Home / Engineering / Antennas and Microwave Engineering / Question

M

Mr. Dubey • 51.43K Points
Coach 

Q.) In a GaAs n-type specimen, the current generated is constant irrespective of the electric filed applied to the specimen.

(A) true
(B) false
(C) ---
(D) ---
Correct answer : Option ( B) -

Explanation: 
 in a gaas n-type specimen, when the electric field applied reaches a threshold value of eth, the current in the specimen becomes suddenly oscillatory and with respect to time and these oscillations are in the microwave frequency range. this effect is called gunn effect.

Share

Previous

Next

Discusssion

Login to discuss.

Related MCQs on Antennas and Microwave Engineering

Q. Which principle does the linear system follow?

Q. Speed controlled by variation of field flux results in

Q. A shunt generator can self-excite

Q. The transient response, yt(t), of a system becomes as t tends to infinity.

Q. method can bring the locomotive to dead stop.

Q. Form Factor is the ratio of

Q. Use mason’s gain formula to find the transfer function of the following signal flow graph:

Q. A change in the value of the emitter resistance Re in a differential amplifier

Q. Find the velocity error constant of the system given below :

Q. _______________ is a sampling pattern which is repeated periodically