Welcome to the world of
"Synchronous Motor"
Objective question answer
Ref: on Electrical Machinery Fundamentals, by Stephen J. Chapman.
1. In the synchronous generator, what is the speed of the rotor? to generate 60Hz power in two-pole machine : 900 r/min 1800 r/min 3600 r/min 7200 r/min
1. In the synchronous generator, what is the speed of the rotor? to generate 60Hz power in two-pole machine :
900 r/min
1800 r/min
3600 r/min
7200 r/min
2. What is difference between synchronous motor and synchronous generator ? Starting Methods are different. Different insulation used. Cooling arrangement are different. No difference.
2. What is difference between synchronous motor and synchronous generator ?
Starting Methods are different.
Different insulation used.
Cooling arrangement are different.
No difference.
3. The basic speed of synchronous motor is depend on Input voltage. Input frequency Load Power factor.
3. The basic speed of synchronous motor is depend on
Input voltage.
Input frequency
Load
Power factor.
4. The PF of synchronous motor is Very according to excitation Always leading UPF Always lagging.
4. The PF of synchronous motor is
Very according to excitation
Always leading
UPF
Always lagging.
5. In the synchronous motor Ia versus If curve is known as : Output curve Input curve V curve U curve
5. In the synchronous motor Ia versus If curve is known as :
Output curve
Input curve
V curve
U curve
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