# Alternating Currents MCQ Questions Answers Electronics Engineering

## Alternating Currents MCQ Questions Answers Electronics Engineering

Here you will find information about the Alternating Currents MCQ of electronics engineering.If you are preparing for competitive exam then we provide Alternating Current PDF &  Alternating Current MCQ Questions Download here so you can take preparation from here.Here are the alternating Current Objective Questions we ask about the alternating current of electronics engineering-

1) __________ will work only on d.c supply.

a) Electric lamp

b) Refrigerator

c) Heater

d) Electroplating

Option – d)

2) When 200 V sinusoidal peak-to-peak wave is connected across an a.c. voltmeter, it will read …….

a) 141.4 V

b) 50 V

c) 70.7 V

d) none of the above

Option – c)

3) The average value of a sinusoidal current is 100 A. its r.m.s. value is …….

a) 63.7 A

b) 70.7 A

c) 141.4 A

d) 111 A

Option – d)

4) The peak factor of a half-wave rectified a.c. is ………..

a) 1.57

b) 2

c) 1.11

d) 1.4142

Option – b)

5) The form factor of a sinusoidal wave is …………..

a) 1.414

b) 1.11

c) 2

d) 1.5

Option – b)

6) A sine wave has a maximum value of 20 V. Its value at 1350 is……..

a) 10 V

b) 14.14 V

c) 15 V

d) 5 V

Option – b)

7) A 100 V peak a.c. is as effective as ……….. d.c

a) 100 V

b) 50 V

c) 70.7 V

d) none of the above

Option – c)

8) The r.m.s. value of sinusoidally varying current is ,………. That of its average value.

a) more than

b) less than

c) same as

d) none of the above

Option – a)

9) The effective value 2 A d.c. current is

a) 1 A

b) 4 A

c) 16 A

d) 2 A

Option – d)

10) What is the peak-to-peak value for 120 V a.c.?

a) 240 V

b) 480 V

c) 393 V

d) 391 V