Second Year Physics Chapter 16 Online MCQ Test for 2nd Year Physics Chapter 16 Alternating Current Preparation

FSC Part 2 Physics
Chapter 16 Test

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Physics FSC Part 2 Chapter 16 Online MCQ's Test

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Question # 1

The value of capacitive reactance is given by

Question # 2

Impedance is denoted by:

Question # 3

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

Question # 4

A resistance frequency the impedance of RLC parallel circuit is.

Question # 5

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

Question # 6

The peak to peak value of alternating voltage is

Question # 7

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

Question # 8

In RLC circuit the energy is dissipated in

Question # 9

The unit of impedance is

Question # 10

The sum of positive and negative peak value called.

Question # 11

Radio frequency choke is

Question # 12

In frequency modulation which factor changed.

Question # 13

The combined effect of resistance and reactance is knows as.

Question # 14

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

Question # 15

The effective value of any sinusoidal alternating current or voltage is

Question # 16

In A.C circuit of inductor which one is true

Question # 17

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

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FSC 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 Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
2 The device which allows only the flow of D.C. is.
A. Capacitors
B. transformer
C. Inductor
D. Generator
3 The highest value reached by the voltage or current is one cycle is called:
A. Peak to peak value
B. Peak value
C.
Instantaneous value
D. Root mean square value
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 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
6 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
7 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
8 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
9 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative
10 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 

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