need frequent starting and stopping of electric motors,

Related MCQs

• In........ method of starting three phase induction motors the starting voltage is not reduced
• In method of staging three phase induction motors the starting voltage is not reduced.
• In squirrel cage induction motors which of the following methods of starting cannot be used ?
• A pony motor is used for the starting which of the following motors ?
• A pony motor is used for the starting which of the following motors ?
• In squirrel cage induction motors which of the following methods of starting cannot be used ?
• Which ofthefollowing motors is preferred when smooth and precise speed control over a wide range is desired ?
• Which off the following motors is preferred when a smooth and resize speed control over a wide range is desired?
• The number of sets used in pole changing type squirrel cage motors for derricks and winches, is
• Wound rotor and squirrel-cage motors with high slip which develop maximum torque at stand still are used for