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 reactance is the ratio of

Question # 2

The sum of positive and negative peak value called.

Question # 3

The AC system is preferred to DC system because:

Question # 4

The A.M. transmission frequencies range from

Question # 5

The internal resistance of a capacitor is called:

Question # 6

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

Question # 7

In case of A.C. through resistor V and I are

Question # 8

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 9

The velocity of an oscillating charge as it moves to and fro along a wire is.

Question # 10

Unit of impedance is:

Question # 11

During each cycle A.C. voltage reaches a peak value.

Question # 12

Main reason for world wide use of A.C. is

Question # 13

Power dissipation is a pure inductive or in a pure capacitance circuit is:

Question # 14

A resistance frequency the impedance of RLC parallel circuit is.

Question # 15

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

Question # 16

The mean value of A.C. in a cycle is.

Question # 17

An alternating quantity (voltage or current) is completely known if we know its:

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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 main use of A.C is
A. Minimum line losses
B. Long distance transmission
C. Stepping up to required voltage only
D. Steeping down to required voltage only
2 The value of capacitive reactance is given by
A. Xc = VI
B. xc= 1/wc or xc= wL
C. xc= 1*wc or xc=Lw
D. All of above
3 XL=
A. 2πfL
B. 1/2πfL
C. 2πfL
D. fL/2π
4 The flow of D.C current is opposed by
A. Resistor
B. Induction
C. Capacitor
D. All of these
5 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)
6 The velocity of an oscillating charge as it moves to and fro along a wire is.
A. Changing
B. Constant
C. Infinite
D. zero
7 Power dissipation in A.C circuit is expressed as:
A. P =Irms x Vrms Sinθ
B. IxVCosθ
C. IrmsxVrmsCosθ
D. Irms x Vrms Sin2θ
8 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
9 Radio frequency choke is
A. Iron cored
B. Air Cored
C. Air as well as iron cored
D. None of these
10 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite

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