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

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Question # 1

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

Question # 2

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

Question # 3

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

Question # 4

The combined effect of resistance and reactance is knows as.

Question # 5

The flow of D.C current is opposed by

Question # 6

If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.

Question # 7

A resistance frequency the impedance of RLC parallel circuit is.

Question # 8

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

Question # 9

In modulation, low frequency signal is known as

Question # 10

X1is low for low frequency Fy but Xc is.

Question # 11

Phase difference between V and I of an A.C through resistor is.

Question # 12

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 # 13

Choke consumes extremely small

Question # 14

In case of capacitor, the unit of reactance is

Question # 15

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

Question # 16

The reactance is the ratio of

Question # 17

In three phase voltage across any two lines is about.

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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 frequency modulation, the amplitude of carrier waves is
A. Increases
B. Remains constant
C. Decreases
D. None of these
2 An alternating quantity (voltage or current) is completely known if we know its:
A. Maximum
B. Frequency and phase
C. Effective value
D. Both (a) & (b)
3 In pure capacitor A.C. circuit, the current I and charge q are.
A. In phase
B. Out of phase
C. Parallel to each other
D. None of above
4 The natural frequency of L.C circuit is equal to
5 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
6 The inductive reactance of a coil is direction proportional to.
A. Inductance
B. Resistance
C. Frequency of A.C.
D. Both frequency of A.C. and inductance
7 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
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 An in cudutor may store energy in
A. Its magnetic field
B. Its coil
C. Its electric field
D. A neighboring circuit
10 Electron vibrating 94,000 times each second will produce radio waves of frequency.
A. 94 Hz
B. 940 HZ
C. 94 Hz
D. 490 Hz

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