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 device which allows only the flow of D.C. is.

Question # 2

An A.C. voltmeter reads 220 V, its peak value will be

Question # 3

The A.M. transmission frequencies range from

Question # 4

The phase difference between the current and voltage at resonce is:

Question # 5

In A.C circuit of inductor which one is true

Question # 6

The internal resistance of a capacitor is called:

Question # 7

The reactance is the ratio of

Question # 8

In LR circiut which one of the following statements is correct?

Question # 9

The sum of positive and negative peak value called.

Question # 10

High frequency radio wave is called as

Question # 11

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

Question # 12

In case of capacitor, the unit of reactance is

Question # 13

The circuit which compares the two voltages is.

Question # 14

The condition of resonance is:

Question # 15

Power dissipation in A.C circuit is expressed as:

Question # 16

Resistance of choke is

Question # 17

Xc =

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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 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
2 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
3 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
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 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
6 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
7 The unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm
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 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
10 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?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times

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