Answer / kuruvilla chacko

ohms law is applicable only to linear systems.a transformer
due to magnetic hysteresis and saturation is non linear and
doesnt follow the ohms law

why transformer is rated in kva?

2 Answers  

---

why transmission voltages are in multiple of 11kv?

10 Answers  

---

last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?

1 Answers   Siemens,

---

Define transfer function?

0 Answers  

---

what is a speed of rotor when we give supply to stator of 50hz and as well as rotor of 60hz of an induction motor?????

0 Answers  

---

---

Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

0 Answers   Pride Hotels,

---

how does this job compare with others you have aplied for?

0 Answers  

---

Why is a synchronous motor always star connected??

0 Answers   Bhushan Power Steel,

---

why in US MAINTAIN 60hz,110volts when compared with 50hz,220v in india

2 Answers  

---

What is the difference between MPP, APP, Mixed Dielectric power capacitors? Which technology is superior in current scenario?

5 Answers  

---

If the capacity of water Tank is 50000 Liters situated at 20 meters height from ground level,What would be the size of pipe and how much USGPH water will be supplied and what will be the motor or pump rating used for this work?Illustrate by showing formula?

1 Answers  

---

tell me the various standerd of CT ratio

1 Answers   ICA,

---