Q4: A) A 3-phase, 50 Hz, 400 V motor develops 100 H.P. (74-6 kW), the power factor being 0.75 lagging and efficiency 93%. A bank of capacitors is connected in delta across the supply terminals and power factor raised to 0-95 lagging. Each of the capacitance units is built of 4 similar 100 V series capacitors. Determine the capacitance of each capacitor. B) Give a reasonable justification to (two) of the following: 1- The receiving end voltage increased at lightly load. 2- The voltage drop consideration is relatively unimportant in design of feeder 3- In most industrial factories, the power factor is lagging.

Q4: A) A 3-phase, 50 Hz, 400 V motor develops 100 H.P. (74-6 kW), the power factor being 0.75 lagging and efficiency 93%. A bank of capacitors is connected in delta across the supply terminals and power factor raised to 0-95 lagging. Each of the capacitance units is built of 4 similar 100 V series capacitors. Determine the capacitance of each capacitor. B) Give a reasonable justification to (two) of the following: 1- The receiving end voltage increased at lightly load. 2- The voltage drop consideration is relatively unimportant in design of feeder 3- In most industrial factories, the power factor is lagging.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...

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