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 frequency modulation which factor changed.

Question # 2

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

Question # 3

The unit of impedance is

Question # 4

The phase difference between current and voltage in an inductive circuit is.

Question # 5

In chopke coil the resistance XL an resistance R are:

Question # 6

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

Question # 7

If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.

Question # 8

The inductive reactance of a coil is direction proportional to.

Question # 9

The circuit which compares the two voltages is.

Question # 10

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

Question # 11

The velocity of an oscillating charge as it moves to and fro along a wire is.

Question # 12

SI unit of reactance is.

Question # 13

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

Question # 14

Main reason for world wide use of A.C. is

Question # 15

The reactance is the ratio of

Question # 16

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

Question # 17

The electromagnetic spectrum contains

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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 During each cycle A.C. voltage reaches a peak value.
A. Once
B. Twice
C. Thrice
D. Four time
2 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
3 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
4 High frequency radio wave is called as
A. Fluctuate
B. Carrier wave
C. Matter wave
D. Mechanical wave
5 In a pure inductive A.C. circuit the current.
A. Lags behind voltage by 90 o
B. Leads the voltage by 90 o
C. In phase with voltage
D. Leads the voltage by 270 o
6 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
7 The basic circuit element in A.C. circuit which controls current.
A. Resistor only
B. Capacitor only
C. Inductor only
D. All of these
8 In Pakistan the frequency of A.C. supply is.
A. 50 Hz
B. 60 Hz
C. 45 Hz
D. 70 Hz
9 The unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm
10 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

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