1. Why is it not adjustable to carry or the same experiment for large transformers? 2. What method you have to apply to determine the efficiency of large transformer? 3. Draw the vecctor diagram for unity, leading p.f and lagging p.f at rated secondary current?

1. Why is it not adjustable to carry or the same experiment for large transformers? 2. What method you have to apply to determine the efficiency of large transformer? 3. Draw the vecctor diagram for unity, leading p.f and lagging p.f at rated secondary current?

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 3.30P: Reconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and...

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Concept explainers

Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.

Question

1. Why is it not adjustable to carry or the same experiment for large
transformers?
2. What method you have to apply to determine the efficiency of large
transformer?
3. Draw the vecctor diagram for unity, leading p.f and lagging p.f at rated
secondary current?

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