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

Unit of impedance is:

Question # 2

At high frequency, the current through a capacitor is

Question # 3

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

Question # 4

In LR circiut which one of the following statements is correct?

Question # 5

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

Question # 6

In frequency modulation which factor changed.

Question # 7

The AC system is preferred to DC system because:

Question # 8

In three phase A.C supply coils are inclined at an angle of.

Question # 9

Which consumes small power.

Question # 10

The A.M. transmission frequencies range from

Question # 11

An electromagnetic wave goes from air to glass which of the following does not change?

Question # 12

The unit of impedance is.

Question # 13

In metal detector, we use.

Question # 14

Power dissipation in A.C circuit is expressed as:

Question # 15

The internal resistance of a capacitor is called:

Question # 16

The effective value of any sinusoidal alternating current or voltage is

Question # 17

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

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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 mean value of A.C. in a cycle is.
A. 1
B. 0
C. I2
D. Nil
2 100 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
3 The power factor of RL series circuit is.
A. 0
B. 1
C. Less then 1
D. More than one
4 Choke consumes extremely small
A. Current
B. Charge
C. Power
D. Potential
5 The combined effect of resistance and reactance in circuit is called:
A. Impedance
B. Inductance
C. Capacitance
D. None of above
6 A resistance frequency the impedance of RLC parallel circuit is.
A. Zero
B. Infinite
C. Maximum
D. Minimum
7 The AC system is preferred to DC system because:
A. AC voltage can be easily changed in magnitude
B. DC motor angular velocity is affected badly
C. High voltage AC transmission is less efficient
D. Domestic appliance require AC voltage for their operation
8 The most common source of an A.C. Voltage is.
A. Motor
B. Cell
C. Generator
D. Thermo couple
9 The reactance of inductor depends upon
A. L
D. All of the above
10 Unit of impedance is:
A. Ohm
B. Ohm-1
C. no unit
D. Ohm m-1

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