Download Aptitude Crack
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Communication Systems - Engineering

Q1:

Assertion (A): An electronic tuner uses varactor diode Reason (R): The capacitance of a varactor diode depends on the magnitude of reverse bias.

A Both A and R are correct and R is correct explanation of A

B Both A and R are correct but R is not correct explanation of A

C A is correct but R is wrong

D A is wrong but R is correct

ANS:A - Both A and R are correct and R is correct explanation of A

A varactor diode has a variable capacitance which depends on reverse bias. It is a very convenient device for tuning.