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Electrical Machines
For which of the following loads, armature reaction is magnetizing in nature?
pure inductive load
None of these
pure resistive load
pure capacitive load
pure inductive load
None of these
pure resistive load
pure capacitive load
Answer
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Related Question
Electrical Machines
The dc motor which can provide zero speed regulation at full load without any controller, is
differential compound.
series.
shunt.
cumulative compound.
differential compound.
series.
shunt.
cumulative compound.
Answer
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Electrical Machines
In a step down transformer which one of the following statements is true?
Secondary current is less than primary current.
Number of secondary turns is more than that of primary.
Number of secondary turns is less than primary turns.
Secondary power is less than primary power.
Secondary current is less than primary current.
Number of secondary turns is more than that of primary.
Number of secondary turns is less than primary turns.
Secondary power is less than primary power.
Answer
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Electrical Machines
Which of the following motors is/are widely used?
slip ring induction motor
None of these
squirrel cage induction motor
either of these
slip ring induction motor
None of these
squirrel cage induction motor
either of these
Answer
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Electrical Machines
The breakdown torque of a synchronous motor varies as
applied voltage V
1/V²
V²
1/V
applied voltage V
1/V²
V²
1/V
Answer
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Electrical Machines
The torque angle, in a synchronous motor, is the angle between
magnetizing electric current and back emf.
the rotating stator flux and rotor flux.
the supply voltage and the back emf.
None of these
magnetizing electric current and back emf.
the rotating stator flux and rotor flux.
the supply voltage and the back emf.
None of these
Answer
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