Electronic Devices and Circuits
Piezoelectric quartz crystal resonators find application where

Rectification of the signal is required
Signal frequency control is required
Signal amplification is required
Modulation of signal is required

ANSWER DOWNLOAD EXAMIANS APP

Electronic Devices and Circuits
Assertion (A): A p-n junction has high resistance in reverse direction.Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.

Both A and R are true and R is correct explanation of A
A is false but R is true
A is true but R is false
Both A and R are true but R is not a correct explanation of A

ANSWER DOWNLOAD EXAMIANS APP

Electronic Devices and Circuits
An intrinsic silicon sample has 1 million free electrons at room temperature. As the temperature is increased

The number of free electrons and holes increase but not by the same amount
The number of free electrons and holes increase by the same amount
The number of free electrons increases but the number of holes decreases
The number of free electrons increases

ANSWER DOWNLOAD EXAMIANS APP