Mercury is often used in barometer because the height of barometer will be less both (B) and (C) it is the best liquid its vapour pressure is so low that it may be neglected TRUE ANSWER : ? YOUR ANSWER : ?
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the force of friction force of cohesion force of diffusion force of adhesion 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 50 M/SEC 33 M/SEC 40 M/SEC 22.5 M/SEC TRUE ANSWER : ? YOUR ANSWER : ?
The resultant of all normal pressures acts at metacentre at center of pressure at e.g. of body vertically upwards TRUE ANSWER : ? YOUR ANSWER : ?
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than 5.0 above the hydraulic gradient 6.4 m above the hydraulic gradient 10.0 m above the hydraulic gradient 2.4 m above the hydraulic gradient TRUE ANSWER : ? YOUR ANSWER : ?
When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies as the square of the radial distance inversely as the radial distance linearly with radial distance inversely as the square of the radial distance TRUE ANSWER : ? YOUR ANSWER : ?
For a floating body to be in equilibrium center of buoyancy and e.g. must lie on same vertical plane All of these meta center should be above e.g. a righting couple should be formed TRUE ANSWER : ? YOUR ANSWER : ?
The difference of pressure between the inside and outside of a liquid drop is p = T/2r (b)p = T/r (a)p = Txr (d)p = 2T/r TRUE ANSWER : ? YOUR ANSWER : ?
A fluid is said to be ideal, if it is inviscous and compressible inviscous incompressible inviscous and incompressible TRUE ANSWER : ? YOUR ANSWER : ?
Fluid is a substance that has the same shear stress.at a point regardless of its motion always expands until it fills any container cannot remain at rest under action of any shear force cannot be subjected to shear forces TRUE ANSWER : ? YOUR ANSWER : ?