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

Question # 2

The power factor of RL series circuit is.

Question # 3

The combined effect of resistance and reactance is knows as.

Question # 4

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

Question # 5

In three phase A.C supply coils are inclined at an angle of.

Question # 6

In A.C circuit of inductor which one is true

Question # 7

The unit of impedance is

Question # 8

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

Question # 9

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

Question # 10

Direct current can not flow through.

Question # 11

In modulation, low frequency signal is known as

Question # 12

The main use of A.C is

Question # 13

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

Question # 14

The effective value of any sinusoidal alternating current or voltage is

Question # 15

High frequency radio wave is called as

Question # 16

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

Question # 17

The flow of D.C current is opposed by

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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 For electromagnetic waves, Maxwell generalized
A. Gauses law for magnetism
B. Gauses law for eletricity
C. Fradays law
D. Amperes law
2 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
3 The condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
4 In modulation, low frequency signal is known as
A. Carrier wave
B. fluctuated signal
C. Modulated carrier signal
D. Modulation signal
5 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
6 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
7 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
8 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
9 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?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times
10 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite

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  • Butt

    Butt

    31 Mar 2020

    I want to give some test

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  • Rimsha

    Rimsha

    20 Oct 2019

    I am rimsha from kabirwala l am not belong to Lahore plz correct my city name

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    atiyahassan

    20 Nov 2017

    aoa ....how to download it

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    zia

    28 Jun 2016

    thankx

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