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 A.C circuit of inductor which one is true

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

SI unit of reactance is.

Question # 6

A capacitor is perfectly insulator for:

Question # 7

The peak to peak value of alternating voltage is

Question # 8

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

Question # 9

High frequency radio wave is called as

Question # 10

Resistance of choke is

Question # 11

The phase angle of a series RLC circult at resonant frequency is

Question # 12

At high frequency the value of reactance of capacitor will be.

Question # 13

In frequency modulation which factor changed.

Question # 14

The reactance is the ratio of

Question # 15

If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.

Question # 16

The unit of impedance is

Question # 17

The wave form of alternating voltage is a

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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 Power dissipation is a pure inductive or in a pure capacitance circuit is:
A. 106
B. 0
C. 10
D. Maximum
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 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
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 angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
6 Resistance of choke is
A. zero
B. Large
C. Very small
D. Infinite
7 The Basic circuit element in a D.C. circuits which controls the current and voltage is
A.
Resistor
B. Inductor
C.
Capisitor
D. Transistor
8 The basic circuit element in A.C. circuit which controls current.
A. Resistor only
B. Capacitor only
C. Inductor only
D. All of these
9 In LR circiut which one of the following statements is correct?
A. L and R opposes each other
B. R value increases with frequency
C. The inductive reactance increases with frequency
D. The inductive reactance decreases with frequency
10 The unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm

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