# Inductance Speed MCQ Questions & Answers

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

Question 1

Calculate the active power in a 168.12 H inductor.

A. 65 W
B. 0 W
C. 68 W
D. 64 W

Question 2

Calculate the active power in an 8.12 F capacitor.

A. 89 W
B. 41 W
C. 0 W
D. 48 W

Question 3

Calculate the condition for maximum voltage regulation in the synchronous machine.

A. ?=?s
B. ?=2?s
C. ?=4?s
D. ?=8?s

Question 4

Calculate the line current in the delta connection when phase current=17 A.

A. 29.44 A
B. 24.64 A
C. 23.48 A
D. 26.56 A

Question 5

Calculate the line voltage in the delta connection when phase voltage=45 V.

A. 46 V
B. 47 V
C. 45 V
D. 78 V

Question 6

Calculate the maximum value of slip when rotor resistance is 2 ? and rotor reactance is 3 ?.

A. 0.66
B. 0.33
C. 0.44
D. 0.99

Question 7

Calculate the peak value of sinusoidal waveform if the r.m.s value is 21 V.

A. 29.69 V
B. 48.74 V
C. 69.23 V
D. 25.74 V

Question 8

Calculate the total heat dissipated in a rotor resistor of 21 ? when .81 A current flows through it.

A. 13.77 W
B. 12.56
C. 16.78 W
D. 13.98 W

Question 9

Calculate the voltage regulation in the synchronous machine if the no-load voltage is 12 V and the full load voltage is 15V.

A. -20%
B. -40%
C. -60%
D. -80%

Question 10

If induction motor air gap power is 2 KW and mechanically developed power is 1 KW, then rotor ohmic loss will be _________ KW.

A. 1
B. 2
C. 3
D. 4

Question 11

The slope of the V-I curve is 35.48°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

A. 0.452 ?
B. 0.462 ?
C. 0.752 ?
D. 0.712 ?

Question 12

Zero voltage regulation can be only achieved in leading power factor load.

A. TRUE
B. FALSE

Question 13

Calculate the condition for maximum voltage regulation in the synchronous machine.

A. Φ=ϴs
B. Φ=2ϴs
C. Φ=4ϴs
D. Φ=8ϴs

Question 14

Calculate the maximum value of slip when rotor resistance is 2 Ω and rotor reactance is 3 Ω.

A. 0.66
B. 0.33
C. 0.44
D. 0.99

Question 15

Calculate the total heat dissipated in a rotor resistor of 21 Ω when .81 A current flows through it.

A. 13.77 W
B. 12.56
C. 16.78 W
D. 13.98 W