ICSE Class 8 Answered
Is an automatic fire alarm an application of bimetallic strip?
Asked by anushkaverma3606 | 02 Feb, 2021, 11:16: PM
Expert Answer
Yes, an automatic alarm is an application of bimetallic strip. The bimetallic strip (made of iron and brass) expands on the occurence of fire. The heat of fire causes the expansion of metals of bimetallic strip. As iron and brass expands at different rate the expansion of bothe metals causes bimetallic strip to bend. Due to this strip touches the screw which is adjacent to it and thus complete the circuit. Thus, the automatic bell rings.
Answered by Shiwani Sawant | 03 Feb, 2021, 11:26: AM
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