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

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Question # 1

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

Question # 2

Xc =

Question # 3

In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.

Question # 4

The main use of A.C is

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The combined effect of resistance and reactance is knows as.

Question # 9

The inductive reactance of a coil is direction proportional to.

Question # 10

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

Question # 11

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

Question # 12

The most common source of an A.C. Voltage is.

Question # 13

In three phase A.C supply coils are inclined at an angle of.

Question # 14

The unit of impedance is

Question # 15

The unit of impedance is.

Question # 16

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

Question # 17

The condition of resonance 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 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 The Basic circuit element in a D.C. circuits which controls the current and voltage is
A.
Resistor
B. Inductor
C.
Capisitor
D. Transistor
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 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
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 The internal resistance of a capacitor is called:
A. Impedance
B. Resistance
C. Reactance
D. Conductance
7 Direct current can not flow through.
A. Inductor
B. Resistor
C. Transistor
D. Capacitor
8 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
9 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative
10 The resonance frequency is given by:
A. fr = 2π√LC
B. fr = 1/2πLC
C. fr = 1/ 2π√LC
D. f1 = 1/ 2πC√L

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