M

Mr. Dubey • 52.30K Points
Coach 

Q. 3 IMPATT DIODES, SCHOTTKY BARRIER DIODES, PIN DIODES

(A) avalanche multiplication
(B) break down of depletion region
(C) high reverse saturation current
(D) none of the mentioned
Correct : Option (A)

Explanation: 
 a reverse bias voltage exceeding the breakdown voltage is applied to an impatt diode, a high electric field appears across the n+ p junction. this high field imparts sufficient energy to the holes and also to valence electrons to raise themselves to the conduction band. this results in avalanche multiplication of electron hole pair.

Share

Discusssion

Login to discuss.

Be the first to start discuss.

Related MCQs

Q. The bedding on a cable consists of

Q. If the beam width of an antenna in two orthogonal planes are 300 and 600. Then the directivity of the antenna is:

Q. Link budget consists of calculation of

Q. In main line service as compared to urban and suburban service

Q. The field coils of D.C. generator are usually made of

Q. A 3 Q resistor having 2 A current will dissipate the power of

Q. is a closed loop system.

Q. In a D.C. generator the ripples in the direct e.m.f. generated are reduced by

Q. The value of negative feedback fraction is always _____

Q. Light duty cranes are generally used in