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

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

Question # 2

XL=

Question # 3

The combined effect of resistance and reactance is knows as.

Question # 4

In an LRC circiut, the capacitance is made one-fourth, when an resonance . Then what should be change in inductance, so that the circuit remain in resonance?

Question # 5

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

Question # 6

The natural frequency of L.C circuit is equal to

Question # 7

The resonance frequency is given by:

Question # 8

The electromagnetic spectrum contains

Question # 9

The circuit which compares the two voltages is.

Question # 10

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

Question # 11

The inductive reactance of a coil is direction proportional to.

Question # 12

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

Question # 13

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

Question # 14

The sum of positive and negative peak value called.

Question # 15

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

Question # 16

Vrms =

Question # 17

In frequency modulation, the amplitude of carrier waves is

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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 At high frequency, the current through a capacitor is
A. Small
B. Infinity
C. Zero
D. Large
2 In frequency modulation, the amplitude of carrier waves is
A. Increases
B. Remains constant
C. Decreases
D. None of these
3 If the frequency of A.C. supplied is doubled then the capacitive reactance becomes.
A. Half
B. Two
C. Four times
D. One fourth
4 In the capacitive circuit of A.C. quantity when q= 0 the slope of q-t curve is.
A. Maximum
B. Minimum
C. Zero
D. Negative
5 In three phase voltage across any two lines is about.
A. 220 V
B. 230 V
C. 400 V
D. 430 V
6 The expression P = VI hold only when current and voltage are.
A. In phase
B. Out of phase
C. At right angle to each other
D. At angle of 120 o
7 SI unit of reactance is.
A. Ohm
B. Mho
C. Farad
D. Henry
8 In three phase A.C supply coils are inclined at an angle of.
A. 0o
B. 90o
C. 120o
D. 80o
9 An in cudutor may store energy in
A. Its magnetic field
B. Its coil
C. Its electric field
D. A neighboring circuit
10 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite

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