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