WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE
BUSED
Answer Posted / suresh
on bimetalik strips will be bend one side when heat
devloped and it will be orderd to break the control ckt
its used in motor staters
| Is This Answer Correct ? | 18 Yes | 2 No |
Post New Answer View All Answers
difference between semiconductor & conductor & insulator?
the typical output of a solar cell is........
TELL ME WHAT IS INDUCTOR AND CAPACITOR WHAT IS IT BASIC OPERATION ANDFUNCTION?
How to calculate fault level of 11 KV system
what is the k var ratting of 1250kva
plz send me the syllabus or any sample paper for engineer trainee recruitment if any,on ravinder911@yahoo.com
In single phase capacitor motor, if the motor rotate reverse direction then how much power will be consumed by the motor and why?
How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?
Actually I have a doubt on neutral and earth.we use Ac power without taking neutral by connecting to earth,but at that time does it affects on efficiency of any electrical components or no? If yes how?
any earth foult trip the relay but in welding time not trip by earth foult
what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.
When will you multiply and devide with derating factors to the actual value while sizing the cable?
how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.
Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?
What is the meaning of utility ground and clean ground? How the distribution panel is grounded?