Hydraulic and Fluid Machines - Interview Questions | Exam2Win

Take a timed mock test specifically for Hydraulic and Fluid Machines.

166. Euler's dimensionless number relates the following

A. inertial force and gravity

B. viscous force and inertial force

C. viscous force and buoyancy force

D. pressure force and inertial force

E. pressure force and viscous force.

Explanation:

167. Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

A. Venturimeter

B. Orifice plate

C. hot wire anemometer

D. rotameter

E. pitot tube.

Explanation:

168. The centre of pressure of a surface subjected to fluid pressure is the point

A. on the surface at which resultant pres-sure acts

B. on the surface at which gravitational force acis

C. at which all hydraulic forces meet

D. similar to metacentre

E. where pressure equivalent to hydraulic thrust will act.

Explanation:

169. Buoyant force is

A. the resultant force acting on a floating body

B. the resultant force on a body due to the fluid surrounding it

C. equal to the volume of liquid dis-placed

D. the force necessary to maintain equi-librium of a submerged body

E. none of the above.

Explanation:

170. The speed of sound in a ideal gas varies directly as its

A. pressure

B. temperature

C. density

D. modulus of elasticity

E. absolute temperature,

Explanation: