Answer / omer169

A transformer is a static Electric Machine which can change ac quantity (voltage or current) from one level to other level.

Answer / kaustubh soman

Transformer is static device which transfer voltage either
step up or step down without changing its frequency.

Answer / parveen

Transformer is working based on the mutual induction theory.

It have 2 winding. Primary & Secondary winding.

Primary winding :- which get input from main supply.

Secondary winding:- which give back output (desire supply).


It is rated in KVA.

Answer / sudhakar

which converts the voltage without change of its frequency
from primary to secondary

difference between ac series and parallel circuit

0 Answers  

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what is the difference between the characteristics of two different phase bushing of any transformer

0 Answers   NIT,

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How can we calculate ngr resistance for a generator and Transformer ? What type of transformer requires ngr ?

5 Answers   Welspun,

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if single phase is having 220v supply then why three phase is having 440v instead of 660v?

4 Answers   C&S, NTPC,

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Define active and passive network?

0 Answers  

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How to know any size of cable if there are not written on cable? Answer must be theurical not by experience.

0 Answers   El Seif,

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Why colled 440V to 3-phase supply.

0 Answers  

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i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

0 Answers  

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What is maximum permissible length of cable from transformer (33kV/0.433kV) HT side to HT panel which contain VCB? In which standard i shall get this information.

6 Answers   MSEB,

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Why is shaft current insulation required on large motors & when should it be checked i.e. before or after assembly?

2 Answers   Aramco,

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How check proper electrical earthing of machine.

5 Answers   DRJ ARDE,

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what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks

0 Answers   ABC,

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