Q) how how does an automatic fire alarm works ? explain in detail.
give me the correct answer in my book it's too difficult.. and please don't copy from internet..
Answers
Answer:
A fire alarm system warns people when smoke, fire, carbon monoxide or other fire-related emergencies are detected. These alarms may be activated automatically from smoke detectors, and heat detectors or may also be activated via manual fire alarm activation devices such as manual call points or pull stations.
Answer:
The passage of smoke into the chamber causes the light from the source to be scattered and fall on the photocell. The photocell output is being used to initiate an alarm. In the Light obscuring smoke detector, smoke interferes with a light beam between a light source and photocell.
Explanation:
samriddhi ne face reveal kiya tha apna bhi aur mera bhi, woh actually geography project mila hai an, kal submit bhi karna hai usse, usme hume interview lena tha, to usne usi ki photo sabko dikha di, mujhe aur usse dekhna hai to uska ek question hai "What is an interview" usme dekh lo, aur maine bhi aaj apna face reveal kiya ek chemistry ke answer mein, i am in red shirt in that photo, well tum kabhi karogi?
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