Answer / sukhvinder

adopting interlocking means safety during any type of
operation for example in electrical substations it is must.
in substations operation of isolators, earth switches and
circuit breakers interlocking is provided. when you charge
the line/ict we have to ist open the earth swch then close
isolators and in last circuit breakers to be close. if you
did not open the e/s or not close the isolator cb will not
close due this interlocking.

Answer / yuvaraj

interlocking meanns two switches not working in same time.
one switch work anotherone not working. this is safety for
electrical operation.

Answer / kishor a thakkar

i have another example.
we have two belts.one is uper and second os down side for
passing urea or cement.
so we must have privide interlock. first is must run
downside then running is uper belt.
if time any down belt side creat problem so uper belt is
not running. and prouducts will not weasteg.

Answer / shaari

interlocking means :When two machines are interlocked with there tooths,then only both the machines are able to work at a time if one machine starts to work automatically the other will work if not both are idle.this is interlocking.

why we do occ & scc test in transformer ?how we can do it ?

2 Answers  

---

it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?

0 Answers   TATA,

---

i want to know how to calculate the battery capacity based on the UPS . ex i want to run have one kva UPS Which should run 10 hours ? in that case how many batteries to be installed and what will be the AH Value .

2 Answers  

---

whats the diff b/w mpcb and mcb?weather it trips on single phasing or not.

9 Answers   Electra Power, Essar,

---

IN a transformer during power supply how the LV and HV bushing works??

3 Answers   CSEB,

---

Load transfer in 11kv double busbar switchgear - operation.

0 Answers   KSEB, L&T, Siemens,

---

if a number of plc s are there then how many modbus to be used

0 Answers  

---

Why we use cosine angle for calculating power factor not in sine angle ?

4 Answers  

---

How to select transmission line type (i.e. 11kv or 33kv) for new established industries

0 Answers  

---

what is per unit impedance?

3 Answers  

---

to improve the existing power factor whether capacitors have to be added in series or parallel.and why

3 Answers  

---

State The Difference Between Generator And Alternator?

0 Answers   ABB,

---