Answer / arulkumaran

POWER FACTOR = 0.85 (APP)
KVA = KW/PF
KVA = 75/0.85
KVA = 88.235
SO,average kva of auto transformer 90KVA (APP)

Answer / baikunth

motor rating in kva = 75/0.5=150kva
so the apparent power is let 200kva.
Keeping the starting condition and fault conditions like
overload,single phasing etc. I suggest 200x3=600kva or
750kva a standard value for the motor of 75kw,supposing that
transformer ration is 1:1.

How to Prepare preventive maintenance shedule of machine tool.

1 Answers   Concast,

---

Define peak overshoot.

1 Answers  

---

I AM A ELECTRICAL PANEL BOARD DESIGN ENGINEER.IF I GO ANY INTERVIEW ,TECHNICALLY WHAT ARE QUESTIONS I WILL FACE FROM INTERVIEWER?

1 Answers   Bell,

---

How to calculate % Impedence?

3 Answers   ISRO,

---

In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

1 Answers  

---

with help of neat sketch explain principle of TIG welding process

1 Answers  

---

IS there any special instructions to be taken while installing the tranformer.

1 Answers  

---

what are the various types of earthing? plz give brief detail of all. also post pictures if u have.

22 Answers   Aster Teleservices, Era Infra Engineering, Micron Electricals,

---

How to know the Max. current caring capacity of the cable by its size ?

1 Answers   SFPL,

---

why a pure inductive circuit has zero power output?

8 Answers  

---

Mention what are the different colors on wires indicates?

1 Answers  

---

How can you calculate in detail the VA burden of current transformer used for Restricted earth fault protection? Please understand that the CT required here is Class PX or X. Also please show the calculations for knee point vtg, stabilizing resistor, magnetising current.

3 Answers  

---