Answer Posted / sachin kumar sharma
A UPS SYSTEM PROVIDES EMERGENCY POWER SUPPLY WHEN UTILITY
POWER SUPPLY IS NOT AVAILABLE. AND IT MAINTAINS TO LOAD IN
ALL CONDITIONS.
| Is This Answer Correct ? | 6 Yes | 4 No |
Post New Answer View All Answers
how can we determine size of a cable by knowing the kw or current rating of a load?how can we calculate the resistance box of a slip ring motor?
WHat is the general checks required for Dry type transformers
What should be the values of settling time, peak time, steady state error, overshoot, rise time, MPOS (Maximum percent over shoot) to keep the system in transient state, to keep the system in steady state ?
What happen to generator if i have unbalanced load?
What is stepper motor. What is its uses?
Why we use circular(Stepped) cross section in transformer core?
how many types control panel of a 132/33 kv substation
Differentiate between digital phase converter and ordinary phase converter.
What is Antipumping Function & If we have C.T how we find the Ratio ?
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<
What is resolution of a measurement?
How to calculate the copper in HT motors if KW, RPM & Voltage is given
if voltage bt phase & nutral is 38v in a panel board . whats the root cause.
how to calculate cable size in diffrent loads?
What is the difference between a fuse and a breaker?