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Electrical Machines
In shapers and slotters which motor are preferred?
Synchronous motor.
Slip ring IM.
Squirrel cage IM.
Double cage motor.
Synchronous motor.
Slip ring IM.
Squirrel cage IM.
Double cage motor.
Answer
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Related Question
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.
ratio of starting to running current.
efficiency.
ratio of input to output voltage.
ratio of starting to running torque.
ratio of starting to running current.
efficiency.
Answer
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Electrical Machines
The commutator segments of DC machines are made up of
brass
copper alloy
copper
hard-drawn copper
brass
copper alloy
copper
hard-drawn copper
Answer
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Electrical Machines
Universal motors are used in
All of these
food processing
traction
cranes
All of these
food processing
traction
cranes
Answer
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Electrical Machines
Open circuit in a transformer is prefered with
rated transformer current
high frequency supply
direct current
rated transformer voltage
rated transformer current
high frequency supply
direct current
rated transformer voltage
Answer
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Electrical Machines
Armature reaction in dc motor results
short circuit.
increase in speed.
open circuit.
decrease in speed.
short circuit.
increase in speed.
open circuit.
decrease in speed.
Answer
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