set 5 MCQ Questions & Answers Detailed Explanation

Question : 1

An electric motor is a device

a) That works on the principle described by Fleming’s left hand rule

b) That converts electrical energy to mechanical energy

c) Both (a) and (b)

d) Neither (a) nor (b)

Question : 2

A wire of resistance 16 W is bent in the form of a circle. What is the effective resistance between diametrically opposite points?

a) 4 W

b) 1 W

c) 2 W

d) 8 W

Question : 3

What should be the characteristic of fuse wire?

a) Low melting point, low specific resistance

b) High melting point, low specific resistance

c) High melting point, high specific resistance

d) Low melting point, high specific resistance

Question : 4

When electrical energy is converted into motion

a) Heat loss is 30 percent

b) There is no heat loss

c) Heat loss is 50 percent

d) Heat loss is 80 percent

Question : 5

At magnetic poles, the angle of dip is

a) zero

b) 45°

c) 30°

d) 90°

Question : 6

Which one among the following is the correct order of power consumption for light of equal intensity ?

a) CFL tube < Fluorescent tube < Light emitting diode < Incandescent bulb

b) CFL tube < Fluorescent tube < Incandescent bulb < Light emitting diode

c) Light emitting diode < CFL tube < Fluorescent tube < Incandescent bulb

d) Incandescent bulb < Light emitting diode < Fluorescent tube < CFL tube