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 inductive reactance of a coil is direction proportional to.

Question # 3

The unit of impedance is.

Question # 4

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

Question # 5

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

Question # 6

Power dissipation in A.C circuit is expressed as:

Question # 7

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

Question # 8

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

Question # 9

The natural frequency of L.C circuit is equal to

Question # 10

In RLC circuit the energy is dissipated in

Question # 11

An in cudutor may store energy in

Question # 12

The internal resistance of a capacitor is called:

Question # 13

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

Question # 14

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

Question # 15

In case of capacitor, the unit of reactance is

Question # 16

At resonance, the behavior of R-L-C series circuit is.

Question # 17

XL=

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 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
2 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
3 In chopke coil the resistance XL an resistance R are:
A. XL=R
B. XL<<R
C. XL>>R
D. XL=∞
4 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
5 The A.M. transmission frequencies range from
A. 540 KHz to 1000 KHz
B. 540 Khz to 1600 KHz
C. 520 KHz TO 1600 KHz
D. 520 KHz TO 1400 KHz
6 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
7 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o
8 The highest value reached by the voltage or current in one cycle is called.
A. Peak ot peak value
B. Peak value
C. Instantaneous value
D. Root mean square value
9 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
10 The peak value of alternating current is 5√2 A. The mean square value of current will be:
A. 5A
B. 2.5A
C. 5√2A
D. 52

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