Pressure Measurement

Quiz Questions

 1. Manometers are differential pressure sensors. True False 2. In the equation Pgauge = Punknown – Patm = ρgh , what does ρ stand for? Volume of the liquid Density of the liquid Pressure of the liquid None of the above 3. The inclined tube manometer is more suitable for use with smaller pressure measurements or where greater accuracy is required. True False 4. A pure vacuum is a space totally devoid of any matter, which therefore has______________. Pressure No pressure Pressure but difficult to measure None of the above 5. The aneroid barometer senses atmospheric pressure by means of liquid. True False 6. Bellows are differential pressure sensing devices mainly used in low pressure ranges of about 0 to 1000 pascals. The pressure applied to the bellows Punknown is given by the equation ___________ ? Punknown = (d xA)λ Punknown = d x A x λ Punknown = (d/A)λ Punknown = (d λ /A) 7. Because of the sensitivity of diaphragm based pressure sensors, they are used to measure _________ changes in pressure. Small Large Very high None of the above 8. There are various shapes of Bourdon tube including helical, spiral and twisted. True False 9. Capacitive pressure sensors use the ________ property of capacitance to measure the displacement of a diaphragm. Electrical Mechanical Electronic Digital 10. How many piezo resistors are on the diaphragm form a Wheatstone bridge. Two Three Four Five