Q4-(A)-A 230 V, 2.5 KVA single -phase transformer has an iron of 100 w at 40 Hz and 70 w at30Hz. Find the hysteresis and eddy current losses at 50Hz)(B)-Indicate whether the following statements are true or false and correct the false statements1- Two transformer are operating in parallel, their load sharing will depend upon per unitimpedance2- E.M.F per turn (E/N) in H.V. winding is more than the E.M.F per turn in L.V. winding3- open circuit test in transformer is performed with rated transformer current4- Transformers are rated in KVA instead of KW because KVA is fixed whereas KWdepends on load power factor5- The core losses in a transformer are independent of power factor

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Answered: -(A)-A 230 V, 2.5 KVA single -phase…

-(A)-A 230 V, 2.5 KVA single -phase transformer has an iron of 100 w at 40 Hz and 70H Find the hysteresis and eddy current losses at 50Hz

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 3.13MCQ: Consider the adopted per-unit system for the transformers. Specify true or false for each of the...

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

Q4-(A)-A 230 V, 2.5 KVA single -phase transformer has an iron of 100 w at 40 Hz and 70 w at
30Hz. Find the hysteresis and eddy current losses at 50Hz
)
(B)-Indicate whether the following statements are true or false and correct the false statements
1- Two transformer are operating in parallel, their load sharing will depend upon per unit
impedance
2- E.M.F per turn (E/N) in H.V. winding is more than the E.M.F per turn in L.V. winding
3- open circuit test in transformer is performed with rated transformer current
4- Transformers are rated in KVA instead of KW because KVA is fixed whereas KW
depends on load power factor
5- The core losses in a transformer are independent of power factor

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