set 5 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

For a transistor amplifier, the voltage gain

a) is high at high and low frequencies and constant in the middle frequency range.

b) is low at high and low frequencies and constant at mid frequencies.

c) remains constant for all frequencies.

d) none of the above

Question : 3

Two magnets A and B are placed with like poles having one above another. What will happen?

a) A will move side ways

b) A will stuck to B

c) A will remain as in figure

d) Can't say

Question : 4

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 : 5

Consider the following statements :

1. An ammeter is always connected in series in the circuit.
2. A voltmeter can only be connected in series in the circuit.
3. A voltmeter has low resistance.

a) 1 only

b) 1 and 2

c) 2 and 3

d) 3 only

Question : 6

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