⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs111
For measuring flow by a venturimeter, if should be installed in __________________?
Avertical line
Bhorizontal line
Cinclined line with flow downward
Dinclined line with upward flow E. in any direction and in any location
112
The normal stress is same in all directions at a point in a fluid_______________?
Aonly when the fluid is frictionless
Bonly when the fluid is incompressible and has zero viscosity
Cwhen there is no motion of one fluid layer relative to an adjacent layer
Dirrespective of the motion of one fluid layer relative to an adjacent layer E. in case of an ideal fluid
113
The time oscillation of a floating body with increase in metacentric height will be_________________?
Asame
Bhigher
Clower
Dlower/higher depending on weight of body E. unpredictable
114
Differential monometer is used to measure___________________?
Apressure in pipes, channels etc.
Batmospheric pressure
Cvery low pressure
Ddifference of pressure between two points E. velocity in pipes
115
Resultant pressure of the liquid in the case of an immersed body acts through____________________?
Acentre of gravity
Bcentre of pressure
Cmetacentre
Dcentre of buoyancy E. in between e.g. and centre of pressure
116
An open vessel of water is accelerated up an inclined plane. The free water surface will__________________?
Abe horizontal
Bmake an angle in direction of inclination of inclined plane
Cmake an angle in opposite direction to inclination of inclined plane
Dany one of above is possible E. none of the above
117
For a floating body to be in equilibrium_____________________?
Ameta centre should be above e.g.
Bcentre of buoyancy and e.g. must lie on same vertical plane
Ca righting couple should be formed
Dall of the above E. none of the above
118
The units of dynamic or absolute viscosity are__________________?
Ametres2 per sec
Bkg sec/meter
Cnewton-sec per meter
Dnewton-sec2 per meter E. none of the above
119
The property by virtue of which a liquid opposes relative motion between its different layers is called_________________?
Asurface tension
Bco-efficient of viscosity
Cviscosity
Dosmosis E. cohesion
120
To avoid an interruption in the flow of a syphon, an air vessel is provided__________________?
Aat the inlet
Bat the outlet
Cat the summit
Day nay point between inlet and outlet E. none of the above