- (A) Duty ratio only
- (B) Frequency only
- (C) Duty ratio and frequency
- (D) Duty ratio, frequency and time delay
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- (A) Electrical power developed in armature – copper losses
- (B) Mechanical power input – iron and friction losses
- (C) Electrical power developed in armature – iron and copper losses
- (D) Mechanical power input – iron and friction losses – copper losses
- (A) It will rotate at the same speed as that with its field winding closed
- (B) It will rotate at less speed as that with its field winding closed
- (C) It will rotate at dangerously high speed
- (D) None of these
- (A) Load survey method
- (B) Mathematical method
- (C) Statistical method
- (D) Economic parameters
- (A) Frequencies above 20 kHz
- (B) Frequencies above 1000 kHz
- (C) Frequencies less than 10 Hz
- (D) 50 Hz frequency
- (A) series with each other
- (B) parallel with each other
- (C) series with the voltage source
- (D) parallel with the voltage source
- (A) equal to the load resistance
- (B) less than the load resistance
- (C) more than the load resistance
- (D) none of the above
- (A) lumped parameters
- (B) passive elements
- (C) distributed parameters
- (D) non-linear resistances
- (A) Inductance
- (B) Condenser
- (C) Wire wound resistor
- (D) Transistor
- (A) large value of e.m.f.
- (B) small value of e.m.f.
- (C) zero source resistance
- (D) infinite source resistance
