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 combined effect of resistance and reactance is knows as.

Question # 2

The sum of positive and negative peak value called.

Question # 3

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

Question # 4

XL=

Question # 5

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

Question # 6

The value of capacitive reactance is given by

Question # 7

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

Question # 8

The effective value of any sinusoidal alternating current or voltage is

Question # 9

In RLC circuit the energy is dissipated in

Question # 10

During each cycle A.C. voltage reaches a peak value.

Question # 11

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

Question # 12

In AC system we generate sine wave form because:

Question # 13

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

Question # 14

The natural frequency of L.C circuit is equal to

Question # 15

The circuit in which current and voltage are in phase, the power factor is:

Question # 16

Main reason for world wide use of A.C. 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 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
2 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
3 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
4 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
5 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?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times
6 The effective value of any sinusoidal alternating current or voltage is
D. None of the above
7 The combined effect of resistance and reactance in circuit is called:
A. Impedance
B. Inductance
C. Capacitance
D. None of above
8 The device which allows only the continuous flow of AC through it is.
A. Inductor
B. Battery
C. Thermistor
D. Capacitor
9 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
10 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

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