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Electrical Machines
For larger units high torque it is preferred to use
Partial motor.
Slip induction motor.
Universal motor.
DC shunt motor.
Partial motor.
Slip induction motor.
Universal motor.
DC shunt motor.
Answer
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Related Question
Electrical Machines
Commutators in DC machines have a role of which converts
AC to DC.
high voltage DC to low voltage DC.
Both AC to DC and DC to AC.
none of these.
AC to DC.
high voltage DC to low voltage DC.
Both AC to DC and DC to AC.
none of these.
Answer
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Electrical Machines
Which of the following DC motors has almost constant speed over their full load range?
Shunt.
none of these.
Series.
Compound (cummolative).
Shunt.
none of these.
Series.
Compound (cummolative).
Answer
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Electrical Machines
Equalizer rings are used in which of the followings?
both 1 and 2
None of these
wave winding
lap winding
both 1 and 2
None of these
wave winding
lap winding
Answer
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Electrical Machines
Cogging of induction motor occurs at
high voltage and when stator and rotor poles are not equal.
low voltage and when stator and rotor poles are not equal.
low voltage and when stator and rotor poles are equal.
high voltage and when stator and rotor poles are equal.
high voltage and when stator and rotor poles are not equal.
low voltage and when stator and rotor poles are not equal.
low voltage and when stator and rotor poles are equal.
high voltage and when stator and rotor poles are equal.
Answer
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Electrical Machines
Which of the following represents the pitch factor?
sin (α/2)
Cos α
Cos (α/2)
Cos α²
sin (α/2)
Cos α
Cos (α/2)
Cos α²
Answer
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