Copper, even though costly, finds use in the windings of electrical machines because
A. Copper points offer low contact resistance
B. Copper can be easily soldered and welded
C. Copper windings are less bulky and the machines become compact
D. All of the above
Answer: Option D
Related Questions on Electrical Engineering Materials
On which of the following factors does the resistivity of a material depend ?
A. Resistance of the conductor
B. Area of the conductor section
C. Length of the conductor
D. All of the above
Piezoelectric materials serve as a source of ________ .
A. Resonant waves
B. Musical waves
C. Microwaves
D. Ultrasonic waves
The tiny block formed by the arrangement of a small group of atoms is called the
A. Unit cell
B. Space lattice
C. Either A or B
D. None of the above
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