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

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Question # 1

In chopke coil the resistance XL an resistance R are:

Question # 2

The reactance is the ratio of

Question # 3

The power factor of RL series circuit is.

Question # 4

The sum of positive and negative peak value called.

Question # 5

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

Question # 6

The combined effect of resistance and reactance is knows as.

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

The device which allows only the continuous flow of AC through it is.

Question # 11

Choke consumes extremely small

Question # 12

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

Question # 13

The peak value of A.C source is 20 A, then its rms value will be.

Question # 14

In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is.

Question # 15

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

Question # 16

The A.M. transmission frequencies range from

Question # 17

when an inductor comes close to a metallic object, its inductance is.

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
2 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?
A. 4 times
B. 1/4 times
C. 8 times
D. 2 times
3 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
4 100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is.
A. 30.8 Ohm
B. 31.8 Ohm
C. 34.8 Ohm
D. 40 Ohm
5 The combined effect of resistance and reactance is knows as.
A. Inductance
B. Conductance
C. Resistance
D. Impedance
6 In modulation, low frequency signal is known as
A. Carrier wave
B. fluctuated signal
C. Modulated carrier signal
D. Modulation signal
7 An A.C. voltmeter reads 220 V, its peak value will be
A. 225 V
B. 240 V
C. 311.12 V
D. 300 V
8 An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately
A. 50 Hz
B. 100 Hz
C. 80 Hz
D. 120 Hz
9 Resistance of choke is
A. zero
B. Large
C. Very small
D. Infinite
10 Which consumes small power.
A. Inductor
B. Resistor
C. Motor
D. All of these

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