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

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

Question # 2

Average value of current and voltage over a complete cycle is.

Question # 3

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

Question # 4

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

Question # 5

SI unit of reactance is.

Question # 6

At high frequency, the current through a capacitor is

Question # 7

An electromagnetic wave goes from air to glass which of the following does not change?

Question # 8

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

Question # 9

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

Question # 10

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

Question # 11

Resistance of choke is

Question # 12

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

Question # 13

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

Question # 14

The internal resistance of a capacitor is called:

Question # 15

In case of capacitor, the unit of reactance is

Question # 16

In frequency modulation, the amplitude of carrier waves is

Question # 17

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

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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 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
2 At high frequency the value of reactance of capacitor will be.
A. Small
B. Zero
C. Large
D. Infinite
3 The slope of q-t curve at any instant of time gives.
A. Voltage
B. Current
C. Charge
D. Botha a and b
4 In three phase A.C. generator the phase difference between each pair of coil is.
A. 45o
B. 90o
C. 120o
D. 60o
5 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
6 If Vrms be the root mean square value of emf then its peak to peak value is given by
7 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
8 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L
9 An electromagnetic wave goes from air to glass which of the following does not change?
A. Radio waves
B. X-rays
C. Ultra violet radiation
D. Ultra sond waves
10 The effective value of any sinusoidal alternating current or voltage is
D. None of the above

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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

    atiyahassan

    20 Nov 2017

    aoa ....how to download it

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  • zia

    zia

    28 Jun 2016

    thankx

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