Answer / omar aziz

There are many things that need consideration while
protecting a motor. Motor faliures mainly occur due to
winding faliure. This could be due to overcurrent ,
overvoltage, etc... Back in the early days people strongly
relied on fuses but now we have motor protection relays
that monitor tempratures , currents , voltages etc.. ex GE
MULTILIN MOTOR PROTECTION RELAY

Answer / kalolia alap r

depend on the kind of current,i.e both a.c and d.c required
protection.. motor required starters,like basic D.O.L etc.
in small motor we do not required armature resistance but in
large size of motor,we required large armature
resistance..basicaly required component is resistence in
megaohms and some times induction regulator like auto
transformers....

what is the path of thunderlightening? once both a buffalo and a person were standing 5m apart but lightening hit and killed buffalo not person?

0 Answers  

---

how megger step up the DC voltage

1 Answers   Voltech,

---

What are the three constants associated with a steady state error?

0 Answers  

---

What is Biased Generator Differential Relay?

2 Answers  

---

When dc supply is fed to rotor of the alternator how it work?

0 Answers  

---

---

hi i am aziz electrical associate engineer. i am faceing problem in acs800 vvvf drive.it is tripping wothout any alarm/fault.i cheaked all parameters and fault function of drive, all are correct as well as communication parameters.but still it is tripping (drive is tripping in running position not in starting)

1 Answers  

---

why normally Generator rating are between 11Kv to 22Kv?

2 Answers   IFFCO,

---

solar cell voltage?

2 Answers  

---

how circuit breaker work.. what is the operations taking place inside a circuit breaker when an overcurrent occurs... is it similar to fuse?

0 Answers   LTT,

---

Let me know that how i calculate the alternator sub tranciant reactance and tranciant reactance.

0 Answers  

---

if we connect a ohmmeter across shorted capacitor .what will be the reading..will it be zero or infinity

2 Answers  

---

what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.

0 Answers  

---