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Single Phase Motors

Single Phase Motors
Which of the following applications would need the smallest size of motor?

Sewing machine
Table fan
Domestic mixi
Electric clock

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Single Phase Motors
What could be the size of a universal motor for use in vaccum cleaners?

1/4 HP
2 HP
3/4 HP
1 HP

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Single Phase Motors
The single phase series motor can operate on

None of the listed here
DC only
Both AC and DC
AC only

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Single Phase Motors
If the single phase motor runs hot the probable cause cannot be

Shorted stator coils
High voltage
Low voltage
Blown fuse

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Single Phase Motors
If a DC series motor is operated on AC supply, it will

Spark excessively
Have poor efficiency
All of the listed here
Have poor power factor

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Single Phase Motors
Most of the single phase induction motor are _____ machines.

4-pole
8-pole
2-pole
6-pole

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