Category: Electrical Engineering Materials

A. transformer, motor and generator windings
B. transmission and distribution lines
C. house wiring
D. all above applications

A. insulators
B. conductors
C. semiconductors
D. superconductors

A. 2
B. 4
C. 6
D. 8

A. 2n2
B. 4n2
C. 2n3
D. 4ns

A. the crystal structure having no atomic vibration at 0°K
B. all electrons interact in the super-conducting state
C. the electrons jump into nucleus at 0°K
D. none of the above

B. lowest temperature co-efficient
C. good mechanical strength
D. good corrosion resistance
E. easy solderable and drawable quality
F. all of the above

A. Where lubrication is difficult or im-possible
B. Where corrosive chemical action exists
C. Where high temperature exists
D. All of the above

A. a ceramic body having metal and caps
B. a wire of platinum
C. a heavy cross-section of copper or aluminium
D. a ceramic tube having carbon rod inside it

A. the amplitude of vibration of the atoms varies with temperature
B. the electron density varies with temperature
C. the electron gas density varies with temperature

A. increases
B. decreases
C. does not change