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Electrical Machines
Compensating winding is placed in the
main field
pole shoe
armature core
All of these
main field
pole shoe
armature core
All of these
Answer
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Related Question
Electrical Machines
which of the following losses are negligible in blocked rotor test?
iron loss
both A and B
mechanical loss
copper loss
iron loss
both A and B
mechanical loss
copper loss
Answer
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Electrical Machines
The direction of rotation of a DC compound motor can be reversed by interchanging
armature or field connections.
shunt field connections.
armature connections.
series field connections.
armature or field connections.
shunt field connections.
armature connections.
series field connections.
Answer
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Electrical Machines
In case of a dc motor the ratio Eb / E is indicative of
ratio of input to output voltage.
ratio of starting to running torque.
efficiency.
ratio of starting to running current.
ratio of input to output voltage.
ratio of starting to running torque.
efficiency.
ratio of starting to running current.
Answer
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Electrical Machines
At slip s = 1 torque developed in machine is
starting torque.
electromagnetic torque.
maximum torque.
none.
starting torque.
electromagnetic torque.
maximum torque.
none.
Answer
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Electrical Machines
Which slots are used in the rotor of an induction motor?
Open slots.
None of above.
Semi closed slots.
Closed slots.
Open slots.
None of above.
Semi closed slots.
Closed slots.
Answer
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