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Physics ECAT Pre Engineering Chapter 18 Electronics Physics Online Test MCQs With Answers
Question # 1
The values 1 and 0 are designated as:
Choose an answer
Continuous values
Binary values
Boolean values
Decimal values
Either (B) and (C)
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Question # 2
Origin of the electric and the gravitational forces
Choose an answer
Was known in 1911 A.D.
Was known in 1811 A.D.
Was known in 1711 A.D.
is still unknown
Was known in 1611 A.D.
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Question # 3
Improper biasing of a transistor circuit produces
Choose an answer
Heavy loading of emitter current
Distortion in the output signal
Excessive heat at collector terminal
Faulty location of load line
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Question # 4
Field lines are closer to each other in the region where the filed is
Choose an answer
Stronger
Weaker
Much weaker
Absent
None of these
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Question # 5
In the text book, the transistor amplifier circuit is a:
Choose an answer
Common emitter circuit
Common collector circuit
Common base circuit
Any of these
None of these
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Question # 6
In full wave rectification, simultaneous action is that:
Choose an answer
Two diodes conduct and two do not.
One diode conduct and three do not.
Three diodes conduct and one does not.
All the four diodes conduct
None of these
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Question # 7
Most of the electrons in the base of an NPN transistor flow
Choose an answer
Out of the base lead
Into the collector
Into the emit
Into the base supply
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Question # 8
In the forward biases situation, the current flowing across the p-n junction is a few:
Choose an answer
amperes
Milli amperes
Micro amperes
Pico amperes
None of these
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Question # 9
A digital system deals with quantities which has discrete values:
Choose an answer
Two in number
One in number
Three in number
Four in number
None of these
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Question # 10
Electric intensity at a place due to a charged conductor is a
Choose an answer
Scalar quantity
Vector quantity
Semi vector and semi scalar
Dimensionless quantity
Both A and D are true
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Question # 11
The concept of electric field theory was introduced by
Choose an answer
Michael Faraday
Newton
Dalton
Kepler
Einstein
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Question # 12
Electric field lines emerge from the charges in
Choose an answer
One dimension
Two dimensions
Three dimensions
Four dimensions
None of these
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Question # 13
If the distance between two charges is doubled, the force between them will become
Choose an answer
Double
Half
Three times
One fourth
One third
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Question # 14
Crystal of germanium or silicon in its pure form at absolute zero acts as:
Choose an answer
A conductor
A semiconductor
an insulator
Both (A) and (C)
Both (A) and (B)
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Question # 15
Electric lines of force
Choose an answer
Intersect each other
Are always parallel
Are always anti-parallel
Never intersect
None of these
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Question # 16
The use of chips in electrons is described in the form of:
Choose an answer
Yellow boxes
Black boxes
Red boxes
White boxes
Orange boxes
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