Electrical Engineering Materials

A. increase
B. decrease
C. remain unchanged
D. any of the above

A. infrared frequencies
B. d.c. and low frequency
C. a.c. and high frequency
D. frequencies having no effect
E. 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. precision instruments
B. heating elements
C. motor starters
D. incandescent lamps
E. all of the above

A. magnetic field strength
B. temperature
C. either (A) or (B)
D. both (A) and (B)

A. decreasing its temperature
B. increasing its temperature
C. decreasing its vibration
D. increasing its vibration

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

A. generating very strong magnetic field
B. manufacture of bubble memories
C. generating electrostatic field
D. generating regions free from magnetic field

A. Copper
B. Aluminium
C. Steel reinforced copper
D. Steel reinforced aluminium

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