Answer Posted / shivanand

KVA=KW/cos of angle b/w v and i

KVAR= kw*tan of angle b/w v and i

how to calculate energy of 3-phase motor?

1989

---

What is the loss of transformer of 220kv/11kv, 63/80 MVA and 18.05% impedance

1939

---

i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?

2143

---

WHY BREAKER ARE USED IN SUBSTATIONS?

2169

---

How can we decide cable size from HT panel to Transformer? Please give you reply with some examples.

2154

---

what is upper impedance and lower impedance of a distance relay

1972

---

what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks

1915

---

WHAT KIND OF LIGHTENING PROTECTION SCHEMS CAN BE ADOPTED FOR THE FLAT ROOF OF BIG DIMENSION.

2067

---

How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?

1972

---

in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

1842

---

dear sir, i completed diploma in electrical in 2005, how i can get electrical supervisor liance in mumbai

1930

---

Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

1826

---

what is the use of the puls transformer in UPS & how it works???????????

2164

---

What is the power factor of a transformer at no load?

1051

---

What should be the amps for a MV fuses for transformer 630kVA 20(10)/0.4 kV

1979

---