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

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

Question # 2

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

Question # 3

In RLC circuit the energy is dissipated in

Question # 4

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

Question # 5

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

Question # 6

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

Question # 7

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

Question # 8

The highest value reached by the voltage or current is one cycle is called:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Radio frequency choke is

Question # 13

The resonance frequency is given by:

Question # 14

Electro magnetic waves emitted from radio antenna are.

Question # 15

The reactance of inductor depends upon

Question # 16

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

Question # 17

In three phase voltage across any two lines is about.

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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 The internal resistance of a capacitor is called:
A. Impedance
B. Resistance
C. Reactance
D. Conductance
2 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
3 The velocity of an oscillating charge as it moves to and fro along a wire is.
A. Changing
B. Constant
C. Infinite
D. zero
4 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
5 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
6 The inductive reactance of a coil is direction proportional to.
A. Inductance
B. Resistance
C. Frequency of A.C.
D. Both frequency of A.C. and inductance
7 The circuit in which current and voltage are in phase, the power factor is:
A. Zero
B. 1
C. -1
D. 2
8 The electromagnetic spectrum contains
A. Radio waves
B. X-rays
C. Microwaves
D. All of these
9 X1is low for low frequency Fy but Xc is.
A. Zero
B. Low
C. High
D. Same is H
10 At resonance, the behavior of R-L-C series circuit is.
A. Resistive
B. Capacitive
C. Inductive
D. Modulative

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