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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Physics ICS Part 2 Chapter 16 Online MCQ's Test

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Question # 1

Direct current can not flow through.

Question # 2

The unit of impedance is

Question # 3

In A.C circuit of inductor which one is true

Question # 4

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

Question # 5

In AC system we generate sine wave form because:

Question # 6

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

Question # 7

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

Question # 8

The resonance frequency is given by:

Question # 9

The value of capacitive reactance is given by

Question # 10

The reactance of inductor depends upon

Question # 11

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

Question # 12

In case of capacitor, the unit of reactance is

Question # 13

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

Question # 14

In metal detector, we use.

Question # 15

The electromagnetic spectrum contains

Question # 16

when an inductor comes close to a metallic object, its inductance is.

Question # 17

An in cudutor may store energy in

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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 three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
2 The combined effect of resistance and reactance in circuit is called:
A. Impedance
B. Inductance
C. Capacitance
D. None of above
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 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
5 Main reason for world wide use of A.C. is
A. It is cheaper
B. Transmitted
C. Botha a and b
D. Reaches in short time
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 reactance of inductor depends upon
A. L
D. All of the above
8 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
9 The internal resistance of a capacitor is called:
A. Impedance
B. Resistance
C. Reactance
D. Conductance
10 Power dissipated in a pure inductor is.
A. Large
B. Small
C. Infinite
D. Zero

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