Mechanical Engineering Mcqs
Uniform flow occurs when ___________________?

A. The flow is steady
B. The flow is streamline
C. Size and shape of the cross section in a particular length remain constant
D. Size and cross section change uniformly along length

Non uniform flow occurs when_________________?

A. the direction and magnitude of the velocity at all points are identical
B. the velocity of successive fluid particles, at any point, is the same at successive periods of time
C. the magnitude aricf direction of the velocity do not change from point to point in the fluid
D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

An ideal flow of any fluid must satisfy __________________?

A. Pascal law
B. Newton’s law of viscosity
C. Boundary layer theory
D. Continuity equation

For measuring flow by a venturimeter, if should be installed in __________________?

A. vertical line
B. horizontal line
C. inclined line with flow downward
D. inclined line with upward flow

The time oscillation of a floating body with increase in metacentric height will be_________________?

A. Same
B. Higher
C. Lower
D. Lower/higher depending on weight of body

The normal stress is same in all directions at a point in a fluid_______________?

A. Only when the fluid is frictionless
B. Only when the fluid is incompressible and has zero viscosity
C. When there is no motion of one fluid layer relative to an adjacent layer
D. Irrespective of the motion of one fluid layer relative to an adjacent layer

Differential monometer is used to measure___________________?

A. Pressure in pipes, channels etc.
B. Atmospheric pressure
C. Very low pressure
D. Difference of pressure between two points

Resultant pressure of the liquid in the case of an immersed body acts through____________________?

A. Centre of gravity
B. Centre of pressure
C. Metacentre
D. Centre of buoyancy