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wha metal conduie7 a. 3/8 inch trade size b. 3/4 inch trade size c. 1/4 inch trade size d. 1/2 inch trade size

wha metal conduie7 a. 3/8 inch trade size b. 3/4 inch trade size c. 1/4 inch trade size d. 1/2 inch trade size

Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter12: Batteries And Other Sources Of Electricity
Section: Chapter Questions
Problem 12RQ: 12. How is the A-hr capacity of a lead-acid battery determined?
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4. What is the minimum size of rigid metal conduit? a. 3/8 inch trade size b. 3/4 inch trade size c. 1/4 inch trade size d. 1/2 inch trade size 5. A 1lluminated by duplex fluorescent lamp at level of 60 cp. Each lamp has an output of 3300 lumens. Depreciation and maintenance factor are o.65 and 0.75 respectively. If the lamps consume 3 watts power factor 754, what is the feeder current. Take supply voltage of 230 volts. a. 57 A b. 92 A c. 75 a d. 72 a 6. What is the rating of the branch circuit if the circuit breaker is 20A? room measure 40 meters by 20 meters needs to be a. 15A b. 20A c. 30A d. All of the above
Transcribed Image Text:4. What is the minimum size of rigid metal conduit? a. 3/8 inch trade size b. 3/4 inch trade size c. 1/4 inch trade size d. 1/2 inch trade size 5. A 1lluminated by duplex fluorescent lamp at level of 60 cp. Each lamp has an output of 3300 lumens. Depreciation and maintenance factor are o.65 and 0.75 respectively. If the lamps consume 3 watts power factor 754, what is the feeder current. Take supply voltage of 230 volts. a. 57 A b. 92 A c. 75 a d. 72 a 6. What is the rating of the branch circuit if the circuit breaker is 20A? room measure 40 meters by 20 meters needs to be a. 15A b. 20A c. 30A d. All of the above
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