The overall efficiency of a reaction turbine is the ratio of

The breast water wheels are those in which the wheel runs partly by the weight of water and partly by the impulse of water.

The power produced by the reaction turbine is __________ to the head of water.

Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m³, Q = Discharge of the pump in m³/s, H_s = Suction head in metres, and H_d = Delivery head in metres)

A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the

The principle of jet propulsion is used in driving the ships and aeroplanes.

The ratio of actual work available at the turbine to the energy imparted to the wheel is known as __________ efficiency.

Work done by a turbine __________ upon the weight of water flowing per second.

The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.

In the casing of a centrifugal pump, the kinetic energy of the water is converted into pressure energy before the water leaves the casing.

Geometric similarity is said to exist between the model and the prototype, if both of them

The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is

Power required to drive a centrifugal pump is directly proportional to __________ of its impeller.

The mechanical efficiency of an impulse turbine is

The overshot water wheels are those in which the wheel runs entirely by the __________ of water.

In a Kaplan turbine runner, the number of blades are generally between

If H_g is the gross or total head and h_f is the head lost due to friction, then net or effective head (H) is given by

The force present in a moving liquid is

Discharge of a centrifugal pump is

A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called

The working of which of the following hydraulic units is based on Pascal's law?

The angle of taper on draft tube is

A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)

When a liquid is flowing through a pipe, the velocity of the liquid is

According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.

Which of the following is an example of laminar flow?

Which of the following instrument can be used for measuring speed of an aeroplane?

The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.