Answer / sanjeet swarnakar

Ro -resistance at o degre centigrade
Rt -resistance at t degre centigrade
we have formula
Rt = Ro(1+alpha t)
here alpha is cofficient of resistivity

Answer / anand

Rt = Ro(1+alpha *Delta t)

Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.

0 Answers  

---

How to calculate cable size for a particular load? i have 12 MW,11KV Motor 3 Phase, what should be cablesize? What are the points to remember for cable sizing calculations?

2 Answers  

---

please explain how to do 'pole drop test' on generator?

0 Answers  

---

what is the principle of generator, motor, and transformer and explain the definiton of flemings left hand rule , right hand rule and ohms law

2 Answers   NFCL,

---

During the troubleshooting of an inoperative shunt generator, you found the voltage to be 2+ volts; what is known from this. Is it (1). odds are the armature is good (2). odds are there is no field current flowing in field windings (3). odds are the armature is bad (4). both 1 & 2 are correct (5). both 2 & 3 are correct

2 Answers   Air Force,

---

---

Why starters are using the machines???

5 Answers   Alstom,

---

highest rating of alternator used in india

1 Answers  

---

The slip during plugging operation is given by= A 1-s B 2+s C 1+s D 2-s

0 Answers  

---

why there using acb enclosure in big buildings

0 Answers   Tata Power,

---

What is the difference between Surge protection device and Lighting arrester?

6 Answers  

---

Why CTs are connected in star on T/F delta connected winding side & in delta on T/F star connected winding side for T/F differential protection?

2 Answers  

---

what is the current rating of 2500 KVA,33KV/433v transformer on secondary(LT) side

9 Answers   Reddy Labs, Vitrum Glass,

---