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Recent questions tagged armaturewinding
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1
GATE2014313
The noload speed of a $230$ $V$ separately excited $dc$ motor is $1400$ $rpm$. The armature resistance drop and the brush drop are neglected. The field current is kept constant at rated value. The torque of the motor in $Nm$ for an armature current of $8$ $A$ is ____________.
asked
Feb 12, 2017
in
Electrical Machines
by
makhdoom ghaya
(
9.2k
points)
gate2014ee3
excitation
armaturewinding
tarque
0
votes
0
answers
2
GATE2014236
A $250$ $V$ $dc$ shunt machine has armature circuit resistance of $0.6$ $Ω$ and field circuit resistance of $125$ $Ω$. The machine is connected to $250$ $V$ supply mains. The motor is operated as a generator and then as a motor separately. The line current of the machine in both the cases is $50$ $A$. The ratio of the speed as a generator to the speed as a motor is ____________.
asked
Feb 12, 2017
in
Electrical Machines
by
makhdoom ghaya
(
9.2k
points)
gate2014ee2
coreresistance
armaturewinding
0
votes
0
answers
3
GATE2014137
A $15$ $kW$, $230$ $V$ $dc$ shunt motor has armature circuit resistance of $0.4$ $Ω$ and field circuit resistance of $230$ $Ω$. At no load and rated voltage, the motor runs at $1400$ $rpm$ and the line current drawn by the motor is $5$ $A$. At full load, the motor draws a line current of $70$ $A$. Neglect armature reaction. The full load speed of the motor in $rpm$ is _________.
asked
Feb 12, 2017
in
new
by
makhdoom ghaya
(
9.2k
points)
gate2014ee1
armaturewinding
revolutionperminute
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