Answer / shoebullah

T= k*sf*R2*E2^2/
R2^2+sf^2*X2^2

Where E2 is induce rotor emf,
Sf is the full load slip and
k=3/2pi*Ns

No load torque :- the torque
develop by the motor under
no load condition is known as
no load torque

How the size of electic machine vary with the sped? Between slow and fast running machines of equal ratings, which one is more economical to design?

1 Answers  

---

why dc is not given to transformer

4 Answers  

---

what is different between buchhoz relay and pressure relife devices in transformer

2 Answers   Spanco,

---

3 phase Motor will be given 2 phase after 2 to 5 second we given 3rd phase so Motor Run sum-time in forward or sum time run reverse direction. All time phase sequence is not change. Why motor run in reverse direction? Please Explain........

0 Answers  

---

what is the reason of current flow in nutral although load is balanced (three phase equal current)

3 Answers  

---

what is the function of starter & choke in the tube light set & how choke give 1000 volts while switching on.

14 Answers   ADNOC Abu Dhabi National Oil Company, IBM,

---

From an electrical motor & electrical generator, which has more efficiency & why?

1 Answers   Sahi,

---

Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

0 Answers   Bhel,

---

can we measure +,-.zero sequence current ....? if so how can ???

2 Answers   NLC,

---

what do you understand by dressing a HT/LT pole

1 Answers   Federal Polytechnic Nekede,

---

While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

0 Answers  

---

How many wall/floor flange will i use in bus duct system if we have in our design a 35th floor building.

0 Answers  

---