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

At high frequency, the current through a capacitor is

Question # 2

In AC system we generate sine wave form because:

Question # 3

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

Question # 4

The circuit which compares the two voltages is.

Question # 5

A capacitor is perfectly insulator for:

Question # 6

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

Question # 7

The sum of positive and negative peak value called.

Question # 8

In three phase voltage across any two lines is about.

Question # 9

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

Question # 10

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 # 11

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

Question # 12

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

Question # 13

For electromagnetic waves, Maxwell generalized

Question # 14

Resistance of choke is

Question # 15

The A.M. transmission frequencies range from

Question # 16

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

Question # 17

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

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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 Impedance is denoted by:
A. A 
B. Z
C. P
D. Q
2 The phase difference between current and voltage in an inductive circuit is.
A. zero
B. 90 o
C. 180 o
D. 45o
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 phase angle of a series RLC circult at resonant frequency is
A. 1/2
B. sigma
C. Zero
D. sigma /4
5 In case of A.C. through resistor V and I are
A. At 0 o with each other
B. At 180 o with each other
C. At 90 o with each other
D. At 270 o with each other
6 The unit of impedance is.
A. Henry
B. Hertz
C. Ampere
D. Ohm
7 The circuit which compares the two voltages is.
A. LDR
B. Sensor
C. Comparator
D. Logic gate
8 when an inductor comes close to a metallic object, its inductance is.
A. Decreased
B. Increased
C. Becomes half
D. Becomes 4 times
9 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
10 The main use of A.C is
A. Minimum line losses
B. Long distance transmission
C. Stepping up to required voltage only
D. Steeping down to required voltage only

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