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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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 16 Online MCQ's Test"

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Physics ICS Part 2 Chapter 16 Online MCQ's Test

00:00
Question # 1

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

Question # 2

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

Question # 3

In frequency modulation, the amplitude of carrier waves is

Question # 4

The sum of positive and negative peak value called.

Question # 5

In modulation, low frequency signal is known as

Question # 6

If Vrms be the root mean square value of emf then its peak to peak value is given by

Question # 7

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

Question # 8

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

Question # 9

In metal detector, we use.

Question # 10

The circuit in which current and voltage are in phase, the power factor is:

Question # 11

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

Question # 12

Radio frequency choke is

Question # 13

In three phase A.C. generator the phase difference between each pair of coil is.

Question # 14

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

Question # 15

The inductive reactance of a coil is direction proportional to.

Question # 16

The circuit which compares the two voltages is.

Question # 17

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

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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 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
2 In case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other
3 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
4 The highest value reached by the voltage or current is one cycle is called:
A. Peak to peak value
B. Peak value
C.
Instantaneous value
D. Root mean square value
5 The slope of q-t curve at any instant of time gives.
A. Voltage
B. Current
C. Charge
D. Botha a and b
6 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
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 Resistance of choke is
A. zero
B. Large
C. Very small
D. Infinite
9 An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:
A. 50 Hz
B. 25Hz
C. 100 Hz
D. 75 Hz
10 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite

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