding exceptions, where the design and operation of a generator does not prevent overloading the ampacity of the undergrounded phase conductors shall be at least ______ percent of the name plate current rating of the generator.

A. 80

B. 100

C. 115

D. 125

88. A circuit that supplies a 1/2 -hp motor that operates utilization equipment fastened in place in conjunction with other loads shall be calculated by adding the sum of the other loads plus _____ percent of the largest motor.

A. 100

B. 125

C. 150

D. 175

89. When the design and operation of the generator will prevent overloading the conductors shall not be less than ______>

A. the same hp as the generator

B. 100 percent of nameplate current

C. 115 percent of nameplate current

D. 115 percent of the hp of the generator

90. Transformers for sight located in an attic or soffit shall have a permanent walkway of at least _____ in. wide.

A. 12

B. 18

C. 24

D. 36

Specify the aliasing frequency of a signal that has a maximum frequency of 92kHz and a sample frequency of 130kHz. Is this an optimal sampling frequency? If so, explain why? If not, propose an optimal sampling frequency.