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 value of capacitive reactance is given by

Question # 2

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

Question # 3

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

Question # 4

Direct current can not flow through.

Question # 5

The peak value of A.C source is 20 A, then its rms value will be.

Question # 6

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

Question # 7

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

Question # 8

The most common source of an A.C. Voltage is.

Question # 9

In Series resonance circuit the impedance of circuit art resonance frequency, is

Question # 10

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

Question # 11

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

Question # 12

The power factor of RL series circuit is.

Question # 13

XL=

Question # 14

At high frequency, the current through a capacitor is

Question # 15

The circuit which compares the two voltages is.

Question # 16

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

Question # 17

The phase angle of a series RLC circult at resonant frequency is

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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 chopke coil the resistance XL an resistance R are:
A. XL=R
B. XL<<R
C. XL>>R
D. XL=∞
2 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
3 The phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
4 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
5 Average value of current and voltage over a complete cycle is.
A. Positive
B. Negative
C. Zero
D. Infinite
6 An A.C. voltmeter reads 220 V, its peak value will be
A. 225 V
B. 240 V
C. 311.12 V
D. 300 V
7 In LR circiut which one of the following statements is correct?
A. L and R opposes each other
B. R value increases with frequency
C. The inductive reactance increases with frequency
D. The inductive reactance decreases with frequency
8 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
9 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
10 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1

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