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

In purely resistive A.C circuit, instantaneous value of voltage and current:

Question # 2

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

Question # 3

Direct current can not flow through.

Question # 4

Resistance of choke is

Question # 5

In three phase voltage across any two lines is about.

Question # 6

In frequency modulation which factor changed.

Question # 7

Power dissipated in a pure inductor is.

Question # 8

The unit of impedance is.

Question # 9

The resonance frequency is given by:

Question # 10

Choke consumes extremely small

Question # 11

The power factor of RL series circuit is.

Question # 12

The combined effect of resistance and reactance is knows as.

Question # 13

In RLC circuit the energy is dissipated in

Question # 14

In chopke coil the resistance XL an resistance R are:

Question # 15

At high frequency, the current through a capacitor is

Question # 16

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

Question # 17

The value of capacitive reactance is given by

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The device which allows only the continuous flow of AC through it is.
A. Inductor
B. Battery
C. Thermistor
D. Capacitor
2 Power dissipated in a pure inductor is.
A. Large
B. Small
C. Infinite
D. Zero
3 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these
4 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π
5 The power factor of RL series circuit is.
A. 0
B. 1
C. Less then 1
D. More than one
6 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
7 In chopke coil the resistance XL an resistance R are:
A. XL=R
B. XL<<R
C. XL>>R
D. XL=∞
8 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
9 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
10 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth

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