1.If a pressure of 400 Pa acts on 20 m2 area, what is the value force?
a) 2 KN
b) 4 KN
c) 6KN
d) 8KN
Explanation: Force = Pressure*Area.
2. Given that both liquid A and liquid B exert the same amount of pressure, what would be the height of column of liquid A if the density of liquid A is twice the density of liquid B and the height of column of liquid B is 10 cm?
a) 5 cm
b) 10 cm
c) 20 cm
d) None of the above
Explanation: Dgh = Constant.
3. Atmospheric pressure is the pressure at a point due to the weight of the air above it.
Above given statement is
a) Incorrect
b) Correct
c) Partially correct
d) None of the mentioned
Explanation: Atmospheric pressure is the pressure at a point due to the weight of the air above it.
4. 25 psia is equal to
a) 25.88 in Hg
b) 50.88 in Hg
c) 75.88 in Hg
d) 100.88 in Hg
Explanation: 25 psia = (25*29.92)/14.7 = 50.88 Hg.
5. 40 psia equals
a) 175.64 kPa
b) 275.64 kPa
c) 375.64 kPa
d) 475.64 kPa
Explanation: 40 psia = (40*101.3)/14.7.
6. 56 in Hg equals
a) 13.76 psia
b) 27.52 psia
c) 28.56 psia
d) 57.12 psia
Explanation: 56 in Hg = (56*14.7)/29.92 = 27.52 psia.
7. 1 atm pressure equals to
a) 29.92 in Hg
b) 25.65 in Hg
c) 27.68 in Hg
d) 24.74 in Hg
Explanation: 1 atm = 29.92 in Hg.
8. 760 mm Hg equals
a) 33.94 ft H2O
b) 22.56 ft H2O
c) 11.24 ft H2O
d) None of the mentioned
Explanation: 760 mm Hg = 1 atm = 33.94 ft H2O
9. Piezometer is used for the pressure measurement of only _______
a) Solid
b) Liquid
c) Gas
d) None of the mentioned
Explanation: Piezometer is used for the pressure measurement of only liquid.
10. If the open end manometer`s open end is closed and in the blank area there is vacuum. The manometer measures
a) Absolute pressure
b) Gauge pressure
c) Atmospheric pressure
d) Vacuum
Explanation: If the open end manometer`s open end is closed and in the blank area there is vacuum. The manometer measures absolute pressure.