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 output voltage of half wave rectification is in the form of

Question # 2

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

Question # 3

The basic circuit elements of A.C circuit are

Question # 4

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

Question # 5

During the negative half-cycle of the half-wave rectification, the diode

Question # 6

Alternating current can induce voltage because it has a

Question # 7

The highest value reached by the voltage or current:

Question # 8

Most OP-AMP operates with

Question # 9

The impedance of RLC series resonance circuit at resonant frequency is

Question # 10

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

Question # 11

The input resistance of the OP-AMP is the resistance between the

Question # 12

In which of the following components, pn-junction is used

Question # 13

In free space, the speed of electromagnetic waves is

Question # 14

Peak value of alternative current is:

Question # 15

The value of the potential difference across the depletion region for the case of germanium is

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 In RLC series circuit, resonance occurs when
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
2 In a transistor, if the central region is p-type then this type of transistor is known as
A. p-n-p transistor
B. n-p-n transistor
C. either of these
D. none of these
3 Average value of A.C voltage during one cycle is
A. 1
B. Zero
C. Maximum
D. Variable
4 The average of A.C. current and voltage over a complete cycle is
A. Maximum
B. zero
C. Neither zero nor maximum
D. None of these
5 If the value of C in a series RLC circuit is increased, the resonant frequency
A. Is not affected
B. Increase
C. Remains the same
D. Decreases
6 In n-p-n transistor, emitter base junction is kept
A. reversed
B. forward biased
C. may be reversed or may be forward biased
D. none of these
7 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
8 In which of the following components, pn-junction is used
A. light emitting diode
B. photo diode
C. photo voltaic cell
D. all of these
9 For the normal operation of the transistor, its
A. emitter-base and collector base junctions are forward biased
B. emitter-base junction is reversed biased and collector base junction is forward biased
C. emitter-base junction is forward biased and collector-base junction is reverse biased
D. any one of these
10 A signal is amplified at the output without any change of phase, if it is applied at the
A. inverting input
B. non-inverting input
C. at any of the input
D. none of these

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