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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 16
26.
Maximum rectification efficiency for a half wave rectifier is
100%
88%
50%
40.6%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
For a semiconductor, the conductivity is a function of the products of the number of charge carriers and their mobilites. As result, if the temperature of a slab of intrinsic silicon increases, how does its conductivity vary?
Decreases
Increases
Remains unaffected
Increases or decreases depending upon the rise in temperature
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
In a junction transistor, the collector cut-off current 'ICB0' reduces considerably by doping the
emitter with high level of impurity
emitter with low level of impurity
collector with high level of impurity
collector with low level of impurity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
A Schottky diode clamp is used along with a switching BJT for
reducing the power
reducing the switching time dissipation
increasing the value of β
reducing the base current
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
The first dominant pole encountered in the frequency response of a compensated op-amp is approximately at
5 Hz
10 kHz
1 MHz
100 MHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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