Answer Posted / sagar hingmire

Bcoz If making current capacity is not greater than
breaking current then if fault is there on electrical
system & ur going to close CB then very high fault current
will flow through CB and CB will get damaged or blast as
fault is not cleared.

draw singleline diagram of star to delta and dol starters

2243

---

Under wat condition statcom operates as an inductor for the transmission line?

1931

---

what about GD square and its important for motor design?

3810

---

Why is ignitor used in sodium vapour lamp

3547

---

Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

1190

---

Who are the manufacturer for Nitrogen based Fire Protectio/explosion prevention for Oil Filled Transformers? India and international both?

1913

---

If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.

2266

---

Whether 3 phase induction motorwith 100 hp capacity , Amp 160 for which sensitive earth fault relay , type CTUM 15 can be used?

1498

---

What is difference between Over Current & Earth Fault protection?

2435

---

What are the special cables required for explosion proof wiring?

3559

---

for what purpose the star point is done in ct

1406

---

i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

1930

---

what is the function of anti pumping relays? what is KVAR? How it is generated in alternator? What is 3rd Harmonics? What is IDMT relay?

2290

---

Give some example of fault limiting devices?

1352

---

Name two types of electrical analogous for mechanical system.

1206

---