Answer / elango.kalp

energy efficent motors means losses are minimised.
1.area of cross section of conductor have been increased to
reduce copper loss.
2.thickness of lamnination has been reduced and crgo
technique has been used.
3.c3 ballbearings have been used it has good clearance
between each rollers and lubrication is proper-friction
loss is reduced
4.rotor length is increased and air gap b/w stator and
rotor is reduced- windage loss is reduced
5.plastic fan has been used

the over all efficency of energy efficient motor is 93.6%

What is nyquist contour?

0 Answers  

---

if the magnetic lines can pass through a vaccuum area

0 Answers  

---

Please brief working principle & construction of permanent magnet AC Servo motor

0 Answers   DRJ ARDE,

---

why we are using auto transformer in sub station mostly???

2 Answers  

---

DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.

0 Answers   Greenko Group,

---

how many testing is necessary for 27 MVA transformer?

1 Answers  

---

why electronic instruments is more favorable than electrical?

0 Answers  

---

Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.

0 Answers  

---

why the power cut problems occur in tamil nadu? may i know the exact reason.plz

17 Answers  

---

why should we india maintain frequency of 50 Hz.

8 Answers  

---

is it possible to run a dc motor on ac supply with good performance.....?

3 Answers  

---

What is principle of Floroscent tube 36watt.

0 Answers   Diamiller, NDPL, Trident Hilton,

---