# Dynamic Braking MCQ Questions & Answers

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

Question 1

Calculate the energy stored in the capacitor if the voltage across the capacitor is 20 V and capacitance value is 2 F.

A. 400 J
B. 200 J
C. 100 J
D. 50 J

Question 2

Calculate the energy stored in the inductor if the current value is 4 A and inductance value is 1 H.

A. 4 J
B. 2 J
C. 8 J
D. 5 J

Question 3

Calculate the equivalent inductance when n inductors are connected in series of values L.

A. n2L H
B. nL H
C. .5L H
D. 2 H

Question 4

Calculate the equivalent resistance when two resistances are connected in series of values 12 ?, 10 ?.

A. 32 ?
B. 22 ?
C. 47 ?
D. 17 ?

Question 5

Calculate the quality factor for the pure capacitor.

A. inf
B. 0
C. 1
D. 2

Question 6

Calculate the quality factor for the purely inductive coil.

A. inf
B. 10
C. 3
D. 6

Question 7

During the open circuit condition, the current is equal to ______

A. 1 A
B. 0 A
C. 4 A
D. 7 A

Question 8

Full form of WRIM.

A. Wound round induction motor
B. World cage induction motor
C. Wolf cage induction motor
D. Squirrel cage inverter motor

Question 9

Reactive power is positive in the case of the capacitor.

A. True
B. False

Question 10

Reactive power is positive in the case of the inductor.

A. True
B. False

Question 11

The minimum value of the impedance in case of the series RLC network is ___________

A. R
B. 0
C. Xl
D. Xc

Question 12

The polarity of back e.m.f changes in which of the method?

A. Plugging
B. Regenerative braking
C. Dynamic braking
D. Rheostatic braking

Question 13

The Thevenin voltage of a dead circuit is zero volts.

A. True
B. False

Question 14

Which braking method is the best method for obtaining high braking torque?

A. Regenerative braking
B. Plugging
C. Dynamic braking
D. Rheostatic braking

Question 15

Calculate the equivalent resistance when two resistances are connected in series of values 12 Ω, 10 Ω.

A. 32 Ω
B. 22 Ω
C. 47 Ω
D. 17 Ω