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

Power dissipated in a pure inductor is.

Question # 2

High frequency radio wave is called as

Question # 3

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

Question # 4

An in cudutor may store energy in

Question # 5

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

Question # 6

For electromagnetic waves, Maxwell generalized

Question # 7

The Basic circuit element in a D.C. circuits which controls the current and voltage is

Question # 8

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

Question # 9

The power factor of RL series circuit is.

Question # 10

Unit of impedance is:

Question # 11

The condition of resonance is:

Question # 12

XL=

Question # 13

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

Question # 14

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?

Question # 15

The flow of D.C current is opposed by

Question # 16

Power dissipation in A.C circuit is expressed as:

Question # 17

In RLC circuit the energy is dissipated in

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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 An alternating quantity (voltage or current) is completely known if we know its:
A. Maximum
B. Frequency and phase
C. Effective value
D. Both (a) & (b)
2 In modulation, low frequency signal is known as
A. Carrier wave
B. fluctuated signal
C. Modulated carrier signal
D. Modulation signal
3 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these
4 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
5 In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.
A. 90o
B. 270o
C. 0o
D. 180o
6 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative
7 In a pure inductive A.C. circuit the current.
A. Lags behind voltage by 90 o
B. Leads the voltage by 90 o
C. In phase with voltage
D. Leads the voltage by 270 o
8 Vrms =
A. 0.7V∘
B.
0.07V∘
C. 0.007V∘
D. 0.75V∘
9 In A.C circuit through a capacitor which one is:
A. Current leads voltage by 90∘
B. Current lags behind voltage by 90∘
C. Both will be in phase
D. None of above 
10 The reactance is the ratio of
A. Vrms/Irms
B. Vrms x Irms
C. Irms/Vrms
D. Vmax x Vrms

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