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Higher Study | Electrical Machines | Three Phase Induction Motor

Which of the following alternatives will be cheaper?
Generally, Crawling in squirrel cage induction motors is the tendency to run stably at speeds as low as
The net torque developed by a single-phase induction motor at starting is:
The term “cogging” is associated with
Three-phase induction motor is?
When 3-­phase supply is given to the stator of the motor, a
In a three-phase cage induction motor when a full voltage is applied to the stator winding, the rotor fails to start because the number of stator and rotor slots are either equal or have an integral ratio. Determine the phenomenon mentioned in the above context.
Below stated are some of the statements about the squirrel cage induction motor. You need to identify which of the following is incorrect. 1. Very poor speed control 2. Although they are energy-efficient white at full load, they need a lot of energy while being started. 3. They are susceptible to voltage variations. 4. The induction motor consumes more current when supply voltage is reduced. 5. They are explosion-proof as there are no brushes which eliminate the risks of sparking.
When a Star Delta Starter is used with 3 – phase squirrel cage motors, in which sequence is the connection made?
A three phase induction motor running at 1440 rpm on rated supply will run at the following rpm when fuse of one phase gets burnt
The thickness of stator laminations of a 3 phase induction motor, when compared to its rotor laminations, is:
When one line of a 3-phase induction motor, running with constant load, gets opened
Regenerative breaking occurs when
An induction motor when started on load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to be.
Distributed winding is a type of winding in electrical machines where all the winding turns are arranged in a number of full pitches or fractional pitches. These coils are then placed in phase form or the commutator winding in slots spread around the periphery of the air gap. This type of winding used in
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