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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 WIRING
ELECTROMAGNETICS
MEASUREMENT & INSTRUMENTATION
MICROPROCESSOR AND MICROCONTROLLER INTERFACING
POWER ELECTRONICS & DRIVES
POWER SYSTEM
SIGNALS & SYSTEMS
UTILIZATION OF ELECTRICAL ENERGY
BASIC ELECTRONICS
Q21.
If the ripple factor of the output wave of a rectifier is low, it means that
Output voltage will have less ripple.
Output voltage will be low.
Filter circuits may be required.
None of this.
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Solution
Q22.
When a diode is forward biased
barrier potential increase
barrier potential decrease
majority current reduces
minority current reduce
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Solution
Q23.
Thermal runaway is not possible in FET because as the temperature of FET increases
the mobility decreases
the transconductance increases
the drain current increase
the transconductance decreases
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Solution
Q24.
Guard driving reduces the
CMRR of an Intrumentation Amplifier
Leakage current in the shielded cable
Voltage gain of the first stage
Common-mode input voltage
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Solution
Q25.
In the circuit, the transistor has a large \(\beta\) value \((V_{BE} = 0.7V)\). Find the current through \(R_C\).
2mA
1.6mA
1mA
0.5mA
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Solution
Q26.
Schmitt trigger is basically
an astable multivibrator
a monostable multivibrator
a bistable.multivibrator
an oscillator
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Solution
Q27.
A half wave rectifier circuit with capacitive filter is connected to 200V, 50 Hz ac line the output voltage across the capacitor should be approximately
100V
180V
280V
400V
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Solution
Q28.
The semiconductors and insulating material are having________ temperature coefficient of resistance. therefore, the resistance of semiconductors and insulators_________with rise in temperature.
positive, decrease
negative, increase
negative, decrease
positive, increase
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Solution
Q29.
Phase difference between the output and input voltage of Common Emitter (CE) Amplifier is
180°
0°
270°
90°
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Solution
Q30.
An astable multivibrator has
One stable state
Two stable state
One quasi-stable state
Two quasi-stable state
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Solution
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