- (A) magnetic flux, direction of current flow and resultant force
- (B) magnetic flux, direction of motion and the direction of e.m.f. induced
- (C) magnetic field strength, induced voltage and current
- (D) magnetic flux, direction of force and direction of motion of conductor
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- (A) current
- (B) voltage
- (C) speed
- (D) none of above
- (A) where low voltage and high currents are involved
- (B) where high voltage and small cur-rents are involved
- (C) in both of the above cases
- (D) in none of the above cases
- (A) Blv
- (B) Blv2
- (C) Bl2v
- (D) Bl2v2
- (A) imperfect brush contact
- (B) field resistance less than the critical resistance
- (C) no residual magnetism in the generator
- (D) faulty shunt connections tending to reduce the residual magnetism
- (A) carbon
- (B) soft copper
- (C) hard copper
- (D) all of above
- (A) commutator
- (B) solid connection
- (C) slip rings
- (D) none of above
- (A) speed
- (B) load
- (C) voltage
- (D) speed and voltage
- (A) speed
- (B) load
- (C) voltage
- (D) speed and voltage
- (A) reduce the bulk
- (B) provide the bulk
- (C) insulate the core
- (D) reduce eddy current loss
