A 1000 kVA, 6600 / 400 volts 60 cycle single phase core type transformer has the following average daily load: Full load at 0.8 pf for 8hours Half load at 0.707 pf for 10 hours No load for 6 hours Calculate the ratio of full load copper loss to the iron loss for the transformer to be most economical for the above loading. hint: All day eff must be maximum Use two decimal places for final answer
A 1000 kVA, 6600 / 400 volts 60 cycle single phase core type transformer has the following average daily load: Full load at 0.8 pf for 8hours Half load at 0.707 pf for 10 hours No load for 6 hours Calculate the ratio of full load copper loss to the iron loss for the transformer to be most economical for the above loading. hint: All day eff must be maximum Use two decimal places for final answer
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.10P: A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding...
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19. A 1000 kVA, 6600 / 400 volts 60 cycle single phase core type transformer has the following average daily load:
Full load at 0.8 pf for 8hours
Half load at 0.707 pf for 10 hours
No load for 6 hours
Calculate the ratio of full load copper loss to the iron loss for the transformer to be most economical for the above loading. hint: All day eff must be maximum
Use two decimal places for final answer
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