Electronics and Communication Engineering - Electronic Devices and Circuits

31.
The forbidden band in semiconductors is of the order of
6 eV
1 eV
10 eV
0.01 eV
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
For an P-N-P transistor in normal operation its junction are biased as
emitter base : reverse, collector base : forward
emitter base : forward, collector base : reverse
emitter base : forward, collector base : forward
emitter base : reverse, collector base : reverse
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
A FET is to be operated as voltage variable resistor. For this drain to source voltage VDS should be,
74
= VP
< VP
> VP
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.

Assertion (A): FET has characteristics very similar to that of pentode.

Reason (R): Both FET and pentode are voltage controlled devices.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
The current gain of a bipolar transistor drops at high frequencies because of
transistor capacitance
high current effects in the base
parasitic inductive elements
the early effect
Answer: Option
Explanation:
No answer description is available. Let's discuss.