1KVA transformer of different frequencies of
50hz,100hz,500hz&1000hz. which one of these transformer has
big size? Give reason

Answer Posted / rahul

The EMF of a transformer at a given flux density increases
with frequency.By operating at higher frequencies,
transformers can be physically more compact because a given
core is able to transfer more power without reaching
saturation and fewer turns are needed to achieve the same
impedance.

So, 50Hz transformer will be the bigger one.

Is This Answer Correct ?    5 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

I NEED RRB SYLABUS FOR JE ELECTRICAL ,PLEASE SEND TO MY E- MAIL ID joo28_eee@yahoo.co.in

2410


If we want to change a contactor of faulty one what are the conditions want to fullfil

1551


What is George phenomena to start the synchronus machine?

3655


How can maintain our H.T. motors used in cement plant. please send me procedure.

4683


WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM

1558






How to calculate the no of Ceiling fan (1200mm sweep) per unit area?

1402


regarding safety what would u consider the most important rules to observe when inspecting electrical equipment?

1584


For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel

2530


What are safety device in vcb and acb?

3279


Whether power factor should be high or low? Why?

671


why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain

1743


How to calculate multiplication factor in kva example 500kva ans pls ?

1401


what is meant by IGBT how they differ from tyristor ?

1945


How to use computer cpu ups use for home inverter circuit board

1299


what are the usual topology of transformers at different substations in the power system and why that particular topology is choosen. what are the limitaions of that topology?

1622