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Electrical Machines
DC shunt motors are suitable for
Lathes.
All of this.
Centrifugal pumps
Blowers and fans.
Lathes.
All of this.
Centrifugal pumps
Blowers and fans.
Answer
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Related Question
Electrical Machines
The power flow of a dc motor, with respect to a DC generator is
reversed.
modified.
increased.
none of these.
reversed.
modified.
increased.
none of these.
Answer
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Electrical Machines
A 4 pole dynamo with wave wound armature has 51 slots contains 20 conductors in each slot. If induced emf 357 Volts and speed is 8500 rpm, flux per pole will be
1.4 mWb.
2.7 mWb.
1.2 mWb.
3.5 mWb.
1.4 mWb.
2.7 mWb.
1.2 mWb.
3.5 mWb.
Answer
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Electrical Machines
Under operating conditions the rotor conductor should be _________________ in induction motor.
always closed.
always opened.
none.
semi closed or semi opened.
always closed.
always opened.
none.
semi closed or semi opened.
Answer
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Electrical Machines
The torque angle, in a synchronous motor, is the angle between
magnetizing electric current and back emf.
None of these
the rotating stator flux and rotor flux.
the supply voltage and the back emf.
magnetizing electric current and back emf.
None of these
the rotating stator flux and rotor flux.
the supply voltage and the back emf.
Answer
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Electrical Machines
In above questions, find the power delivered by each of the alternators to a load of impedance 6Ω(resistive)
6000 W, 7000 W.
3190 W, 5040 W.
1000 W, 5040 W.
100 W, 2000 W.
6000 W, 7000 W.
3190 W, 5040 W.
1000 W, 5040 W.
100 W, 2000 W.
Answer
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