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Single Phase Motors
Which of the following applications would need the smallest size of motor?
Sewing machine
Domestic mixi
Electric clock
Table fan
Sewing machine
Domestic mixi
Electric clock
Table fan
Answer
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Related Question
Single Phase Motors
The single phase shaded pole motor has _____
Squirrel cage motor
Wound rotor
High starting torque
High power factor
Squirrel cage motor
Wound rotor
High starting torque
High power factor
Answer
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Single Phase Motors
In a split phase induction motor, the two stator windings
Draw equal current
Draw only the in phase currents
Are mutually displaced by 90° electrical
Have equal R/XL ratio
Draw equal current
Draw only the in phase currents
Are mutually displaced by 90° electrical
Have equal R/XL ratio
Answer
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Single Phase Motors
A capacitor-start single phase induction motor is switched on to supply with its capa-citor replaced by an inductor of equivalent reactance value. It will
start and run at rated speed
not start at all
start and run slowly
start and then stop
start and run at rated speed
not start at all
start and run slowly
start and then stop
Answer
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Single Phase Motors
In a hysteresis motor, the rotor must have
Resistivity
Retentivity
None of the listed here
Susceptibility
Resistivity
Retentivity
None of the listed here
Susceptibility
Answer
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Single Phase Motors
A universal motor operates on
Constant speed and varying load
Synchronous speed with varying load
Constant load and varying speed
Approximately constant speed and load
Constant speed and varying load
Synchronous speed with varying load
Constant load and varying speed
Approximately constant speed and load
Answer
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