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Electrical Machines
If in DC Shunt Motor the flux is reduced suddenly to zero, then
the motor will come to stop.
the speed of motor will be reduced.
the armature current will reduce.
the motor will attain dangerously high speed.
the motor will come to stop.
the speed of motor will be reduced.
the armature current will reduce.
the motor will attain dangerously high speed.
Answer
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Related Question
Electrical Machines
Stability of a synchronous motor ---------- with the increase in excitation.
decreases
remains unaffected
increases
any of the above
decreases
remains unaffected
increases
any of the above
Answer
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Electrical Machines
Centrifugal switch is absent in which of the single phase induction motor?
None of these
Split phase motor.
Shaded pole motor.
PSC (permanent split capacitor) motor.
None of these
Split phase motor.
Shaded pole motor.
PSC (permanent split capacitor) motor.
Answer
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Electrical Machines
Swinburne test is conducted under which of the following condition?
full load
half load
no load
any of the above
full load
half load
no load
any of the above
Answer
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Electrical Machines
Which of the following statement is correct, if short circuit ratio is high?
Good voltage regulation
Low short circuit current
High voltage regulation
None of these
Good voltage regulation
Low short circuit current
High voltage regulation
None of these
Answer
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Electrical Machines
In the 3-phase induction motor, the resultant flux is of a constant nature and is
3/2 times maximum value of flux due to any phase
3 times maximum value of flux due to any phase
equal to φm, where φm is the maximum flux due to any phase
1/2 times maximum value of flux due to any phase
3/2 times maximum value of flux due to any phase
3 times maximum value of flux due to any phase
equal to φm, where φm is the maximum flux due to any phase
1/2 times maximum value of flux due to any phase
Answer
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