Maintenance of pressure instrument

What is the SI unit of pressure?

• Pascal (Pa)

• Bar

• Psi

• Newton

What is the atmospheric pressure on the earth's surface in psi?

• 14.7

• 0.068

• 15.5

• 10

What type of pressure is above atmospheric pressure?

• Absolute Pressure

• Differential Pressure

• Vacuum

• Gauge Pressure

What is the pressure below atmospheric pressure in psi?

• 10

• 15.5

• 0.068

• -14.7

What is the zero in a pressure gauge scale?

• 0 atmospheric pressure

• 14.7 perfect vacuum

• 15.5 psi

• 10 bar

What is the name of the c-shaped tube used in mechanical pressure sensors?

• Bourdon tube

• Diaphragm

• Bellows

• Capacitance type sensor

Which type of sensor is based on the principle of capacitance?

• Strain gauge sensor

• Piezo-resistive sensor

• Capacitance type sensor

• Piezoelectric sensor

Which type of sensor is based on the principle of strain and resistance ?

Answer explanation

Strain gauge

Which type of sensor is based on the principle of resistance ?

• Piezo-electric sensor

• Piezo-resistance sensor

• Capacitance sensor

• All of the above

Which type of sensor is based on the principle of voltage ?

• Piezo-electric sensor

• Piezo-resistive sensor

• Strain gauge

• Non of the above