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

The slope of q-t curve at any instant of time gives.

Question # 2

The A.M. transmission frequencies range from

Question # 3

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

Question # 4

A capacitor is perfectly insulator for:

Question # 5

The wave form of alternating voltage is a

Question # 6

The resonance frequency is given by:

Question # 7

The main reason for world wide use of A.C is because:

Question # 8

The phase difference between the current and voltage at resonce is:

Question # 9

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

Question # 10

In A.C circuit through a capacitor which one is:

Question # 11

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

Question # 12

Vrms =

Question # 13

In modulation, low frequency signal is known as

Question # 14

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

Question # 15

An in cudutor may store energy in

Question # 16

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 # 17

The natural frequency of L.C circuit is equal to

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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 In LR circiut which one of the following statements is correct?
A. L and R opposes each other
B. R value increases with frequency
C. The inductive reactance increases with frequency
D. The inductive reactance decreases with frequency
2 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these
3 In chopke coil the resistance XL an resistance R are:
A. XL=R
B. XL<<R
C. XL>>R
D. XL=∞
4 At resonance frequency, the impedance of RLC series circuit is.
A. Maximum
B. Minimum
C. Zero
D. Infinite
5 Electron vibrating 94,000 times each second will produce radio waves of frequency.
A. 94 Hz
B. 940 HZ
C. 94 Hz
D. 490 Hz
6 The sum of positive and negative peak value called.
A. R.M.S. value
B. P-P value
C. Peak value
D. Average value
7 Phase difference between V and I of an A.C through resistor is.
A. Zero Degree
B. 90 o
C. 80o
D. 120o
8 The phase difference between the current and voltage at resonce is:
A. 0
B. π
C. -π
D. π/2
9 In frequency modulation, the amplitude of carrier waves is
A. Increases
B. Remains constant
C. Decreases
D. None of these
10 In case of capacitor, the unit of reactance is
A. Farad
B. Ohm
C. Newton
D. All of these

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