Metacentric height is the distance between the metacentre and_______________?
(A) water surface
(B) center of pressure
(C) center of gravity
(D) center of buoyancy
(D) none of the above
The resultant of all normal pressures acts___________________?
(A) at e.g. of body
(B) at center of pressure
(C) vertically upwards
(D) at metacentre
(D) vertically downwards
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
(D) flow occurs at constant fate
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
(D) velocity, depth, pressure, etc. change from point to point in the fluid flow
An ideal flow of any fluid must satisfy __________________?
(A) Pascal law
(B) Newton’s law of viscosity
(C) boundary layer theory
(D) continuity equation
(D) Bernoulli’s theorem
Flow of water in a pipe about 3 metres in diameter can be measured by__________________?
(A) orifice plate
(B) venturi
(C) rotameter
(D) pitot tube
(D) nozzle
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
(D) in any direction and in any location
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
(D) in case of an ideal fluid
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
(D) unpredictable
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
(D) velocity in pipes