The Single phase induction motor houses which type of rotor: Wound rotor Squirrel cage rotor Both of these None of these Correct answer: 2. Squirrel cage rotor A single-phase induction motor houses squirrel cage rotor.
The Correct Statement about DC field current in Induction Motor: The external dc field current is always required for excitation Two external dc fields are required Multiple external dc fields are required for No external dc field current is required Correct answer: 4. No external dc field current is required
Rotor slots are skewed in induction motor so as to: Reduce the rotor locking tendency To reduce magnetic hum Both of these None of these Correct answer: 3. Both of these
Which of the following motor will provide the highest starting torque: D.C. shunt motor Universal motor Schrage motor All of these will provide equal torque Correct answer: 3. Schrage motor
A hysteresis motor works on the principle of: Hysteresis loss Eddy current loss Both of these None of these Correct answer: 1. Hysteresis loss A hysteresis motor works on the principle of hysteresis loss. Similar Questions: The hysteresis and eddy current losses in the transformer depend on what factors – Transformer MCQ#26 The efficiency of … Read more
Which type of induction motor is recommended for high speed and high starting torque applications: Capacitor-start motor Capacitor-start and run motor Shaded-pole type motor Universal motor Correct answer: 4. Universal motor
For which of the applications a reluctance motor is preferred: Lifts and hoists Refrigerators Timing devices All of these Correct answer: 3. Timing devices
The shading coil in a shaded-pole induction motor usually consists of: A single turn of heavy wire that is in parallel with running winding A multilayer fine gauge copper wire in parallel with running winding A single turn of heavy copper wire which is short-circuited Combination of all of above Correct answer: 3. A single … Read more
The revolving field in a shaded-pole single-phase induction motor is produced by using: Shading coils 12 V DC battery Pilot alternator Capacitor Correct answer: 1. Shading coils
Shaded-pole motors have percentage efficiency of ranges: 1% to 5% 5% to 35% 35%-75% 75%-95% Correct answer: 2. 5% to 35%