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

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

Question # 2

In three phase voltage across any two lines is about.

Question # 3

The inductive reactance of a coil is direction proportional to.

Question # 4

Electron vibrating 94,000 times each second will produce radio waves of frequency.

Question # 5

In a pure inductive A.C. circuit the current.

Question # 6

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

Question # 7

The expression P = VI hold only when current and voltage are.

Question # 8

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

Question # 9

If Io is the peak value of current, then its root mean square value is given by

Question # 10

The flow of D.C current is opposed by

Question # 11

The Basic circuit element in a D.C. circuits which controls the current and voltage is

Question # 12

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

Question # 13

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

Question # 14

In A.C circuit of inductor which one is true

Question # 15

During each cycle A.C. voltage reaches a peak value.

Question # 16

Radio frequency choke is

Question # 17

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

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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 Vrms =
A. 0.7V
B.
0.07V
C. 0.007V
D. 0.75V
2 The unit of impedance is
A. Farad
B. Henry
C. Tesla
D. Ohm
3 In RLC circuit the energy is dissipated in
A. R only
B. R and L
C. R and C
D. L and C
4 The peak value of A.C source is 20 A, then its rms value will be.
A. 14.1 A
B. 10 A
C. 20 A
D. 28.2 A
5 Xc =
A. 1/2πfc
B. 2πfc
C. 2π/fc
D. fc/2π
6 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
7 The natural frequency of L.C circuit is equal to
8 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1
9 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
10 Main reason for world wide use of A.C. is
A. It is cheaper
B. Transmitted
C. Botha a and b
D. Reaches in short time

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