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

In case of A.C. through resistor V and I are

Question # 2

In modulation, low frequency signal is known as

Question # 3

In AC system we generate sine wave form because:

Question # 4

Xc =

Question # 5

In A.C circuit of inductor which one is true

Question # 6

The sum of positive and negative peak value called.

Question # 7

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

Question # 8

Radio frequency choke is

Question # 9

If Io is the peak value of current, then its root mean square value is given by

Question # 10

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

Question # 11

Impedance is denoted by:

Question # 12

In frequency modulation, the amplitude of carrier waves is

Question # 13

The most common source of an A.C. Voltage is.

Question # 14

A resistance frequency the impedance of RLC parallel circuit is.

Question # 15

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

Question # 16

The internal resistance of a capacitor is called:

Question # 17

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

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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 case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other
2 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
3 The condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
4 In purely resistive A.C circuit, instantaneous value of voltage and current:
A. Current lags behind voltage
B. Current leads voltage by π/2
C. Both are in Phase
D. Voltage leads current by Pase θ=π/2
5 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
6 Electro magnetic waves emitted from radio antenna are.
A. Stationary
B. Longitudinal
C. Transvers
D. Both a and b
7 At high frequency, the current through a capacitor is
A. Small
B. Infinity
C. Zero
D. Large
8 In a pure inductive A.C. circuit the current.
A. Lags behind voltage by 90 o
B. Leads the voltage by 90 o
C. In phase with voltage
D. Leads the voltage by 270 o
9 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L
10 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time

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