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AE-JE Foundation EE : Electrical Machines Quiz - 7
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The full load shaft torque of a 3-ϕ, 4-pole, 50 Hz induction motor is 200 N-m. If the rotor emf makes 120 cycles per minute, then what would be the motor output power?
The maximum starting torque of a 3-phase induction motor is obtained when the rotor resistance is
In a 3-ϕ phase induction motor, the value of stalling torque.
When will a slip ring induction motor runs at super synchronous speed?
Which of the following statement is true, when a 3-phase induction motor is loaded from no load to full load.
(i) Air gap flux decreases
(ii) Power factor improves
(iii) Torque decreases
A 4 pole, 50 Hz induction machine is running at a speed of 1550 RPM. The induction machine will run as an:
A 3-phase induction motor has a full-load slip of 3 percent at normal voltage. What will be the value of slip if it develops the same torque theoretically while operating at 110 percent of normal voltage?
In a 3-phase induction motor, the regenerative braking occurs when:
What is the ratio of mechanical power developed to rotor copper loss in the rotor of three phase induction motor?
A SCIM having a rated slip of 4% on full load has a starting torque the same as full load torque the starting current is
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Jul 27AE & JE Exams
Mohd. IrshadMember since Apr 2020