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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
Q11.
Military grade Op amp be operated in the temperature range of
(- 55 to 1210C)
(- 50º to 150º C)
0º to 100º C
at 30º C
Show Answer
Solution
Q12.
A positive feedback in the amplifier ensures
Low voltage gain
Low current gain
High current gain
High voltage gain
Show Answer
Solution
Q13.
Which multivibrator IC is non-triggerable?
74121
74122
74123
None of these
Show Answer
Solution
Q14.
Voltage-divider bias provides :
An unstable Q point
A stable Q point
A Q point that easily varies with changes in the transistor's current gain
A Q point that is stable and easily varies with changes in the transistor's current gain
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Solution
Q15.
An intrinsic semiconductor at absolute zero temperature
has a large no. of holes.
Behaves like an insulator.
behaves like a metallic conductor
has few holes and same number of electrons.
Show Answer
Solution
Q16.
A non inverting amplifier is nulled at 25 ºC with a gain of 100. Calculate the output voltage when the temperature rises to 50 ºC for an offset drift voltage of 0.15 mV/ ºC.
3.75mV
2.75mV
37.5mV
375mV
Show Answer
Solution
Q17.
Ripple frequency of the output waveform of a bridge rectifier when fed with a 50 Hz sine wave is
100 Hz
25 Hz
50 Hz
None of the above
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Solution
Q18.
An oscillator is basically an amplifier with
zero gain
very large gain
infinite gain
very low gain
Show Answer
Solution
Q19.
The most commonly used semiconductor material is
Silicon
Germanium
Mixture of silicon and germanium
None of the above
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Solution
Q20.
Cross over distortion is a problem for
Class A amplifiers
Class AB amplifiers
Class B amplifiers
None of these
Show Answer
Solution
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