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

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

Question # 2

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

Question # 3

In AC system we generate sine wave form because:

Question # 4

The main reason for world wide use of A.C is because:

Question # 5

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

Question # 6

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 # 7

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

Question # 8

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 9

The wave form of alternating voltage is a

Question # 10

In RLC circuit the energy is dissipated in

Question # 11

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

Question # 12

Electro magnetic waves emitted from radio antenna are.

Question # 13

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

Question # 14

In frequency modulation, the amplitude of carrier waves is

Question # 15

The device which allows only the continuous flow of AC through it is.

Question # 16

If Vrms be the root mean square value of emf then its peak to peak value is given by

Question # 17

The internal resistance of a capacitor is called:

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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 In three phase A.C supply coils are inclined at an angle of.
A. 0o
B. 90o
C. 120o
D. 80o
3 The expression P = VI hold only when current and voltage are.
A. In phase
B. Out of phase
C. At right angle to each other
D. At angle of 120 o
4 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
5 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
6 High frequency radio wave is called as
A. Fluctuate
B. Carrier wave
C. Matter wave
D. Mechanical wave
7 The peak to peak value of alternating voltage is
A. 2Vo
B. Vo
D. None of these
8 The device which allows only the continuous flow of AC through it is.
A. Inductor
B. Battery
C. Thermistor
D. Capacitor
9 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative
10 The basic circuit element in A.C. circuit which controls current.
A. Resistor only
B. Capacitor only
C. Inductor only
D. All of these

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