Electrical Engineering Materials

A. forward biasing voltage
B. reverse biasing voltage
C. temperature
D. the amount of doping

A. equal to
B. less than
C. greater than
D. any of the above

A. 0.15 eV
B. 0.25 eV
C. 0.5eV
D. 0.7eV

A. An acceptor
B. A donor
C. Germanium
D. Silicon

A. low carbon steel
B. wrought iron
C. cast iron
D. malleable iron

A. decreases
B. increases
C. remains constant

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

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