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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Physics ICS Part 2 Chapter 16 Online MCQ's Test

00:00
Question # 1

Electro magnetic waves emitted from radio antenna are.

Question # 2

The natural frequency of L.C circuit is equal to

Question # 3

In frequency modulation which factor changed.

Question # 4

The inductive reactance of a coil is direction proportional to.

Question # 5

The circuit in which current and voltage are in phase, the power factor is:

Question # 6

The slope of q-t curve at any instant of time gives.

Question # 7

The electromagnetic spectrum contains

Question # 8

The condition of resonance is:

Question # 9

In a pure inductive A.C. circuit the current.

Question # 10

A capacitor is perfectly insulator for:

Question # 11

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

Question # 12

For electromagnetic waves, Maxwell generalized

Question # 13

The reactance of inductor depends upon

Question # 14

The power factor of RL series circuit is.

Question # 15

An electromagnetic wave goes from air to glass which of the following does not change?

Question # 16

Radio frequency choke is

Question # 17

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

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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 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
2 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
3 The peak to peak value of alternating voltage is
A. 2Vo
B. Vo
D. None of these
4 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
5 Power dissipation in A.C circuit is expressed as:
A. P =Irms x Vrms Sinθ
B. IxVCosθ
C. IrmsxVrmsCosθ
D. Irms x Vrms Sin2θ
6 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
7 Radio frequency choke is
A. Iron cored
B. Air Cored
C. Air as well as iron cored
D. None of these
8 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
9 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite
10 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

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