Q5: A 30 KVA transformer has the iron loss and full load copper lossof 350 and 650 W, respectively. Determine the (i) Full load efficiency,(II) 0.8 load efficiency, (iii) Output kVA corresponding to maximumefficiency, and (iv)Maximum efficiency. Consider that the powerfactor of the load is 0.6 lagging.

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Answered: former has the iron loss and full load…

former has the iron loss and full load c espectively. Determine the (i) Full load cy, (iii) Output kVA corresponding to Maximum efficiency. Consider that

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 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...

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Concept explainers

Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.

Question

Q5: A 30 KVA transformer has the iron loss and full load copper loss
of 350 and 650 W, respectively. Determine the (i) Full load efficiency,
(II) 0.8 load efficiency, (iii) Output kVA corresponding to maximum
efficiency, and (iv)Maximum efficiency. Consider that the power
factor of the load is 0.6 lagging.

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