2. A 11,000/6,600 V. 3-0, transformer has a star-connected primary and a delta-connected secondary. It supplies a 6.6 kV motor having a star-connected stator, developing 969.8 kW at a power factor of 0.9 lagging and an efficiency of 92 per cent. Calculate (i) motor line and phase currents (ii) transformer secondary current and (iii) transformer primary current.
2. A 11,000/6,600 V. 3-0, transformer has a star-connected primary and a delta-connected secondary. It supplies a 6.6 kV motor having a star-connected stator, developing 969.8 kW at a power factor of 0.9 lagging and an efficiency of 92 per cent. Calculate (i) motor line and phase currents (ii) transformer secondary current and (iii) transformer primary current.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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![2. A 11,000/6,600 V, 3-0, transformer has a star-connected primary and a delta-connected secondary.
It supplies a 6.6 kV motor having a star-connected stator, developing 969.8 kW at a power factor of 0.9
lagging and an efficiency of 92 per cent. Calculate (i) motor line and phase currents (ii) transformer
secondary current and (iii) transformer primary current.
[(a) Motor ; I, = 1ph = 126.3 A (b) phase current 73 A (c) 75.8 A]
%3D](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff4367ca4-6c4f-4131-be9a-4f280ff70262%2F6a7b59f3-48c6-4c21-89ba-7e981c42c04f%2Fy7s0fi_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. A 11,000/6,600 V, 3-0, transformer has a star-connected primary and a delta-connected secondary.
It supplies a 6.6 kV motor having a star-connected stator, developing 969.8 kW at a power factor of 0.9
lagging and an efficiency of 92 per cent. Calculate (i) motor line and phase currents (ii) transformer
secondary current and (iii) transformer primary current.
[(a) Motor ; I, = 1ph = 126.3 A (b) phase current 73 A (c) 75.8 A]
%3D
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