Which of the following statement is correct for the indoor substations? O All the equipment lies open in the air. O t is situated near a large load center O It is situated near a power station O It is located in the towns In distribution systems, fixed capacitors are usually sized for minimum base-load conditions. Select one: True O True O False

Which of the following statement is correct for the indoor substations? O All the equipment lies open in the air. O t is situated near a large load center O It is situated near a power station O It is located in the towns In distribution systems, fixed capacitors are usually sized for minimum base-load conditions. Select one: True O True O False

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter26: Three-phase Circuits

Section: Chapter Questions

Problem 3PA: You are an electrician working in an industrial plant. A 30-hp three-phase induction motor has a...

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You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.
An ac resistance is higher than a dc resistance. True False
You are an electrician working in an industrial plant. A 30-hp three-phase induction motor has a current draw of 36 amperes at full load. The motor is connected to a 480-volt line. A three-phase wattmeter indicates a true power of 22 kW. Determine the power factor of the motor and the amount of capacitance needed to correct the power factor to 95. Also determine the minimum voltage rating of the capacitors. The capacitors are to be connected in wye.
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