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 effective value of any sinusoidal alternating current or voltage is

Question # 2

For electromagnetic waves, Maxwell generalized

Question # 3

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

Question # 4

Vrms =

Question # 5

A capacitor is perfectly insulator for:

Question # 6

In frequency modulation which factor changed.

Question # 7

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

Question # 8

The wave form of alternating voltage is a

Question # 9

X1is low for low frequency Fy but Xc is.

Question # 10

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

Question # 11

The unit of impedance is.

Question # 12

In RLC circuit the energy is dissipated in

Question # 13

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

Question # 14

In case of capacitor, the unit of reactance is

Question # 15

Power dissipation in A.C circuit is expressed as:

Question # 16

Resistance of choke is

Question # 17

At high frequency, the current through a capacitor 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 The highest value reached by the voltage or current is one cycle is called:
A. Peak to peak value
B. Peak value
C.
Instantaneous value
D. Root mean square value
2 If Vrms be the root mean square value of emf then its peak to peak value is given by
3 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
4 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
5 The device which allows only the flow of D.C. is.
A. Capacitors
B. transformer
C. Inductor
D. Generator
6 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
7 In purely resistive A.C circuit, instantaneous value of voltage and current:
A. Current lags behind voltage
B. Current leads voltage by π/2
C. Both are in Phase
D. Voltage leads current by Pase θ=π/2
8 The power factor of RL series circuit is.
A. 0
B. 1
C. Less then 1
D. More than one
9 An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
A. 50 Hz
B. 100 Hz
C. 80 Hz
D. 120 Hz
10 In A.C circuit of inductor which one is true
A. Voltage leads current by phase angle π/2
B. Voltage lags current by π/2
C. Current leads voltage by π/2
D. Both remain in phase

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    Butt

    31 Mar 2020

    I want to give some test

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    Rimsha

    20 Oct 2019

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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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