- (A) Motor-generator set
- (B) Motor converter
- (C) Rotary converter
- (D) Mercury arc rectifier
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- (A) Ferromagnetic materials
- (B) Paramagnetic materials
- (C) Diamagnetic materials
- (D) Ferrites
- (A) core length increases i
- (B) core area increases
- (C) flux density decreases
- (D) flux density increases
- (A) KT3 and 1CT6
- (B) 1CT3 and 1CT7
- (C) KT4 and KT8
- (D) 10″2 and KT5
- (A) loud-speakers
- (B) generators
- (C) motors
- (D) all of the above
- (A) Diamagnetic materials
- (B) Ferrimagnetic materials
- (C) Antiferromagnetic materials
- (D) Antiferrimagnetic materials
- (A) The conductivity of ferrites is better than ferromagnetic materials
- (B) The conductivity of ferromagnetic materials is better than ferrites
- (C) The conductivity of ferrites is very high
- (D) The conductivity of ferrites is same as that of ferromagnetic materials
- (A) low coercivity
- (B) high susceptibility
- (C) both of the above
- (D) none of the above
- (A) strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force
- (B) uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts
- (C) both of above
- (D) none of the above
- (A) heating
- (B) hammering
- (C) by inductive action of another magnet
- (D) by all above methods
