A. forward biasing voltage
B. reverse biasing voltage
C. temperature
D. the amount of dog
The minority carrier concentration is largely a function of_____________? Read More »
Electrical Engineering Materials A. equal to
B. less than
C. greater than
D. any of the above
The current due to electron flow in conduction band is the hole current in valence band? Read More »
Electrical Engineering Materials A. 0.15 eV
B. 0.25 eV
C. 0.5eV
D. 0.7eV
For germanium the forbidden energy gap is_______________? Read More »
Electrical Engineering Materials A. An acceptor
B. A donor
C. Germanium
D. Silicon
is an element used in semiconductors whose atoms have three valence electrons? Read More »
Electrical Engineering Materials A. low carbon steel
B. wrought iron
C. cast iron
D. malleable iron
The carbon percentage is least in__________________? Read More »
Electrical Engineering Materials A. decreases
B. increases
C. remains constant
The conductivity of an extrinsic semiconductor with temperature________________? Read More »
Electrical Engineering Materials A. Holes can exist in certain semiconductors only
B. Holes can exist in any material including conductors
C. Holes may constitute an electric current
D. Holes can be considered as a net positive charge
For a hole which of the following statements is incorrect ? Read More »
Electrical Engineering Materials A. insulator
B. metal
C. intrinsic semiconductor
D. none of the above
A. zero
B. one
C. negative
D. more than one
A. Age hardening
B. Alloying
C. Temperature
D. Cold work
E. All of the above
Which of the following factors affect resistivity of metals ? Read More »
Electrical Engineering Materials