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

Question # 3

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 4

If 250V is the RMS value of alternative voltage, then its peak value Vowill be:

Question # 5

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

Question # 6

In a normally biased n-p-n transistor, an electron c current IEflows from the

Question # 7

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

Question # 8

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

Question # 9

Alternating current is produced by a voltage source which polarity:

Question # 10

A digital system deals with quantities or variables which have

Question # 11

The circuit which is used to smooth the output voltage of the full-wave rectification is known as

Question # 12

In RLC series circuit, resonance occurs when

Question # 13

A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from

Question # 14

The entire wave form of sinusoidal voltage is actually a set of all the:

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 one of the following waves belongs to electromagnetic spectrum
A. Radio and TV waves
B. Radar waves
C. Micro waves
D. All of them
2 A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at
A. inverting input
B. non-inverting input
C. any one of the input terminal
D. none of them
3 A diode characteristic curve is a plot between
A. current and time
B. voltage and time
C. voltage and current
D. forward voltage and reversed voltage
4 The length of rotating vector (on a certain scale) represents the:
A. Peak value of alternating quantity
B. RMS value of alternating quantity
C. Instantaneous value of alternating quantity
D. Either (B) or (C)
5 If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
A. 353.5V
B. 250V
C. 175V
D. zero
6 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
7 The basic circuit elements of A.C circuit are
A. Resistor
B. Inductor
C. Capacitor
D. All the three
8 Which of the following diode is used for the detection of light
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
9 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)
10 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

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