why transformer ratings in kva?
Answer Posted / ankita datta
the power is equal to volt*ampere*cos(power factor angle)
which is watt.but while establishing a machine we have to
kip in mind dat d cost is justified.transformers being
relatively cheaper it is not desirable to study the power
factor of d entire area as d cost wud become2high.so its
constructd wid nly v i knwn.den according 2locality d power
factor is checkd wen required.thus it is kva.generators on d
othr hand r in wattas dey r expensive.
Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
Draw the vector diagramme for Asynchronous Induction Generator at noload,half load and fullload.
how synchronous condenser is used in place of synchronous generator with out negotiating IEEE standards? Can i use 3 generators as synchronous generators and 2 generators as a synchronous condensers in an IEEE 14 bus system with out disturbing the standards?
What are n circles?
What is ideal IR values for ground and neutral.
How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com
Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??
why T/F winding temp measurement cts are odd secondary current ie,109A/1.2A/1.4A?
what is the AC Plant and how can do the work with parts and picture tell us 150 Tr
why swinburnes test cannot be performed on series machines?explain
hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.
what are the different methods for the starting of a synchronous motor.
In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans
A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.
what is the path of thunderlightening? once both a buffalo and a person were standing 5m apart but lightening hit and killed buffalo not person?
What is the effect on Power factor and capacitor when your company load is more than 70 % of welding transformer