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

Question # 2

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

Question # 3

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

Question # 4

Resistance of choke is

Question # 5

The circuit which compares the two voltages is.

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The internal resistance of a capacitor is called:

Question # 10

X1is low for low frequency Fy but Xc is.

Question # 11

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

Question # 12

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

Question # 13

At resonance, the behavior of R-L-C series circuit is.

Question # 14

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

Question # 15

The sum of positive and negative peak value called.

Question # 16

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

Question # 17

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

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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 three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
2 Power dissipated in a pure inductor is.
A. Large
B. Small
C. Infinite
D. Zero
3 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
4 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
5 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
6 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
7 The velocity of an oscillating charge as it moves to and fro along a wire is.
A. Changing
B. Constant
C. Infinite
D. zero
8 Power dissipation is a pure inductive or in a pure capacitance circuit is:
A. 106
B. 0
C. 10
D. Maximum
9 The device which allows only the continuous flow of AC through it is.
A. Inductor
B. Battery
C. Thermistor
D. Capacitor
10 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

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