Answer / nikhil k j

ELCB is the earth leakage circuit breaker
MCB is the miniature circuit breaker and also
the RCCB is the residual current circuit breaker.

how to calculate a cable size while load is given in amp or kw and length is also define.?

1 Answers  

---

what is difference between speed mode and torque mode in motor?? explain in simple words please.

0 Answers   Toyota,

---

What is meant by celling voltage & current in excitor ?

0 Answers  

---

State kirchoff voltage law?

0 Answers  

---

Two 11 kv lines are feeding to common bus in a substation,I have one set of CT & PT(3ct,2pt), How can I measure both lines power using single set.

6 Answers   L&T,

---

When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

---

If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.

0 Answers   Usha Capacitors,

---

why we use 20 KV, 10KA LA on 22 KV Line

2 Answers  

---

In case you don't have coal and salt for earthing, how can you achieve good temporary earthing?

1 Answers   Focus Energy, NHPC, ONGC,

---

How to calculate ht side cable of 630 kva oil cooled outdoor transformer?

1 Answers  

---

why is power supplied in 3 phase only? why not in 2 or 4 phases?

11 Answers  

---

Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.

0 Answers   DAE,

---