The following 3-phase loads are connected to a 3- phase 400 V, 50 Hz power supply: Load 1: Lighting load of P kW at unity P.F where P 100 + NN and NN is the last two digits (from right) of your registration number. Load 2: A 3-ph induction motor that draws 400 A at 0.8 lagging power factor. Find: 1- The total line current supplied by the source to feed these loads. 2- The leading power factor of the 300 kW synchronous motor that should be connected in parallel with these loads in order to to improve the power factor to be 0.96. 3- The line curent supplied by the source to feed these loads after connecting the synchronous motor. 4- Does the synchronous motor supply or consume reactive power in this case of operation. Verify your answer.

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
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My reg number is 38
The following 3-phase loads are connected to a 3- phase 400 V, 50 Hz power supply:
Load 1: Lighting load of P kW at unity P.F where P = 100 + NN and NN is the last two digits (from
right) of your registration number.
Load 2: A 3-ph induction motor that draws 400 A at 0.8 lagging power factor.
Find:
1- The total line current supplied by the source to feed these loads.
2- The leading power factor of the 300 kW synchronous motor that should be connected in parallel
with these loads in order to to improve the power factor to be 0.96.
3- The line current supplied by the source to feed these loads after connecting the synchronous motor.
4- Does the synchronous motor supply or consume reactive power in this case of operation. Verify
your answer.
Transcribed Image Text:The following 3-phase loads are connected to a 3- phase 400 V, 50 Hz power supply: Load 1: Lighting load of P kW at unity P.F where P = 100 + NN and NN is the last two digits (from right) of your registration number. Load 2: A 3-ph induction motor that draws 400 A at 0.8 lagging power factor. Find: 1- The total line current supplied by the source to feed these loads. 2- The leading power factor of the 300 kW synchronous motor that should be connected in parallel with these loads in order to to improve the power factor to be 0.96. 3- The line current supplied by the source to feed these loads after connecting the synchronous motor. 4- Does the synchronous motor supply or consume reactive power in this case of operation. Verify your answer.
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