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Question
A measurement referenced to the atmospheric pressure and it varies from the measurement of barometric reading and manometer reading is called as
A measurement referenced to the atmospheric pressure and it varies from the measurement of barometric reading and manometer reading is called as
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Solution
The correct option is A gauge pressure
Absolute pressure: It uses absolute zero (pressure in vacuum) as its zero point.Gauge pressure: It uses atmospheric pressure as its zero point.Therefore, Absolute pressure = Atmospheric pressure + Gauge pressureA barometer reads the atmospheric pressure and a manometer reads absolute pressure (when closed from one end), therefore a measurement referenced to the atmospheric pressure varying from barometer reading and manometer is called as gauge pressure.
Absolute pressure: It uses absolute zero (pressure in vacuum) as its zero point.
Gauge pressure: It uses atmospheric pressure as its zero point.
Therefore, Absolute pressure = Atmospheric pressure + Gauge pressure
A barometer reads the atmospheric pressure and a manometer reads absolute pressure (when closed from one end), therefore a measurement referenced to the atmospheric pressure varying from barometer reading and manometer is called as gauge pressure.
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