HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

In axial flow fans and turbines, fluid enters and leaves as follows

Axially, axially

Radially, axially

Radially, radially

Axially, radially

TRUE ANSWER : ?
YOUR ANSWER : ?

The optimum value of vane exit angle for a centrifugal pump impeller is

10-15°

30-40°

20-25°

50-60°

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Inversely proportional to the depth of liquid from the surface

Directly proportional to the area of the vessel containing liquid

Directly proportional to the length of the vessel containing liquid

Directly proportional to the depth of liquid from the surface

TRUE ANSWER : ?
YOUR ANSWER : ?

The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is

24.8 r.p.m.

82.4 r.p.m.

248 r.p.m

48.2 r.p.m

TRUE ANSWER : ?
YOUR ANSWER : ?

A turbine develops 10000 kW under a head of 25 meters at 135 r.p.m. Its specific speed is

175.4 r.p.m.

241.5 r.p.m.

215.5 r.p.m.

275.4 r.p.m

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Air lift pump

Hydraulic coupling

Hydraulic press

Jet pump

TRUE ANSWER : ?
YOUR ANSWER : ?

Kinematic viscosity is equal to

1/dynamicviscosity x density

density/dynamic viscosity

dynamicviscosity x density

dynamic viscosity/density

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

√2

43832

1

1/√2

TRUE ANSWER : ?
YOUR ANSWER : ?

A flow in which __________ force is dominating over the viscosity is called turbulent flow.

Inertia

Elastic

Viscous

Surface tension

TRUE ANSWER : ?
YOUR ANSWER : ?

A fluid having no viscosity is known as

Ideal fluid

Real fluid

Non-Newtonian fluid

Newtonian fluid

TRUE ANSWER : ?
YOUR ANSWER : ?