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Single Phase Motors
The full load efficiency of a shaded pole motor is about _______
60 to 70%
70 to 80%
5 to 10%
30 to 35%
60 to 70%
70 to 80%
5 to 10%
30 to 35%
Answer
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Related Question
Single Phase Motors
In a split phase induction motor, the two stator windings
Have equal R/XL ratio
Draw only the in phase currents
Draw equal current
Are mutually displaced by 90° electrical
Have equal R/XL ratio
Draw only the in phase currents
Draw equal current
Are mutually displaced by 90° electrical
Answer
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Single Phase Motors
The main winding and starting winding of a single phase induction motor are connected in _______ across the supply.
None of the listed here
Series-parallel
Parallel
Series
None of the listed here
Series-parallel
Parallel
Series
Answer
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Single Phase Motors
Reluctance motors are
Either of the listed
None of the listed here
Doubly excited
Singly excited
Either of the listed
None of the listed here
Doubly excited
Singly excited
Answer
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Single Phase Motors
In a universal motor, the most common cause of brush sparking is
open armature winding
all of these
high commutator mica
shorted field winding?
open armature winding
all of these
high commutator mica
shorted field winding?
Answer
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Single Phase Motors
Which of the following is most economical method of starting a single phase induction motor?
Resistance start method
Inductance start method
Capacitor start method
Split phase method
Resistance start method
Inductance start method
Capacitor start method
Split phase method
Answer
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