- (A) Aluminium is more ductile and malleable than copper
- (B) Aluminium is available in plenty, cheaper and lighter than copper
- (C) Aluminium has lower resistivity than that of copper
- (D) Aluminium has less temperature co-efficient than copper
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- (A) extrnisic
- (B) intmisic
- (C) N-type
- (D) P-type
- (A) intensity
- (B) speed
- (C) frequency
- (D) wave length
- (A) Porcelain
- (B) Slate
- (C) Asbestos
- (D) Glass
- (A) Diamond
- (B) High speed steel
- (C) Mild steel
- (D) Cast iron
- (A) Phosphorous
- (B) Rubber
- (C) Silicon
- (D) Aluminium
- (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
- (A) temperature
- (B) resistance
- (C) eddy currents
- (D) coupling co-efficient
- (A) positive ions only
- (B) negative ions only
- (C) positive and negative ions
- (D) electrons and holes
