Answer Posted / abdul ghouse
A relay is an electrically operated switch. Many relays use
an electromagnet to operate a switching mechanism
mechanically.
commonly there are 4 legged (pins) for relay. You can check
the mechanical switch by Ohm meter (multi meter) similar
like Elec switch testing. ON - OFF low and high resistance
it should show then it should OK or else its defective.
the other part of relay is Elec winding part can be tested
by continuity check
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
What is meant by earthhing of a magnetic flow meter and when to use empty pipe detection?
What are the applications of the electric motors?
Safety of dry type transformer
ROC converges if poles and zeros lie inside a. Origion b. Z=1
Shall I use 40A semiconductor Fuses in 32 A SFU ? Frame size is same. What Happen if Fuses burn on SFU?
Why PT voltages are measured with respect to ground? What do u mean by voltage or current polarized.
What happens if we run alternator on under frequency?
what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.
how to determine motor size for a fan application?
WHY RATING OF VCB NOT LESS THAN 630A
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above
What is Meter MF if External CT Ratio is 150/1 , PT Ratio is 132/110 Meter CT Ratio is 200/1 & Meter PT Ratio is 110/1
why tertiary winding is used in transformer with diagram?
what happen ehen synchronisation is done at below rated speed
Can an inverter be used as a converter? How?
