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17. A manufacturing plant has a load of 3,600 kva at a lagging power factor of 0.707. A 500-hp synchronous motor having an efficiency of 90 per cent is installed and is used also to improve the over-all power factor to 0.937 lagging. Calculate the kilovolt-ampere input rating of the synchronous motor and the power factor at which it must operate.

17. A manufacturing plant has a load of 3,600 kva at a lagging power factor of 0.707. A 500-hp synchronous motor having an efficiency of 90 per cent is installed and is used also to improve the over-all power factor to 0.937 lagging. Calculate the kilovolt-ampere input rating of the synchronous motor and the power factor at which it must operate.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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DEGREE: ELECTRICAL ENGINEERING 

SUBJECT/COURSE: AC MACHINES

 

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17. A manufacturing plant has a load of 3,600 kva at a lagging power factor of 0.707. A 500-hp synchronous motor having an efficiency of 90 per cent is installed and is used also to improve the over-all power factor to 0.937 lagging. Calculate the kilovolt-ampere input rating of the synchronous motor and the power factor at which it must operate.
Transcribed Image Text:17. A manufacturing plant has a load of 3,600 kva at a lagging power factor of 0.707. A 500-hp synchronous motor having an efficiency of 90 per cent is installed and is used also to improve the over-all power factor to 0.937 lagging. Calculate the kilovolt-ampere input rating of the synchronous motor and the power factor at which it must operate.
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