Answer / adel hesham

Speed is inverse to torque and proportional to power

So if I need a fixed speed then torque and power should change proprtionaly to fulfill the required speed constant

Also using and encoder for speed feed back helps the vfd to produce the correct torque which fulfill the stored / required speed

what are the steps involved in generator load test?

0 Answers  

---

Why only three phase power generation are load are used

2 Answers   BARC,

---

IN THE CASE OF AN ELCB, IF THERE IS ANY UNSTABILITY BETWEEN PHASE AND NEUTRAL IT MAY TRIP. BUT MY QUESTION IS WHEN A LOAD IS CONNECTED IN BETWEEN P AND N, THE LOAD CONSUMES SOME POWER AND THERE IS A DIFFERENCE IN NEUTRAL WITH RESPECT TO THE PHASE. THUS ACCORDING TO ME, THE ELCB WILL AUTOMATICALLY OPERATES WHEN EVER THE LOAD CONSUMES-- I KNOW IT IS WRONG. BUT THE SOLUTION IS?????????

1 Answers   KSEB,

---

Which types of following motors are most efficient?

0 Answers  

---

what will happen if i will done heart shape hole in transformer core?

1 Answers   Bhel, ONGC,

---

what is the formula of high voltage testing of three phase induction motor?

1 Answers  

---

I want formula to calculate cable size as per load given in kw & amp.I searched many sites but didn't right answer.Plz reply me asap.

41 Answers   Armco, BEL, BGS, Biocon, BRB Cable, Crystalline Chemical Industries, DLF, Doshion, Electrical, Gold Roof, L&T, Lanco, MEIL, Oman Cables Industry SAOG, PK Services, Polycab, Sabic, SLV, System Electrical, Tata Motors, UEM, UMIC, Vega, Vertex, Voltas,

---

what are the main Parts of VCB

1 Answers  

---

What will happen if we give the 3 phase supply to the rotor of slipring induction motor?

3 Answers  

---

how many Classification of fire extinguisher

0 Answers   Juniper Networks,

---

How to Calculate the maximum Demand required for a connected load for a manufacturing Plant

6 Answers  

---

why delta delta connection generally not use in transformer

4 Answers   Lanco,

---