ECAT Pre Computer Science Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 16 Alternating Current

Try The MCQ's Test For ECAT Physics Chapter 16 Alternating Current

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ECAT Physics Chapter 16 Alternating Current

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Question # 1

During each cycle, alternating voltage reaches a peak value

Question # 2

The r.m.s. value of alternating current is equal to its maximum value at angle of

Question # 3

The alternative voltage of current is actually measured by:

Question # 4

The power factor of resonant series circuit is

Question # 5

Conversion of alternating current into direct current is called

Question # 6

The highest value reached by the voltage or current:

Question # 7

Peak value of alternative current is:

Question # 8

Average value of A.C voltage during one cycle is

Question # 9

If we connected the ordinary DC ammeter to measure alternating current, it would measure its:

Question # 10

In a transistor, if the central region is n-type, then this type of transistor is known as

Question # 11

Alternating current can be transmitted:

Question # 12

The magnitude of alternative voltage V:

Question # 13

For a n-p-n transistor, the conventional current equation can be written as

Question # 14

A sinusoidally alternating voltage or current can be graphically represented by a:

Question # 15

The basic circuit element in A.C. circuits are:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 Most OP-AMP operates with
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
2 Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
A. Peak value
B. RMS value
C. Instantaneous value
D. Peak-to-peak value
3 If we connect a A.C. volt meter to read A.C. voltage, It would read its:
A. RMS value
B. Instantaneous value
C. Valued average over a cycle
D. Zero
4 The r.m.s. value of alternating current is equal to its maximum value at angle of
A. 60°
B. 45°
C. 30°
D. 90°
5 Average value of A.C voltage during one cycle is
A. 1
B. Zero
C. Maximum
D. Variable
6 During the positive half-cycle in the half-wave rectification,the diode
A. does not conduct
B. conducts
C. either of these
D. neither of these
7 Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
8 A P-N juction or semiconductor diode cannot be used as
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
9 During each cycle, alternating voltage reaches a peak value
A. One time
B. Two times
C. Four times
D. A number of times depending on the frequency
10 An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
A. 3525.0 volts
B. 35.35 volts
C. 353.5 volts
D. 3.535 volts

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