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

Which consumes small power.

Question # 2

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

Question # 3

The wave form of alternating voltage is a

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

In chopke coil the resistance XL an resistance R are:

Question # 9

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

Question # 10

The reactance of inductor depends upon

Question # 11

Direct current can not flow through.

Question # 12

The A.M. transmission frequencies range from

Question # 13

Electro magnetic waves emitted from radio antenna are.

Question # 14

The unit of impedance is.

Question # 15

In modulation, low frequency signal is known as

Question # 16

The natural frequency of L.C circuit is equal to

Question # 17

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

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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 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
2 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
3 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
4 The effective value of any sinusoidal alternating current or voltage is
D. None of the above
5 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
6 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms
7 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
8 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these
9 The AC system is preferred to DC system because:
A. AC voltage can be easily changed in magnitude
B. DC motor angular velocity is affected badly
C. High voltage AC transmission is less efficient
D. Domestic appliance require AC voltage for their operation
10 The circuit in which current and voltage are in phase, the power factor is:
A. Zero
B. 1
C. -1
D. 2

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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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