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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  • Total Questions17

  • Time Allowed20

Physics ICS Part 2 Chapter 16 Online MCQ's Test

00:00
Question # 1

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Question # 2

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

Question # 3

In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?

Question # 4

An A.C. voltmeter reads 220 V, its peak value will be

Question # 5

The resonance frequency is given by:

Question # 6

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

Question # 7

Resistance of choke is

Question # 8

The main use of A.C is

Question # 9

The device which allows only the flow of D.C. is.

Question # 10

At high frequency the value of reactance of capacitor will be.

Question # 11

Power dissipation is a pure inductive or in a pure capacitance circuit is:

Question # 12

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

Question # 13

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

Question # 14

The electromagnetic spectrum contains

Question # 15

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

Question # 16

In three phase A.C. generator the phase difference between each pair of coil 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 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
2 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
3 The peak value of alternating current is 5√2 A. The mean square value of current will be:
A. 5A
B. 2.5A
C. 5√2A
D. 52
4 In pure capacitor A.C. circuit, the current I and charge q are.
A. In phase
B. Out of phase
C. Parallel to each other
D. None of above
5 An A.C. voltmeter reads 220 V, its peak value will be
A. 225 V
B. 240 V
C. 311.12 V
D. 300 V
6 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
7 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite
8 The AC system is preferred to DC system because:
A. AC voltage can be easily changed in magnitude
B. DC motor angular velocity is affected badly
C. High voltage AC transmission is less efficient
D. Domestic appliance require AC voltage for their operation
9 In A.C circuit through a capacitor which one is:
A. Current leads voltage by 90
B. Current lags behind voltage by 90
C. Both will be in phase
D. None of above 
10 In frequency modulation which factor changed.
A. Amplitude of charge carriers
B. Frequency of charge carriers
C. Amplitude of signal
D. Frequency of signal

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