Answer / gunasekaran

transformer inrush current having more 2nd horminics it
will give the false trip to diffrential protection

Answer / sudheer868

It has frequency 2 times that of fundamental.Second
harmonics does not effect transformer as the supply is
symmetrical.If supply is symmetrical even harmonics are
automatically eliminated.

if its possible for step up or step down DC volage directly ? possible means how we can do it ?

5 Answers  

---

why we use star connection in HT motor? and delta connection in LT motor

2 Answers   npcc,

---

what is droop control?

0 Answers   BARC,

---

What are the various reasons for an inductin motor to get heated?

1 Answers   Monnet,

---

For Synchronisation of DG Sets Sometimes we people use NIC (Neutral Isolation Contactor) Instead of 4-pole ACB or any switchgerar..Please guide me why is it so????

4 Answers   Piramal Glass Limited,

---

Why more sound is produced in mixer than grinder

2 Answers   Vedant,

---

for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv

0 Answers  

---

dear friends plz send link about reluctance & universal motor .thank u

4 Answers  

---

what happens if we give 1-ph supply for 3-ph Bridge rectifier...??

2 Answers   Sanelec,

---

Where there is voltage,there must be current.Is this right or wrong??

10 Answers  

---

what is difference between window type and wound type transformers?where we will use window type and wound type transformers?

0 Answers  

---

What is the technical difference between On delay timer and a Star delta timer?

0 Answers   Roche,

---