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

00:00
Question # 1

In frequency modulation which factor changed.

Question # 2

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

Question # 3

Direct current can not flow through.

Question # 4

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

If Vrms be the root mean square value of emf then its peak to peak value is given by

Question # 9

A resistance frequency the impedance of RLC parallel circuit is.

Question # 10

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

Question # 11

In modulation, low frequency signal is known as

Question # 12

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

Question # 13

In LR circiut which one of the following statements is correct?

Question # 14

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

Question # 15

An in cudutor may store energy in

Question # 16

The power factor of RL series circuit is.

Question # 17

The phase difference between current and voltage in an inductive circuit 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 In AC system we generate sine wave form because:
A. It san be easily draw
B. It produces least disturbance in electrical circuits
C. It is nature standard
D. Other waves cannot be produced easily
2 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
3 The natural frequency of L.C circuit is equal to
4 The main use of A.C is
A. Minimum line losses
B. Long distance transmission
C. Stepping up to required voltage only
D. Steeping down to required voltage only
5 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
6 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
7 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential
8 When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.
A. 100 Ohm
B. 10 Ohm
C. 1000 Ohm
D. 1 Ohm
9 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
10 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms

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