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

The mean value of A.C. in a cycle is.

Question # 2

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

Question # 3

An electromagnetic wave goes from air to glass which of the following does not change?

Question # 4

Unit of impedance is:

Question # 5

The phase difference between current and voltage in an inductive circuit is.

Question # 6

The basic circuit element in A.C. circuit which controls current.

Question # 7

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

Question # 8

100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.

Question # 9

The internal resistance of a capacitor is called:

Question # 10

The expression P = VI hold only when current and voltage are.

Question # 11

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 # 12

In purely resistive A.C circuit, instantaneous value of voltage and current:

Question # 13

The value of capacitive reactance is given by

Question # 14

In frequency modulation which factor changed.

Question # 15

The unit of impedance is.

Question # 16

Choke consumes extremely small

Question # 17

Direct current can not flow through.

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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 capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
2 An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
A. 50 Hz
B. 100 Hz
C. 80 Hz
D. 120 Hz
3 The device which allows only the flow of D.C. is.
A. Capacitors
B. transformer
C. Inductor
D. Generator
4 If Vrms be the root mean square value of emf then its peak to peak value is given by
5 In three phase A.C. generator the phase difference between each pair of coil is.
A. 45o
B. 90o
C. 120o
D. 60o
6 The unit of impedance is
A. Farad
B. Henry
C. Tesla
D. Ohm
7 The wave form of alternating voltage is a
A. Cotangent curve
B. Cosine curve
C. Sine curve
D. Tangent curve
8 The highest value reached by the voltage or current is one cycle is called:
A. Peak to peak value
B. Peak value
C.
Instantaneous value
D. Root mean square value
9 The device which allows only the continuous flow of AC through it is.
A. Inductor
B. Battery
C. Thermistor
D. Capacitor
10 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

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