why we usually call 415 volts instead of 440 volts
Answer Posted / rawat
For 230v single phase, 3phase will be 440v and for 240v the 3- phase will be 415v.
Is This Answer Correct ? | 6 Yes | 13 No |
Post New Answer View All Answers
what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?
PLEASE TELL ME ABOUT QUESTION PAPER OF UPCL ENTERENCE EXAM.
i have seen one 8.4 MW synchronous motor in a plant located in bellary it is fixed with brushless rotary rectifier ,anybody can explain its start up principle
What will be the size of copper cable (each for 3 phase and 1 neutral) from Service connection Kit-Kat to Panel Board (i.e. to main switch) for a 6 pole 3-phase AC induction motor of 200 H.P. capacity? Amp-255 A, Frequency:- 1450 rpm.
I am shobana from Chennai. I am having my personal interview on 19th Dec at Chennai.kindly mail me the questions to mail id shobana.shanthi@gmail.com
what are the main faults that occur in stabilizers? How they corrected and resolved ? Types of stabilizers ?
what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/
why star point of HT motor not earthed?
How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?
What are the different types of hydro schemes?
A car's starter motor draws a current of 100 A at 12,0 V when starting the engine. The mechanical power required to turn the engine is 960 W. At what rate is energy from the battery converted to non-mechanical forms of energy?
I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.
Which power will flow first if we switch on a motor Active or Reactive? How?
What are the various types of BUSBAR Schemes? explain each
hi Is there any possibilities to find out the rotation of a shaft or something else by using electromagnectic waves or by IR rays.If s then can v change the dir., of rotation of the same by remotely?& how? plz dn't any1 say "NO r CAN'T"