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 flow of D.C current is opposed by

Question # 2

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

Question # 3

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 4

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

Question # 5

The velocity of an oscillating charge as it moves to and fro along a wire is.

Question # 6

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

Question # 7

Impedance is denoted by:

Question # 8

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

Question # 9

In Pakistan the frequency of A.C. supply is.

Question # 10

In A.C circuit of inductor which one is true

Question # 11

The resonance frequency is given by:

Question # 12

Power dissipation is a pure inductive or in a pure capacitance circuit is:

Question # 13

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

Question # 14

In frequency modulation which factor changed.

Question # 15

High frequency radio wave is called as

Question # 16

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

Question # 17

XL=

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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 If Vrms be the root mean square value of emf then its peak to peak value is given by
2 In A.C circuit through a capacitor which one is:
A. Current leads voltage by 90∘
B. Current lags behind voltage by 90∘
C. Both will be in phase
D. None of above 
3 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
4 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
5 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
6 In modulation, low frequency signal is known as
A. Carrier wave
B. fluctuated signal
C. Modulated carrier signal
D. Modulation signal
7 The effective value of any sinusoidal alternating current or voltage is
D. None of the above
8 The peak to peak value of alternating voltage is
A. 2Vo
B. Vo
D. None of these
9 The peak value of alternating current is 5√2 A. The mean square value of current will be:
A. 5A
B. 2.5A
C. 5√2A
D. 52
10 The velocity of an oscillating charge as it moves to and fro along a wire is.
A. Changing
B. Constant
C. Infinite
D. zero

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