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Electronica interview questions
Electronica interview questions
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Total Questions: 5
1. A practical operational amplifier has:
A. Very high input impedance and very high voltage gain
B. Very high input impedance and very low voltage gain
C. Vey low input impedance and very high voltage gain
D.
Show Correct Answer
Correct Answer is :
Very high input impedance and very high voltage gain
2. A typical application for a zener diode is:
A. Voltage stabilization
B. Power rectification
C. Signal detection
D.
Show Correct Answer
Correct Answer is :
Voltage stabilization
3. A thyristor has which of the following:
A. High resistance when switched on
B. High resistance when switched off
C. A positive temperature coefficient
D.
Show Correct Answer
Correct Answer is :
High resistance when switched off
4. The forward voltage drop of a conducting silicon diode is approximately:
A. 0.2 V
B. 0.6 V
C. 2 V
D.
Show Correct Answer
Correct Answer is :
0.6 V
5. The frequency of the ripple voltage present on the output of a bridge of a bridge rectifier fed from a 400 Hz Ac supply will be:
A. 200 Hz
B. 400 Hz
C. 800 Hz
D.
Show Correct Answer
Correct Answer is :
200 Hz
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