Answer / alianwar

A Light Emitting Diode lamp is a solid state lamp (SSL)
that uses light-emitting diodes (LEDs) as the source of
light. Since the light output of individual light-emitting
diodes is small compared to incandescent and compact
fluorescent lamps, multiple diodes are used together. LED
lamps can be made interchangeable with other types, but the
presently at a higher cost. Most LED lamps must also
include internal circuits to operate from standard AC
voltages. LED lamps offer long life and high efficiency,
but initial costs are higher than for flurorescent lamps.

what is cable meggering formula for low voltage ?

0 Answers  

---

What is the electrical difference between Earthing Switch (ES) and Maintenance Earthing Switch (MES)?

1 Answers  

---

When we use 3 terminal resistor?

0 Answers  

---

what type of motor is used in fan

6 Answers  

---

I have 480V Single phase and I am trying to figure how big of a transformer (KVA's) and Primary breaker size I need to provide 200 Amps at 240V for a building.

1 Answers   Wipro,

---

does meager test perform on lightning arrester ? if doesn't then why ?

1 Answers  

---

Why DC exitation to AC Generator? Why not AC?

2 Answers   Equate,

---

Rotor resistance starter is used to obtain= A increased starting torque B decrease starting current C decrease starting loss D increase efficiency

1 Answers  

---

Refernce currents are to be generated using refernce cueernts how can this be done

0 Answers   ABC, Wipro,

---

What is burden of ct,explain very simple

2 Answers   KSEB,

---

Neutral CT for 45MVA 132/11 KV YNd11 Transformer. NCT REF CLASS-PS or 5P20 with 20VA burden which is suitable.

1 Answers  

---

What is the differance between transformer neutral solidly earthed and transformer neutral earthed through resistor?

1 Answers   L&T,

---