Answer / shri..

In case of fire it should give alarm & it should indicate
where fire is occurred.

Shriram

Answer / nagarjuna

THERE IS A DEVICE WHICH SENDS RAYS FROM ONE TERMINAL TO
OTHER TERMINAL(LIKE CAPACITOR)
LIKE
-------/ /-------
BETWEEN THESE A RAY WIL TRAVEL ,IF FIRE
WILL OCCUR MEAN ,SMOKE WILL FORM ,THAT SMOKE WILL BARRIER
THE LIGHT ,SO LIGHT WILL NOT ENTER FROM ONE TERMINAL TO
OTHER .SO THAT THE SENSOR SENSES THAT AND BLOW ALARM.

Answer / bmw6633@gmail.com

when ever there is any case of fire sensor detects smoke
and give alarm so that only the hazards teem go in to do the
need full

Answer / bmw6633@gmail.com

when ever there is any case of fire sensor detects smoke
and give alarm so that only the hazards teem go in to do the
need full

Answer / shalini

Fire Alram System is an automated system for monitoring the
Fire / smoke incidents in a building. All the smoke
detectors, ineregen system , vesda system, etc will be
integrated to FA system and alram activation will pop up in
FA system during any abnormlities

As per IS why should the control be taken only from R phase, why not from B or Y phase??!!

2 Answers  

How to Convert horsepower to kva? what is the three phase formula? email me if u know thanks Rehan smileavail@msn.com

3 Answers  

dear friends plz send link about reluctance & universal motor .thank u

4 Answers  

why ac wave is sinusoidal not square or triangular wave what will be reason

1 Answers   ACPL,

what is reactive poower

3 Answers  

What is the temperature PROFILE OF A FLUID W. R. T. Distance from a sphere to which it is IN CONTACT which is at constant temp.?

0 Answers  

HOW TO CALICULATE THE LEAD ACID BATTERY AH AND HOW TO FIND THE 1.2KVA UPS BACKUP @ 1000WATTS LOAD?

2 Answers  

what is the voltage between the earth & neutral 2 is there any continuity TO BE between earth & NEUTRAL

3 Answers   Suzuki,

What is meant by operating sequence of VCB : 0–0.3sec.–CO– 3min.-CO

2 Answers  

what is the formula for calculating the phase clerance between two phases and phase to earth how to calculate the cable for a motor

0 Answers  

in soft starter system for 375 KW 3 ph induction motor for multi stage vertical pump, two thyristers failed causing shorting of thyrister. the motor winding failed while starting.What is the cause and what is the effect in above case

1 Answers   KPCL,

how many earthing should need for UPS, where its connected

7 Answers   HCL,