wats the procedure to calculate no of batteries for ups?
Answer / k.prakashchandra
When the ups voltage = battery voltage,Number of batteries
required = desired back up hours x load /V x AH of each battery
| Is This Answer Correct ? | 1 Yes | 0 No |
What is the safety factor is to be consider while selecting the switchgear and protection for electrical system
how the testing of protection CT Testing done through Primary injection kit please describe in detail procedure...
The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?
When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?
Why 30°phase shift occur in star-delta transformer between primary and secondary?
What is reason of rating of transmission line multi pal of 11 like as 11/33/66/220 ? Why not use 75 kv 23 kv line in power system ?
1 Answers Apollo, Balco, Bhel, Vardhman,
My ups output shows 230 v between phase and neutral,but show zero between phase and earth.Is the system/installation is correct.If not what will be the possible reasons
What is the battery voltage limit
what is the ideal earth resistance
11 Answers Amit Enterprises, Enercon,
In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?
how give earthing to shif and aeroplane which is away from earth?
What do you mean by Stimulastion Test in Diesel Genarator / Why & when it's conducted ?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)