adspace


what happens if dc supply is given to the transformer?

Answer Posted / vinod g

IF DC APPLIED ,only winding resistance coming across the
supply,remeber big transformer has ohmic value less than
one, so definetly the PRIMARY WDG will BURN OUT.

Is This Answer Correct ?    5 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.

1189


plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?

2377


please send me previous year questions of jspl through which i could prepare myself for the test.

1959


why and how voltage sharing in transformer, during magnetic balance test ?

2440


please send me the previous year's question papers of jindal GET exams

5992


Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.

2465


What the main causes of transient interruptions on Over-Head Distribution Lines?

2223


please send me jindal previous aptitude and technical question and answer.my email id is deep_raj@live.com

2051


How to calculate the sag on transmission Lines.

3116


i've iocl interview.. if you know the interview process please give me information..

2121


how was your last weekend.

1856


please send previous exams question papers

1902


What types of high speed CMOS circuits have you designed?

2213


In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?

2353


1)how to reduce the value of tan delta of trasformer and CB,bushing,CT&PT,CVT ? 2)how to reduce the resistance of CB contact and its operating time? 3)plz.....send me the project report on conditioning and monitoring of substation equipment on my email id (gusaiyogendra03@gmail.com)

2410