Answer / praveen

as led consists of parasitic capacitance during the supply it gets charged and discharges the stored energy when supply is not there this causes led to glow for some time

Answer / ghanshyam singh

but Mr. praveen, the led glows for a long time, often more
than one hour, and this is also rare i.e it does not happens
all time that led glows. sometime it turns off with the
supply.

Answer / ghanshyam singh

i think it's due to the leakage current/ flux.

can we use ELCB and RCBO in one db

6 Answers  

---

is EEE eligible for getting electrical supervisor certificate ? if yes then from which state i sud apply

1 Answers   ONGC,

---

In Transformer testing at Shop test we normally test for vector group, open ckt.,short ckt. but what are the other test performed for transformer once it reaches at site.For e.g:if the transformer is dry having rating 1000KVA?

2 Answers  

---

Why more than 2.5 MVA distribution transformers (secondary is 440V)are not used in india.

1 Answers  

---

what is difference b/w bus duct & bus bar.

2 Answers  

---

The synchronous speed of a motor with 6 poles and operating at 50 Hz frequency is ___.

4 Answers  

---

wath is this mining of bts

2 Answers   Nokia,

---

what is the difference between b c d curves on mcb

0 Answers  

---

What is meant by pilot exciter and its working?

2 Answers  

---

hey guys help me out.....what  are the industrial uses/functions of nozzles in industries 

0 Answers  

---

What is the physical significance of phase.. i.e. what is exactly the meaning in layman's language.. 1 phase, 3 phase etc ???

0 Answers   L&T,

---

What is it mean Transformer 100/133MVA Power Transformer, significance of 100/133 MVA and 230/115KV please

3 Answers  

---