What is Transformer?

Answer Posted / prabhakar

Transformer is a static device wich transfers electrical
supply from one place to another place at the same frequency

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why do we mostly prefer to generate and distribute electricity in 3 phase and not in 4 phase or 5 phase?

732


DC transmission

1614


What is the one main difference between ups & inverter ? And electrical engineering & electronics engineering ?

666


iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.

1764


1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

1772






Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?

1499


A d.c. Shunt motor is found suitable to drive fans because they require?

740


What are the types of control system?

638


Why is it prefer to initiate circuit breaker failure by "86" lockout relay not by "94" tripping relay ?!

1312


explain single phase series motor

1461


Please explain, how to test vector group of tranformer(Delta y1) . Thank

1226


how to calculate the loss tangent of electrical cables

1615


How to confirm the Phase shifting Transformer VECTOR GROUP relation , as below ZNy11.45d10.45-ZNYy0.15d11.15

2768


What is the different types of cable & current capacity of cable

1448


how to electronic energy metter failed in electomagnectic fild passing in the metter and which thing to defect more on metter.

1497