what is working of no & nc.

Answer Posted / shalini.b

NO means normally open - during off condition or any other
abnormal fault condition the contact will open therby
forming a open circuit providing no path for the flow of
current.
NC means Normally close- during normal operations the
contact will be closed forming the closed circuit

Is This Answer Correct ?    67 Yes 15 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what are the installation procedure of high voltage power transformer,CT,CB&PT?

1584


some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

1288


please send me RRB electrical engineer previous year questions for Sr. Section Engineer

1453


george phenomenon of synchronous machine

6917


100 MVA 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase. what will be the fault MVA of generator.

1809






What is meant by Load Encroachment in OHL Feeder Protection?

3078


Draw the DOL starter and star delta starter drawing?

2490


sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder

1532


What products have you designed which have entered high volume production?

1556


In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?

1696


clarify types of motor operated valves and advantages

1449


At what speed an electric car can run with 2 HP motor of weighing 400 kg?

1282


when we have to purchase the transformer by own i.e how much load will preferred HT connection?

1174


What will happen if we introduce negative feedback to a control system that uses a positive feedback?

658


What kind of maintenance is conducted for Transformer

1721