For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be 675 600 337.5 300 TRUE ANSWER : ? YOUR ANSWER : ?
The Prartdtl mixing length is independent of shear stress zero at the pipe wall None of these maximum at the pipe wall TRUE ANSWER : ? YOUR ANSWER : ?
A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of 4.0 M 4.6 M 4.8 M 4.2 M TRUE ANSWER : ? YOUR ANSWER : ?
An open vessel of water is accelerated up an inclined plane. The free water surface will any one of above is possible be horizontal make an angle in direction of inclination of inclined plane make an angle in opposite direction to inclination of inclined plane TRUE ANSWER : ? YOUR ANSWER : ?
Mercury is often used in barometer because both (B) and (C) it is the best liquid its vapour pressure is so low that it may be neglected the height of barometer will be less TRUE ANSWER : ? YOUR ANSWER : ?
In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is 22.5 M/SEC 33 M/SEC 40 M/SEC 50 M/SEC TRUE ANSWER : ? YOUR ANSWER : ?
Surface energy per unit area of a surface is numerically equal to atmospheric pressure force of adhesion surface tension force of cohesion TRUE ANSWER : ? YOUR ANSWER : ?
The resultant of all normal pressures acts at center of pressure at metacentre at e.g. of body vertically upwards TRUE ANSWER : ? YOUR ANSWER : ?
The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is 1/4 1/3 1/2 2/3 TRUE ANSWER : ? YOUR ANSWER : ?
Coefficient of velocity for Borda’s mouth piece running full is 1.00 0.611 0.855 0.707 TRUE ANSWER : ? YOUR ANSWER : ?