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

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Question # 1

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

Question # 2

In purely resistive A.C circuit, instantaneous value of voltage and current:

Question # 3

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

Question # 4

An in cudutor may store energy in

Question # 5

In A.C circuit through a capacitor which one is:

Question # 6

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

Question # 7

In three phase A.C supply coils are inclined at an angle of.

Question # 8

The peak value of alternating current is 5√2 A. The mean square value of current will be:

Question # 9

The sum of positive and negative peak value called.

Question # 10

A capacitor is perfectly insulator for:

Question # 11

The reactance of inductor depends upon

Question # 12

The phase angle of a series RLC circult at resonant frequency is

Question # 13

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

Question # 14

For electromagnetic waves, Maxwell generalized

Question # 15

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

Question # 16

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

Question # 17

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

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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 In purely resistive A.C circuit, instantaneous value of voltage and current:
A. Current lags behind voltage
B. Current leads voltage by π/2
C. Both are in Phase
D. Voltage leads current by Pase θ=π/2
2 The device which allows only the flow of D.C. is.
A. Capacitors
B. transformer
C. Inductor
D. Generator
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 frequency modulation which factor changed.
A. Amplitude of charge carriers
B. Frequency of charge carriers
C. Amplitude of signal
D. Frequency of signal
5 Radio frequency choke is
A. Iron cored
B. Air Cored
C. Air as well as iron cored
D. None of these
6 Power dissipation in A.C circuit is expressed as:
A. P =Irms x Vrms Sinθ
B. IxVCosθ
C. IrmsxVrmsCosθ
D. Irms x Vrms Sin2θ
7 An electromagnetic wave goes from air to glass which of the following does not change?
A. Radio waves
B. X-rays
C. Ultra violet radiation
D. Ultra sond waves
8 When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.
A. 100 Ohm
B. 10 Ohm
C. 1000 Ohm
D. 1 Ohm
9 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
10 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q

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