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Single Phase Motors
The repulsion start induction run motor is used because of
high starting torque
good power factor
high efficiency
minimum cost
high starting torque
good power factor
high efficiency
minimum cost
Answer
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Related Question
Single Phase Motors
Which of the following statements regarding a reluctance motor is incorrect ?
It requires no D.C. field excitation for its operation
Its squirrel cage-rotor is of unsym-metrical magnetic construction in order to vary reluc-tance path between stator and rotor
It is nothing else but a single-phase, salient pole synchronous-induction motor
It cannot be reversed, ordinarily
It requires no D.C. field excitation for its operation
Its squirrel cage-rotor is of unsym-metrical magnetic construction in order to vary reluc-tance path between stator and rotor
It is nothing else but a single-phase, salient pole synchronous-induction motor
It cannot be reversed, ordinarily
Answer
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Single Phase Motors
Electrical faults in a motor occur must commonly in its
Commutator
Motor winding
Brushes
Control equipment
Commutator
Motor winding
Brushes
Control equipment
Answer
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Single Phase Motors
Which of the following single-phase motors has relatively poor starting torque ?
Universal motor
Repulsion motor
All single phase motors have zero starting torque
Capacitor motor
Universal motor
Repulsion motor
All single phase motors have zero starting torque
Capacitor motor
Answer
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Single Phase Motors
If starting winding of a single-phase induction motor is left in the circuit, it will
run faster
run slower
draw excessive current and overheat
spark at light loads
run faster
run slower
draw excessive current and overheat
spark at light loads
Answer
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Single Phase Motors
In a split phase induction motor, the two stator windings
Are mutually displaced by 90° electrical
Draw only the in phase currents
Have equal R/XL ratio
Draw equal current
Are mutually displaced by 90° electrical
Draw only the in phase currents
Have equal R/XL ratio
Draw equal current
Answer
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