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Electronics and Communication Engineering - Analog Electronics

Exercise : Analog Electronics - Section 16
46.
Efficiency of a half wave diode rectifier is less than 40%.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Generally op amp is used in
open loop
closed loop
cascaded loop
either (a) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The equivalent circuit of an op-amp has
a virtual ground at input
a virtual ground at output
virtual ground at input as well as at output
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
In a transistor with normal bias
the emitter junction has a low resistance
the emitter junction has a very high resistance
the emitter junction supplies majority carries into the base region
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
A transistor has
  1. collector
  2. emitter
  3. base
In a N-P-N transistor the electron flow into the transistor at
I only
II only
II and III only
I and II only
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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