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

3 Answers   Volkswagen,

---

what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?

0 Answers   CG,

---

What principle and operation of frency drive

2 Answers  

---

We have 250 KVAR cacitor bank & our average load is 200kva but our power factor is average 0.66 how can we maintane it? how can we balance our load?

4 Answers  

---

what is power system transient condition

1 Answers  

---

---

How impulse levels are calculated that for 11kV impulse is 75kvp, for 24kV impulse is 125kvp ?

0 Answers   L&T,

---

Give two basic sprrd control scheme of DC shunt motor.

2 Answers  

---

How many lightning arrestors to be installed on 50MX60MX10M building and is there any formular for that?

0 Answers  

---

why the starting current of a motor is high?

3 Answers   ITC Infotech,

---

Differentiate between ideal and non-ideal voltage sources?

0 Answers  

---

How to take Transformer oil Break down voltage test?

9 Answers  

---

why we cannot protect 100% winding of an alternator by using differential protection?

0 Answers  

---