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

00:00
Question # 1

In frequency modulation which factor changed.

Question # 2

In three phase voltage across any two lines is about.

Question # 3

A capacitor is perfectly insulator for:

Question # 4

The main reason for world wide use of A.C is because:

Question # 5

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

Question # 6

The wave form of alternating voltage is a

Question # 7

The value of capacitive reactance is given by

Question # 8

In metal detector, we use.

Question # 9

The unit of impedance is

Question # 10

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

Question # 11

A resistance frequency the impedance of RLC parallel circuit is.

Question # 12

SI unit of reactance is.

Question # 13

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 14

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

Question # 15

The peak to peak value of alternating voltage is

Question # 16

The combined effect of resistance and reactance in circuit is called:

Question # 17

The effective value of any sinusoidal alternating current or voltage is

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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 A.C circuit of inductor which one is true
A. Voltage leads current by phase angle π/2
B. Voltage lags current by π/2
C. Current leads voltage by π/2
D. Both remain in phase
2 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L
3 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
4 The effective value of any sinusoidal alternating current or voltage is
D. None of the above
5 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
6 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
7 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
8 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
9 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
10 High frequency radio wave is called as
A. Fluctuate
B. Carrier wave
C. Matter wave
D. Mechanical wave

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