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

For the normal operation of the transistor, its

Question # 2

A digital system deals with quantities or variables which have

Question # 3

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

Question # 4

To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance

Question # 5

OP-AMP has the following input terminals

Question # 6

In series RC circuit when R=Xc, then the phase angle is

Question # 7

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

Question # 8

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

Question # 9

Peak value of alternative current is:

Question # 10

A P-N juction or semiconductor diode cannot be used as

Question # 11

In n-p-n transistor, emitter base junction is kept

Question # 12

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

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

Chock consumes externally small

Question # 15

SI unit of impedance is

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
A. 353.5V
B. 250V
C. 175V
D. zero
2 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
3 Average value of A.C voltage during one cycle is
A. 1
B. Zero
C. Maximum
D. Variable
4 Most OP-AMP operates with
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
5 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
6 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
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 The basic circuit element in D.C. circuit is:
A. A capacitor
B. A resistor
C. An inductor
D. Both (A) and (C)
9 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
10 During the negative half-cycle of the half-wave rectification, the diode
A. does not conduct
B. conducts
C. either of these
D. none of these

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