To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than____________________?
(A) 2.4 m above the hydraulic gradient
(B) 6.4 m above the hydraulic gradient
(C) 10.0 m above the hydraulic gradient
(D) 5.0 above the hydraulic gradient
(D) none of the above
The vapour pressure over the concave surface is______________________?
(A) less man the vapour pressure over the plane surface
(B) equal to the vapour pressure over the plane surface
(C) greater than the vapour pressure over the plane surface
(D) zero
(D) none of the above
The process of diffusion of one liquid into the other through a semi-permeable membrane is called_______________________?
(A) viscosity
(B) osmosis
(C) surface tension
(D) cohesion
(D) diffusivity
The continuity equation is connected with__________________?
(A) viscous/unviscous fluids
(B) compressibility of fluids
(C) conservation of mass
(D) steady/unsteady flow
(D) open channel/pipe flow
Newton’s law of viscosity is a relationship between____________________?
(A) shear stress anctthejiate of angular distortion
(B) shear stress and viscosity
(C) shear stress, velocity and viscosity
(D) pressure, velocity and viscosity
(D) shear stress, pressure and rate of angular distortion
Pressure of the order of 10″‘ torr can be measured by__________________?
(A) Bourdon tube
(B) Pirani Gauge
(C) micro-manometer
(D) ionisastion gauge
(D) McLeod gauge
An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of__________________?
(A) 1
(B) 1.2
(C) 0.8
(D) 0.75
(D) 1.25
Mercury is often used in barometer because____________________?
(A) it is the best liquid
(B) the height of barometer will be less
(C) its vapour pressure is so low that it may be neglected
(D) both
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea__________________?
(A) Venturimeter
(B) Orifice plate
(C) hot wire anemometer
(D) rotameter
(D) pitot tube
The density of water is 1000 kg/m3 at__________________?
(A) 0°C
(B) 0°K
(C) 4°C
(D) 20°C
(D) all temperature