Download Aptitude Crack
img not found img not found

Materials and Components - Engineering

Q1:

With increase in temperature, the electrical conductivity would

A increase in metals as well as in intrinsic semiconductor

B increase in metals but decrease in intrinsic semiconductor

C decrease in metals but increase in intrinsic semiconductor

D decrease in metals as well as in intrinsic semiconductor

ANS:C - decrease in metals but increase in intrinsic semiconductor

Increase in temperature causes resistivity of metals to increase and resistivity of intrinsic semiconductors to decrease. Conductivity is reciprocal of resistivity.