1000+ Electrical Engineering MCQ Questions and Answers Pdf - 3

Question: 11

A clipper circuit always

(A) clips some part of the input signal

(B) clips upper portion of input signal

(C) clips both half cycles of input signal

(D) needs a dc source

Question: 12

Under high electric fields, in a semiconductor with increasing electric field

(A) the velocity of the charge carriers increases

(B) the velocity of the charge carriers saturates

(C) the mobility of the carriers increases

(D) the mobility of charge carriers decreases

Question: 13

The action of a JFET in its equivalent circuit can best be represented as a

(A) voltage controlled voltage source

(B) voltage controlled current source

(C) current controlled voltage source

(D) current controlled current source

Question: 14

For which one of the following materials, is the Hall coefficient closest to zero?

(A) alloy

(B) intrinsic semiconductor

(C) insulator

(D) metal

Question: 15

Which one of the following is a trivalent material?

(A) arsenic

(B) antimony

(C) boron

(D) phosphorus