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Electrical Machines
Quadrature axis synchronous reactance is the ratio of
Vmax to Imax.
Vmax to Imin.
Vmin to Imin.
Vmin to Imax.
Vmax to Imax.
Vmax to Imin.
Vmin to Imin.
Vmin to Imax.
Answer
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Related Question
Electrical Machines
Wave winding is employed in DC machine of
low current and low voltage rating.
high current and low voltage rating.
low current and high voltage rating.
high current and low voltage rating.
low current and low voltage rating.
high current and low voltage rating.
low current and high voltage rating.
high current and low voltage rating.
Answer
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Electrical Machines
In a single phase induction motor, the starting torque developed is proportional to
1/V²
1/V
V²
supply voltage V
1/V²
1/V
V²
supply voltage V
Answer
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Electrical Machines
The air gap between stator and the rotor of the 3 - φ induction motor is kept
as small as possible.
as wide as possible.
air gap does not matter.
depends on the material of stator and the rotor.
as small as possible.
as wide as possible.
air gap does not matter.
depends on the material of stator and the rotor.
Answer
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Electrical Machines
The 3 - Φ induction motors are, by a very considerable margin, the most widely used AC motors as
they are capable of operation under range of leading and lagging pf.
they have maximum efficiency and maximum starting torque.
they have very good speed regulation.
these are cheaper in cost, simple and rugged in construction.
they are capable of operation under range of leading and lagging pf.
they have maximum efficiency and maximum starting torque.
they have very good speed regulation.
these are cheaper in cost, simple and rugged in construction.
Answer
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Electrical Machines
For same HP rating and full load speed which of following motor has poor starting torque?
Shunt.
Differently compounded.
Series.
Cummulative compound.
Shunt.
Differently compounded.
Series.
Cummulative compound.
Answer
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