SYNCHRONOUS MOTORS QUIZ

Hunting in a synchronous motor can not be due to

Windage friction

Variable frequency

Variable supply frequency

Variable load

TRUE ANSWER : ?
YOUR ANSWER : ?

A synchronous capacitor is an over excited motor running at ________

No load

Half full load

None of the listed here

Full load

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A synchronous motor can be used as a synchronous capacitor when it is

Under excited

Over excited

Under loaded

Over loaded

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Hunting in a synchronous motor cannot be due to

variable load

variable supply voltage

variable frequency

windage friction

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YOUR ANSWER : ?

The size of a synchronous motor is determined by its _____

kVAR rating

kW rating

None of the listed here

kVA rating

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Leading power factor synchronous motors cost ______ the unity pf motors.

About the same as

More than

Less than

None of the listed here

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A synchronous motor develops maximum power when load angle is

60Â°

90Â°

45Â°

120Â°

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In a synchronous motor, the rotor copper loss are met by ______

Dc source

Supply lines

Motor input

Armature input

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The capacity of a synchronous capacitor is generally in the range of

None of the listed here

VAR

MVAR

kVAR

TRUE ANSWER : ?
YOUR ANSWER : ?

The rotor copper losses, in a synchronous motor, are met by

supply lines

armature input

c. source

motor input

TRUE ANSWER : ?
YOUR ANSWER : ?

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