Piezometer is used to measure_____________________?
(A) pressure in pipe, channels etc.
(B) atmospheric pressure
(C) very low pressures
(D) difference of pressure between two points
(D) flow
Euler’s dimensionless number relates the following__________________?
(A) inertial force and gravity
(B) viscous force and inertial force
(C) viscous force and buoyancy force
(D) pressure force and inertial force
(D) pressure force and viscous force
Which of the following manometer has highest sensitivity_________________?
(A) U-tube with water
(B) inclined U-tube
(C) U-tube with mercury
(D) micro-manometer with water
(D) displacement type
Working principle of dead weight pressure gauge tester is based on_______________?
(A) Pascal’s law
(B) Dalton’s law of partial pressure
(C) Newton’s law of viscosity .
(D) Avogadro’s hypothesis
(D) Second law of thermodynamic
Center of pressure compared to e.g. is___________________?
(A) above it
(B) below it
(C) at same point
(D) above or below depending on area of body
(D) none of the above
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called_______________?
(A) upthrust
(B) reaction
(C) buoyancy
(D) metacentre
(D) center of pressure
A body floats in stable equilibrium ____________________?
(A) when its meatcentric height is zero
(B) when the metancentre is above e.g.
(C) when its e.g. is below it’s center of buoyancy
(D) metacentre has nothing to do with position of e.g. for determining stability
(D) none of the above
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?
(A) the area is horizontal
(B) the area is vertical
(C) the area is inclined
(D) all of the above
(D) none of the above
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is____________________?
(A) 2.4 m
(B) 3.0 m
(C) 4.0 m
(D) ”2.5 m
(D) 5.0 m
The difference of pressure between the inside and outside of a liquid drop is _______________?
(A) p = Txr
(B) p = T/r
(C) p = T/2r
(D) p = 2T/r
(D) none of the above