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

At resonance, the impedance of RLC series circuit is

Question # 2

Which of the following diode is used for the detection of light

Question # 3

The phase angle of a series RLC circuit at resonance is

Question # 4

The device which allows only the flow of an A.C. through a circuit is

Question # 5

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

Question # 6

The length of rotating vector (on a certain scale) represents the:

Question # 7

Conversion of alternating current into direct current is called

Question # 8

Alternating current is produced by a voltage source which polarity:

Question # 9

For the normal operation of the transistor, its

Question # 10

The closed loop gain of the non-inverting amplifier is given by

Question # 11

Peak value of alternative current is:

Question # 12

When the emitter-base junction of a transistor is reverse biased, collector current

Question # 13

In an A.C circuit with resistor only, the current and voltage have a phase angle of

Question # 14

Average value of A.C voltage during one cycle is

Question # 15

Which of the following diode is used to derive the current in external circuit when light is incident in the circuit

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The output voltage of half wave rectification is in the form of
A. a smooth curve
B. a smooth wave
C. pulses
D. all of the above
2 The Instantaneous value of alternative current maybe:
A. The same as its RMS value
B. Greater than its Rms value
C. The same as its peak value
D. Any of these
3 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°
4 The impedance of RLC series resonance circuit at resonant frequency is
A. Greater than R
B. Equal to R
C. Less than R
D. None of these
5 The closed loop gain of the inverting amplifier is written as
A. G = R2/R1
B. G = 1 + R2/R1
C. G = -R2/R1
D. G = 1 - R2/R1
6 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
7 In a transistor, the central region is called
A. collector
B. emitter
C. base
D. none of them
8 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
9 Which of the following diodes can operate in the reverse biased condition
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
10 For a n-p-n transistor, the conventional current equation can be written as
A. IE+ IC= IB
B. IC- IB= IE
C. IC+ IB= IE
D. IB+ IE= IC

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