Q. A flow is called hyper-sonic, if the Mach number is

View solution

Q. The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

View solution

Q. The intensity of pressure at any point, in a liquid, is

View solution

Q. If the depth of water in an open channel is greater than the critical depth, the flow is called

View solution

Q. A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

View solution

Q. The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)

View solution

Q. The liquid used in manometers should have

View solution

Q. The hydraulic mean depth or the hydraulic radius is the ratio of

View solution

Q. The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as

View solution

Q. A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

View solution

Q. Stoke is the unit of

View solution

Q. One poise is equal to

View solution

Q. Reynold's number is the ratio of the inertia force to the

View solution

Q. A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

View solution

Q. A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

View solution

Q. The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

View solution

Q. Turbulent flow takes place at high velocities.

View solution

Q. When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.

View solution

Q. The hydraulic mean depth for a circular pipe of diameter (d) is

View solution

Q. The tangential velocity of the water element having a free vortex is

View solution