2nd Year Physics Chapter 16 Online MCQ Test for 12th Class Physics Chapter 16 (Alternating Current)

ICS Part 2 Physics
Chapter 16 Test

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

00:00
Question # 1

Unit of impedance is:

Question # 2

The condition of resonance is:

Question # 3

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

Question # 4

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

Question # 5

The electromagnetic spectrum contains

Question # 6

The main use of A.C is

Question # 7

In frequency modulation which factor changed.

Question # 8

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

Question # 9

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

Question # 10

Phase difference between V and I of an A.C through resistor is.

Question # 11

Resistance of choke is

Question # 12

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

Question # 13

In A.C circuit of inductor which one is true

Question # 14

The main reason for world wide use of A.C is because:

Question # 15

The reactance is the ratio of

Question # 16

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

Question # 17

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

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16th Chapter

ICS 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 The unit of impedance is
A. Farad
B. Henry
C. Tesla
D. Ohm
2 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
3 The peak value of alternating current is 5√2 A. The mean square value of current will be:
A. 5A
B. 2.5A
C. 5√2A
D. 52
4 An electromagnetic wave goes from air to glass which of the following does not change?
A. Radio waves
B. X-rays
C. Ultra violet radiation
D. Ultra sond waves
5 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
6 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
7 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
8 Average value of current and voltage over a complete cycle is.
A. Positive
B. Negative
C. Zero
D. Infinite
9 In three phase A.C. generator the phase difference between each pair of coil is.
A. 45o
B. 90o
C. 120o
D. 60o
10 A capacitor is perfectly insulator for:
A. Direct current
B. Alternating current
C. Direct as well as alternating current
D. None of these

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