what is the purpose of interpose t/f in control and relay ckts?

Answer Posted / ullas k prabhu

To set the time of operation of the relay as soon as the
fault is detected...It will be usually interms of
milliseconds.....

Is This Answer Correct ?    1 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how can we save enegry by using VFD for Resiprocating Air compressor which is having more unloading running hours

1910


If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?

1855


Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv

2082


Why saturation region slowly shifted in the left side?

1547


Is neutral transformer can be called as control transformer?

1607






In radial network the source is fed from 1 end both ends at central

1727


The electromagnetic torque developed is proportional to what in a D.C series motor?

817


What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

1691


How to check the LM324 Ic

8125


How to address the servo drive for motor

1636


What is DC series motor?

823


WHAT IS DIFFERENCE BETWEEN CAPACITOR AND CAPACITANCE?

1558


what is the difference between electrical and electronic choke?

1572


What is given by the definition in BIL IMP/PF = 950/395 kV. This was found in a name plate of a power transformer.

1956


What is the power requirement of tamil nadu for one month?

1649