Answer / a.p.nanjappa

as you are aware, in electrical engineering power
transformers or motor winding are connected in star-
undrounded or grounded,Delta connected.

Earth fault protection may be due to capacitaive
circulating current,flowing through the body of equipment
to ground. In large generator,motor it may be 5-10A
unbalanced current flowing through Neutral to ground, and
also fault current sigle phase to ground,double phase to
ground,or three phase to ground.these are severe
faluts.damages equipment severly.

During the testing of Electrical Equipment the test cables should not touch the equipments. For that testing engineers use to cotton rope to hang the cable from measuring Equipment to testing equipment terminal. Please explain the technical reason for this practice.

1 Answers  

---

What is the fuction of UV & how it works in circut breakers? is it one type of relay?

4 Answers  

---

reason behind why the reverse power relay of incoming machine was not acted even when no load was shifted on incoming machine after synchronising the machines ?

2 Answers  

---

what happen if we supply ac to the field of a alternator?

5 Answers  

---

Why the power factor of the alternator in power plant is kept .8 lagging. Can't we maintain it at 1.

3 Answers  

---

If the ceiling fan is on slow speed, does it consume less electricity?

2 Answers  

---

why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

0 Answers   Indcoil Transformers, Power Grid,

---

what is REF relay?

1 Answers  

---

What is resonant peak?

0 Answers  

---

how can we decide where we have to DYn11 or other vector group transformer

4 Answers   BSL, Knight Frank, Security Printing and Minting Corporation of India Limited,

---

Why MCCB is Getting tripped sometimes when there is no load in the Midnight ?

0 Answers  

---

What is the difference between multimeter

0 Answers  

---