ECAT Pre Engineering Physics Chapter 16 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 16 Alternating Current

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

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Physics ECAT Pre Engineering Chapter 16 Alternating Current

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Question # 1

The sum of positive and negative peak values is called:

Question # 2

The value of output resistance of OP-AMOP is of the order of

Question # 3

At resonance, the impedance of RLC series circuit is

Question # 4

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

Question # 5

The value of the input resistance of OP-AMP is of the order of

Question # 6

During the positive half-cycle in the half-wave rectification,the diode

Question # 7

The power factor of resonant series circuit is

Question # 8

The basic circuit elements of A.C circuit are

Question # 9

The average of A.C. current and voltage over a complete cycle is

Question # 10

The alternative voltage of current is actually measured by:

Question # 11

For normal operation of transistor, the batteries

Question # 12

A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at

Question # 13

In RLC series circuit, resonance occurs when

Question # 14

Transmitting antenna emits

Question # 15

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

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 In a transistor, if the central region is n-type, then this type of transistor is known as
A. n-p-n transistor
B. p-n-p transistor
C. either of these
D. none of these
3 In a normally biased n-p-n transistor, an electron c current IEflows from the
A. emitter into the base
B. collector into the base
C. base into collector
D. none of these
4 OP-AMP has the following input terminals
A. one
B. two
C. three
D. four
5 If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
A. Instantaneous value
B. RMS value
C. Value averaged over a cycle
D. Either (B) or (C)
6 The basic circuit elements of A.C circuit are
A. Resistor
B. Inductor
C. Capacitor
D. All the three
7 In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
8 At resonance, the phase angle for RLC series resonance circuit equals
A. 0°
B. 90°
C. 180°
D. 270°
9 The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its
A. Icwill decrease
B. VCEwill increase
C. ICwill increase
D. VCCwill increase
10 Peak value of alternative current is:
A. one of its Instantaneous value
B. Equal to its RMS value
C. The same as its peak-to-peak value
D. Both (B) and (C)

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