Answer / ravi

By Smoke Simulation Method.......

Answer / joy

simplest way is apply a certain volume of smoke in a room
where the detector is placed that would be enough to trigger
the SD to send an alarm signal to its control panel that is
if this is not just the battery operated one.

Answer / kannara

You can use magnet for test smoke detectors.hold a magnet near to the detector,the detector will activate with in seconds and give fire signal to main panel

Answer / arun kumar .k

In smoke detector uisng the Bymetalic strips
It is like nc/no contact when temprature increase it will
trigger the hooter circuit

what is V0/V rating of cable

1 Answers  

---

I want to know the currect formula for industrial lighting lux caluculation & light fittings selection

2 Answers   MRF,

---

What is the average hieght of a electrical tower? what are the factors that are taken into consideration for deciding its hieght other than voltage level?

1 Answers  

---

what happens if we give 1-ph supply for 3-ph Bridge rectifier...??

2 Answers   Sanelec,

---

Which oil is used in Transformer?

6 Answers  

---

why we use MV panels??? what's r all the needs

4 Answers  

---

what is the difference between synchronization and paralleling?

13 Answers   BARC,

---

how is positive, negative, zero sequence is happen.. how is effect on 3 phase system

0 Answers  

---

WHAT IS THE DIFFERENCE BETWEEN UNDERVOLTAGE COIL, CLOSING COIL AND SHUNT TRIP COIL OF AN ACB?

2 Answers   Alstom,

---

Why we use Carbon & graphite mixxed brushes in the DC motor?

6 Answers  

---

the circuit having same properties in either direction is known as.......

2 Answers  

---

How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.

0 Answers  

---