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 peak value of A.C source is 20 A, then its rms value will be.

Question # 2

An A.C. voltmeter reads 220 V, its peak value will be

Question # 3

The phase difference between the current and voltage at resonce is:

Question # 4

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

Question # 5

In A.C circuit through a capacitor which one is:

Question # 6

In RLC circuit the energy is dissipated in

Question # 7

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

Question # 8

The unit of impedance is.

Question # 9

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

Question # 10

Xc =

Question # 11

The flow of D.C current is opposed by

Question # 12

when an inductor comes close to a metallic object, its inductance is.

Question # 13

The condition of resonance is:

Question # 14

Radio frequency choke is

Question # 15

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

Question # 16

The resonance frequency is given by:

Question # 17

In pure capacitor A.C. circuit, the current I and charge q are.

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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 Direct current can not flow through.
A. Inductor
B. Resistor
C. Transistor
D. Capacitor
3 If Io is the peak value of current, then its root mean square value is given by
B. 2 Io
C. Io
D. 0.7 Io
4 In three phase A.C supply coils are inclined at an angle of.
A. 0o
B. 90o
C. 120o
D. 80o
5 Electron vibrating 94,000 times each second will produce radio waves of frequency.
A. 94 Hz
B. 940 HZ
C. 94 Hz
D. 490 Hz
6 Average value of current and voltage over a complete cycle is.
A. Positive
B. Negative
C. Zero
D. Infinite
7 100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.
A. 30.8 Ohm
B. 31.8 Ohm
C. 34.8 Ohm
D. 40 Ohm
8 In case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other
9 The electromagnetic spectrum contains
A. Radio waves
B. X-rays
C. Microwaves
D. All of these
10 An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:
A. 50 Hz
B. 25Hz
C. 100 Hz
D. 75 Hz

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