Electronics and Communication Engineering - Electronic Devices and Circuits

41.
Gel is
a polymer having side groups distributed randomly along a vinly polymer chain
a polymer having secondary chains branching from the main molecular chain
a solid frame work of colloidal particles linked together and containing a fluid
a polymer in which the repeating unit of each molecule has vinyl group
Answer: Option
Explanation:
No answer description is available. Let's discuss.

42.
When a P-N junction is unbiased, the junction current at equilibrium is
zero as no charges cross the junction
zero as equal number of carriers cross the barrier
mainly due to diffusion of majority carriers
mainly due to diffusion of minority carriers
Answer: Option
Explanation:
No answer description is available. Let's discuss.

43.
Which one of the following material has the highest dielectric strength?
Porcelain
Soft rubber
Glass
polystyrene
Answer: Option
Explanation:
No answer description is available. Let's discuss.

44.

Assertion (A): In p type semiconductor conduction is mainly due to holes.

Reason (R): In p type material the holes are majority carriers.

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.

45.
In common base configuration, the input characteristics of bipolar junction transistor are drawn between
VEB and IE
VCB and IC
IC and VCE
IE and VCE
Answer: Option
Explanation:
No answer description is available. Let's discuss.