Interested to Buy Any Domain ? << Click Here >> for more details...
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
when qty of cable being purchased is not sufficient according to the standard,what should the inspector do to ensure its quality according to the standard?
in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?
why dc is used in control circuit for mv & hv switchgear instead of ac
ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?
what is inverter and converter
Draw transformer phasor diagram.(full load,no load)
Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.
What is meant by positive and negative feedback?
we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?
Q) Write VBscript code along with QTPscript code in QTP tool for below scenario 1. Launch yahoo site(i know) 2. Do loogin(i know) 3.Click inbox link(i know) 4.Go to every page of mail box and count no.of read mails and no.of unread mails(i know) 5.Store page numbers, read mail count and unread mail count in a new excel file sheet 6.Create 10 types of graphs on that data 7.Do logout and close site(i know) 8.Save new excel files with graph
what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks
what is meant by impedance & transient protection?
how to caculate cable size for diff types of loads? if anyone know the calculating procedure please tell me
placement paper samples of mspl company
1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?
