A. Phosphorous
B. Rubber
C. Silicon
D. Aluminium
Which of the following is a semiconductor material ? Read More »
Electrical Engineering Materials A. Both have great tendency for oxidation
B. Both have low melting point
C. Very large length of wires will be required
D. All of the above
A. Tungsten
B. Aluminium
C. Copper
D. Carbon
Which of the following materials is the best conductor of electricity ? Read More »
Electrical Engineering Materials A. temperature
B. resistance
C. eddy currents
D. coupling co-efficient
Thermocouples are mainly used for the measurement of_____________? Read More »
Electrical Engineering Materials A. positive ions only
B. negative ions only
C. positive and negative ions
D. electrons and holes
A. Solubility
B. Viscosity
C. Porosity
D. Hygroscopicity
is the property of absorbing moisture from atmosphere_____________? Read More »
Electrical Engineering Materials A. insulators
B. conductors
C. semiconductors
D. superconductors
A. Less liability to kink
B. Greater flexibility
C. Less liability to break
D. All of the above
A. copper points offer low contact resistance
B. copper can be easily soldered and welded
E. copper windings are less bulky and the machines become compact
D. all of the above
A. Copper
B. Nichrome
C. Platinum
D. Manganin
Which of the following materials is used for making coils of standard resistances ? Read More »
Electrical Engineering Materials