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

Xc =

Question # 2

In frequency modulation which factor changed.

Question # 3

In modulation, low frequency signal is known as

Question # 4

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

Question # 5

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

Question # 6

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

Question # 7

The device which allows only the flow of D.C. is.

Question # 8

In AC system we generate sine wave form because:

Question # 9

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

Question # 10

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

Question # 11

The effective value of any sinusoidal alternating current or voltage is

Question # 12

In RLC circuit the energy is dissipated in

Question # 13

The phase difference between the current and voltage at resonce is:

Question # 14

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 # 15

At high frequency, the current through a capacitor is

Question # 16

In pure capacitor A.C. circuit, the current I and charge q are.

Question # 17

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

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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 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
2 In metal detector, we use.
A. L-C circuit
B. R-L circuit
C. R-C circuit
D. RLC series circuit
3 The slope of q-t curve at any instant of time gives.
A. Voltage
B. Current
C. Charge
D. Botha a and b
4 The highest value reached by the voltage or current in one cycle is called.
A. Peak ot peak value
B. Peak value
C. Instantaneous value
D. Root mean square value
5 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
6 In frequency modulation which factor changed.
A. Amplitude of charge carriers
B. Frequency of charge carriers
C. Amplitude of signal
D. Frequency of signal
7 In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.
A. Maximum
B. Minimum
C. Zero
D. Negative
8 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
9 The combined effect of resistance and reactance is knows as.
A. Inductance
B. Conductance
C. Resistance
D. Impedance
10 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

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