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

The slope of q-t curve at any instant of time gives.

Question # 2

XL=

Question # 3

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

Question # 4

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

Question # 5

At resonance frequency, the impedance of RLC series circuit is.

Question # 6

The wave form of alternating voltage is a

Question # 7

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

Question # 8

A resistance frequency the impedance of RLC parallel circuit is.

Question # 9

Phase difference between V and I of an A.C through resistor is.

Question # 10

The internal resistance of a capacitor is called:

Question # 11

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

Question # 12

In case of capacitor, the unit of reactance is

Question # 13

Direct current can not flow through.

Question # 14

In a pure inductive A.C. circuit the current.

Question # 15

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

Question # 16

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

Question # 17

The natural frequency of L.C circuit is equal to

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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 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these
2 For electromagnetic waves, Maxwell generalized
A. Gauses law for magnetism
B. Gauses law for eletricity
C. Fradays law
D. Amperes law
3 Power dissipation in A.C circuit is expressed as:
A. P =Irms x Vrms Sinθ
B. IxVCosθ
C. IrmsxVrmsCosθ
D. Irms x Vrms Sin2θ
4 In case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other
5 The flow of D.C current is opposed by
A. Resistor
B. Induction
C. Capacitor
D. All of these
6 The condition of resonance is:
A. XL = 1/2 Xc
B. XL = Xc
C. Xc = 4x2
D. None of above
7 The unit of impedance is
A. Farad
B. Henry
C. Tesla
D. Ohm
8 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
9 If Vrms be the root mean square value of emf then its peak to peak value is given by
10 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

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