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The given symbol represents __________(a) Heater(b) Electric bell(c) Lamp(d) Tower railI have been asked this question in homework.My enquiry is from Building Plans in section Building Plans, PERT and CPM of Construction & Building Materials

Answer»

The correct OPTION is (b) Electric bell

The best I can explain: The SYMBOL given above represents an electric bell. An electric bell is a mechanical bell which is widely used in telephones, FIRE alarms, ETC.



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