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

Question # 2

The wave form of alternating voltage is a

Question # 3

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

Question # 4

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

Question # 5

A capacitor is perfectly insulator for:

Question # 6

Choke consumes extremely small

Question # 7

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 # 8

In RLC circuit the energy is dissipated in

Question # 9

The combined effect of resistance and reactance in circuit is called:

Question # 10

Unit of impedance is:

Question # 11

The A.M. transmission frequencies range from

Question # 12

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

Question # 13

Radio frequency choke is

Question # 14

In Pakistan the frequency of A.C. supply is.

Question # 15

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

Question # 16

In chopke coil the resistance XL an resistance R are:

Question # 17

In frequency modulation which factor changed.

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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 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these
2 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
3 The internal resistance of a capacitor is called:
A. Impedance
B. Resistance
C. Reactance
D. Conductance
4 The main reason for world wide use of A.C is because:
A. It is very high power 
B. It can be transmitted over long distance
C. It is cheaper to use
D. ALl of above
5 Power dissipation in A.C circuit is expressed as:
A. P =Irms x Vrms Sinθ
B. IxVCosθ
C. IrmsxVrmsCosθ
D. Irms x Vrms Sin2θ
6 In modulation, low frequency signal is known as
A. Carrier wave
B. fluctuated signal
C. Modulated carrier signal
D. Modulation signal
7 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
8 The mean value of A.C. in a cycle is.
A. 1
B. 0
C. I2
D. Nil
9 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
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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