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Electrical Machines
What type of dielectric material is used in capacitors used for fans and for power factor correction?
Glass.
Vacuum.
Oil impregnated paper.
Mica.
Glass.
Vacuum.
Oil impregnated paper.
Mica.
Answer
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Related Question
Electrical Machines
Which of following components of a DC generator plays vital role for providing direct electric current of a DC generator?
Dummy coils.
Commutator.
Equalizer rings.
Eye bolt.
Dummy coils.
Commutator.
Equalizer rings.
Eye bolt.
Answer
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Electrical Machines
Which of the following represents the operating region of slip in a 1-phase induction motor?
0 < S < 1
-2 < S < 2
0 < S < 2
-1 < S < 1
0 < S < 1
-2 < S < 2
0 < S < 2
-1 < S < 1
Answer
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Electrical Machines
A 4 pole dc generator is running at 1500 rpm the frequency of current in the armature winding is
50Hz.
100Hz.
200Hz.
150Hz.
50Hz.
100Hz.
200Hz.
150Hz.
Answer
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Electrical Machines
The armature voltage control is considered suitable for a DC motor driven at constant
speed.
current.
power.
torque.
speed.
current.
power.
torque.
Answer
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Electrical Machines
In a star - delta starting of an IM
applied voltage per stator phase is 57.7 % of a line volt
resistance is inserted in the rotor.
line voltage is 57.7 % of stator voltage.
reduced voltage is applied to the stator.
applied voltage per stator phase is 57.7 % of a line volt
resistance is inserted in the rotor.
line voltage is 57.7 % of stator voltage.
reduced voltage is applied to the stator.
Answer
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