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

Question # 2

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

Question # 3

In AC system we generate sine wave form because:

Question # 4

The internal resistance of a capacitor is called:

Question # 5

Xc =

Question # 6

The Basic circuit element in a D.C. circuits which controls the current and voltage is

Question # 7

The flow of D.C current is opposed by

Question # 8

At high frequency, the current through a capacitor is

Question # 9

Radio frequency choke is

Question # 10

In frequency modulation, the amplitude of carrier waves is

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Power dissipated in a pure inductor is.

Question # 15

In modulation, low frequency signal is known as

Question # 16

The highest value reached by the voltage or current is one cycle is called:

Question # 17

In A.C circuit through a capacitor which one 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 Series resonance circuit the impedance of circuit art resonance frequency, is
A. Maximum
B. Minimum
C. It is unequal to R
D. None of above
2 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
3 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
4 Average value of current and voltage over a complete cycle is.
A. Positive
B. Negative
C. Zero
D. Infinite
5 The peak value of A.C source is 20 A, then its rms value will be.
A. 14.1 A
B. 10 A
C. 20 A
D. 28.2 A
6 In frequency modulation which factor changed.
A. Amplitude of charge carriers
B. Frequency of charge carriers
C. Amplitude of signal
D. Frequency of signal
7 In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.
A. 90o
B. 270o
C. 0o
D. 180o
8 If Io is the peak value of current, then its root mean square value is given by
B. 2 Io
C. Io
D. 0.7 Io
9 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
10 The device which allows only the flow of D.C. is.
A. Capacitors
B. transformer
C. Inductor
D. Generator

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