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MCQ
BASIC ELECTRONICS
CONTROL SYSTEM ENGINEERING
DIGITAL ELECTRONICS
ELECTRICAL CIRCUIT ANALYSIS
ELECTRICAL ENERGY CONSERVATION AND AUDITING
ELECTRICAL ENGINEERING MATERIALS
ELECTRICAL MACHINES
ELECTRICAL VEHICLES
ELECTRICAL WIRING
ELECTROMAGNETICS
MEASUREMENT & INSTRUMENTATION
MICROPROCESSOR AND MICROCONTROLLER INTERFACING
POWER ELECTRONICS & DRIVES
POWER SYSTEM
SIGNALS & SYSTEMS
UTILIZATION OF ELECTRICAL ENERGY
BASIC ELECTRONICS
Q11.
The most commonly used transistor circuit is
common emitter
common base
common collector
all of the above three equally
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Solution
Q12.
The instantaneous operating point swings along
The DC load line
The AC load line
Both load lines
Neither load line
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Solution
Q13.
Which of the following is NOT true for a common collector transistor?
Input impedance is high
It can be used for impedance matching
Output impedance is low
Power gain is high
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Solution
Q14.
In a common emitter amplifier, unbypassed emitter resistance provides
voltage-shunt feedback
current-series feed back
negative voltage feed back
positive current feed back
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Solution
Q15.
Which type of EB biasing and CB biasing is used for the application of ON switching?
Reverse, Forward
Forward, Reverse
Forward, Forward
Reverse, Reverse
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Solution
Q16.
When transistors are used in digital circuits they usually operate in the ___________.
active region
breakdown region
saturation and cutoff regions
linear region
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Solution
Q17.
A silicon transistor is biased with base resistor method. If \(\beta = 100, \:V_{BE} =0.7 V,\) zero signal collector current \(I_C = 2\: mA\) and\( V_{CC} = 10V\) , what is the value of the base resistor\( R_B\)?
\(105 k\Omega\)
\(530 k\Omega\)
\(465 k\Omega\)
\(315 k\Omega\)
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Solution
Q18.
The quiescent point Q in a voltage amplifier is selected in the middle of active region
It gives better stability
The circuit needs a small dc voltage
Biasing circuit need less number of resistance
It gives distortionless output
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Solution
Q19.
FET can be used as a
variable capacitor
variable register
constant voltage source
negative resistance
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Solution
Q20.
Which of the following is a characteristic of a reverse biased p-n junction?
Very narrow depletion region
Large current flow
Almost no current
Very low resistance
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Solution
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