Answer Posted / md. samiul islam
In Transformer, there are two types of losses, One is copper
loss (Cu Loss) which depends on current and other is iron
loss which depends on the voltage. Hence total transformer
loss depends upon the Volt-Ampere (VA, so it is independent
of load power factor. This is why a transformer is rated in
KVA instead of KW.
Is This Answer Correct ? | 22 Yes | 2 No |
Post New Answer View All Answers
why transmission is only 3 phase and not 2 or 4 or poly phases
How to findout raw or ups power? its not indicated in socket,
how can check the resistance of battery contact?
given data are load current & power factor cable core size? plz any one update the calculation formula
in single phase converter, the no.of scr's conducting during overlap a)1 b)2 c)3 d)4
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
any one please tell taht what type questions will be asked in BHEL interview, i am having interview on 24th Dec, please send this to mail pradeepsistam@yahoo.co.in
What is the types of HT motor testing
salam&hi, i need to know about how can i calculate an enough current for the new building before i submit it to the suppliers
Explain the working of any one cutting machine
What are the temperature elements?
draw the full wave and half wave circuit of 3 phase system and inverter circuit used in ups
Explain the terms real power, apparent power and reactive power for ac circuits and also the units used.
what is difference between isolation and ultra isolation transformer?, what is the method of testing ?
2 v/500amp/hr to 1.80vpc at 20 degree celsious 2v/5ooamp/hr to 1.75 vpc at 77degree farren .this is the capacity of a battery .what is the meaning of this . can i get a detailed explenation