- (A) the torque required
- (B) the speed of the motor
- (C) the voltage across the terminals
- (D) none of the above
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- (A) 100% of the previous value
- (B) 50% of the previous value
- (C) 25% of the previous value
- (D) 10% of the previous value
- (E) none of the above
- (A) proportional to the armature current
- (B) proportional to the square of the armature current
- (C) proportional to field current
- (D) inversely proportional to the armature current
- (A) series motor only
- (B) shunt motor only
- (C) compound motor only
- (D) both shunt and compound motor
- (A) Series motor
- (B) Shunt motor
- (C) Cumulatively compounded motor
- (D) Differentially compounded motor
- (A) 2 to 3 per cent
- (B) 10 to 15 per cent
- (C) 20 to 25 per cent
- (D) 50 to 75 per cent
- (A) Low speed operation
- (B) High speed operation
- (C) Variable speed operation
- (D) Fixed speed operation
- (A) back e.m.f. = 2 x supply voltage
- (B) back e.m.f. = | x supply voltage
- (C) supply voltage = | x back e.m.f
- (D) supply voltage = back
- (E) m.f
- (A) 4.0
- (B) 2.0
- (C) 1.0
- (D) 0.5
- (A) To reduce eddy current loss
- (B) To support the field coils
- (C) To spread out flux for better uniformity
- (D) To reduce the reluctance of the magnetic path
