2nd Year Physics Chapter 16 Online MCQ Test for 12th Class Physics Chapter 16 (Alternating Current)

ICS Part 2 Physics
Chapter 16 Test

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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 16 Online MCQ's Test"

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

00:00
Question # 1

Electron vibrating 94,000 times each second will produce radio waves of frequency.

Question # 2

At resonance frequency, the impedance of RLC series circuit is.

Question # 3

An in cudutor may store energy in

Question # 4

The peak value of A.C source is 20 A, then its rms value will be.

Question # 5

The mean value of A.C. in a cycle is.

Question # 6

Main reason for world wide use of A.C. is

Question # 7

In case of capacitor, the unit of reactance is

Question # 8

Power dissipation in A.C circuit is expressed as:

Question # 9

In LR circiut which one of the following statements is correct?

Question # 10

In Series resonance circuit the impedance of circuit art resonance frequency, is

Question # 11

Average value of current and voltage over a complete cycle is.

Question # 12

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

Question # 13

SI unit of reactance is.

Question # 14

Xc =

Question # 15

In frequency modulation, the amplitude of carrier waves is

Question # 16

The main use of A.C is

Question # 17

The expression P = VI hold only when current and voltage are.

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ICS Part 2 Physics Chapter 16 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
2 An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:
A. 50 Hz
B. 25Hz
C. 100 Hz
D. 75 Hz
3 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
4 An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
A. 50 Hz
B. 100 Hz
C. 80 Hz
D. 120 Hz
5 An in cudutor may store energy in
A. Its magnetic field
B. Its coil
C. Its electric field
D. A neighboring circuit
6 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
7 The inductive reactance of a coil is direction proportional to.
A. Inductance
B. Resistance
C. Frequency of A.C.
D. Both frequency of A.C. and inductance
8 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
9 Power dissipation is a pure inductive or in a pure capacitance circuit is:
A. 106
B. 0
C. 10
D. Maximum
10 The unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm

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