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Electrical Machines
The wound rotor type IM is used for____________ speed operation.
constant.
maximum.
minimum.
variable.
constant.
maximum.
minimum.
variable.
Answer
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Related Question
Electrical Machines
For a transformer to be tested at full load conditions but consuming only losses from the main, we do
None of these
load test
back to back test
OC and SC tests
None of these
load test
back to back test
OC and SC tests
Answer
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Electrical Machines
A compound motor has
both shunt and series field winding.
only series field winding.
tertiary winding.
only shunt field winding.
both shunt and series field winding.
only series field winding.
tertiary winding.
only shunt field winding.
Answer
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Electrical Machines
A three phase 400 V, 6 pole, 50 Hz, squirrel cage induction motor is running at a slip of 5%. The speed of stator magnetic field with respect to rotor magnetic field and speed of rotor w.r.t stator magnetic field are
1000 rpm, 950 rpm.
1000 rpm, - 50 rpm.
zero , - 50 rpm.
zero, 950 rpm.
1000 rpm, 950 rpm.
1000 rpm, - 50 rpm.
zero , - 50 rpm.
zero, 950 rpm.
Answer
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Electrical Machines
For larger units high torque it is preferred to use
Universal motor.
Partial motor.
DC shunt motor.
Slip induction motor.
Universal motor.
Partial motor.
DC shunt motor.
Slip induction motor.
Answer
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Electrical Machines
Which of the following is/are effects of armature reaction?
increase the maintenance and repair
increase the iron loss
All of these
increases the design cost
increase the maintenance and repair
increase the iron loss
All of these
increases the design cost
Answer
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