Adjusting Stator Voltage MCQ Questions & Answers

Adjusting Stator Voltage MCQs : This section focuses on the "Adjusting Stator Voltage". These Multiple Choice Questions (MCQs) should be practiced to improve the Adjusting Stator Voltage skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

Calculate the average value of the sinusoidal waveform y(t)=4.56cos(77.64?t+4800?÷68).

A. 41 V

B. 0 V

C. 48 V

D. 78 V

Question 2

Calculate the time period of the waveform v(t)=.6sin(.1?t+8?)+17cos(2?t+?)+ 4tan(.1?t).

A. 88 sec

B. 20 sec

C. 70 sec

D. 43 sec

Question 3

Calculate the time period of the waveform y(t)=sin(.1?t)+cos(.2?t).

A. 20 sec

B. 30 sec

C. 40 sec

D. 10 sec

Question 4

Calculate the value of capacitive reactance if F=60 Hz and C=14 H.

A. 189.5 m?

B. 252.4 m?

C. 244.5 m?

D. 244.8 m?

Question 5

Calculate the value of inductive reactance if F=50 Hz and L=12 H.

A. 3768

B. ?

C. 2578 ?

D. 2477 ?

Question 6

Calculate the value of new slip using the given data: V1=12 V, S1=.1, V2=5.

A. 0.576

B. 0.247

C. 0.487

D. 0.987

Question 7

Calculate the value of resistance if total heat dissipated is 78 W when 5 A current flows through it.

A. 3.12 ?

B. 2.24 ?

C. 1.45 ?

D. 5.13 ?

Question 8

If induction motor air gap power is 28.63 KW and gross developed power is 18.8 KW, then rotor ohmic loss will be _________ KW.

A. 9.83

B. 10.55

C. 15.54

D. 4.74

Question 9

R.M.S value of the periodic square waveform of amplitude 20 V is _______

A. 20 V

B. 18 V

C. 17 V

D. 13 V

Question 10

The slope of the V-I curve is 56.489°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

A. 1.5 ?

B. 1.6 ?

C. 2.5 ?

D. 1.4 ?

Question 11

The stator voltage control method is a part of the slip changing technique.

A. True

B. False

Question 12

The value of slip at the starting of an induction motor is ________

A. 0

B. 1

C. 2

D. 3

Question 13

The value of the slip of an induction motor during full load condition is ________

A. 0.99

B. 0.1

C. 0.8

D. 0

Question 14

Calculate the average value of the sinusoidal waveform y(t)=4.56cos(77.64πt+4800π÷68).

A. 41 V

B. 0 V

C. 48 V

D. 78 V

Question 15

Calculate the time period of the waveform v(t)=.6sin(.1πt+8π)+17cos(2πt+π)+ 4tan(.1πt).

A. 88 sec

B. 20 sec

C. 70 sec

D. 43 sec

Question 16

Calculate the time period of the waveform y(t)=sin(.1πt)+cos(.2πt).

A. 20 sec

B. 30 sec

C. 40 sec

D. 10 sec

Question 17

Calculate the value of capacitive reactance if F=60 Hz and C=14 H.

A. 189.5 mΩ

B. 252.4 mΩ

C. 244.5 mΩ

D. 244.8 mΩ

Question 18

Calculate the value of resistance if total heat dissipated is 78 W when 5 A current flows through it.

A. 3.12 Ω

B. 2.24 Ω

C. 1.45 Ω

D. 5.13 Ω

Question 19

The slope of the V-I curve is 56.489°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

A. 1.5 Ω

B. 1.6 Ω

C. 2.5 Ω

D. 1.4 Ω