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 the meaning of STAR POINT? Why this important in CT and VT?

2 Answers   L&T,

---

How can Inductive load reduce the line voltage of HV transmission line and vice versa Capacitive load?

1 Answers  

---

is there any pottential in neautral?

3 Answers  

---

What is R/X ratio? I have heard that this ratio is higher in a radial distribution system.Why is it so? I would appreciate a word. Thank you

1 Answers   Power Grid, Vignan University,

---

before synchronizing an alternator,power factor is leading ,why?

0 Answers   CUMI,

---

---

HT motors are generally connected in star, what will be the effect if we connect HT motor in Delta?

6 Answers   Equate, Ion Exchange,

---

how to measure the A.C flux .-instrument

8 Answers   NTPC,

---

How to connect surge arrester with equipment?

1 Answers   Godrej,

---

what is meant by surge? what we called for high currents?

0 Answers  

---

what collector is used for 100kmph-120kmph tracion application?

3 Answers   APTransco,

---

In a house wiring why we are using only one neutral wire and so many phase wires from the main board, when the load is common for both wires?

3 Answers  

---

If i am running of spindle at 2000rpm ,but How to spindle stop at the second I am resetting the machine in CNC machines

0 Answers  

---