Answer / sachin k

Reverse power,E/F,over load,Over frequency,Under
Frequency,Over voltage,under voltage,loss of
excitation,short circuit etc.

Answer / ravi tandel

reverse power protection, merz price protection, etc.

difference b/w series&parallel

4 Answers   ABB,

---

what is preventive maintenance? and what is predictive maintenance? and what diffrence both?

3 Answers   Volkswagen,

---

why cannot we use a freuency more than 400hz is used in aircrafts?

1 Answers  

---

define hysteresis loss, eddy current loss and windage loss

0 Answers  

---

What is Grounding? any difference b\w earthing? if yes plz explan??

3 Answers   ABB,

---

---

Difference between ups and invertor

3 Answers  

---

What is the difference between Welding Transformer and Normal Transformer?.

2 Answers   DAE,

---

a wire in which bulb is connected there is two terminal when one terminal is connected to phase than why the value of current shock in nutral terminal is max. or large??

4 Answers  

---

How to decide the size of the capacitor for a single phase induction motor say 2 HP ??

0 Answers  

---

In a 3 phase squirrel cage induction motor why does rotor rotate? will 3 phase transformer rotate like a motor if it is placed on bearings and powered up? give reason

10 Answers   Siemens,

---

What are the three types of compensators?

0 Answers  

---

what is the rating of Insulation tester for measure 15 KW, 3 phase 415V 50 HZ induction motor?

2 Answers   ABB,

---