⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs101
Ratio of inertia force to elastic force is known as__________________?
AMach number
BFroude number
CReynold’s number
DWeber’s number E. none of the above
102
Ratio of inertia force to surface Jension is known as ___________________?
AMach number
BFroude number
CReynold’s number
DWeber’s number E. none of the above
103
When a body floating in a liquid, is displaced slightly, it oscillates about _________________?
Ae.g. of body
Bcenter of pressure
Ccenter of buoyancy
Dmetacentre E. liquid surface
104
If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be_________________?
A2 meters of water column
B3 meters of water column
C5 meters of water column
D6 meters of water Column E. 7 meters of water column
105
A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is____________________?
A9,000 kg
B13,500 kg
C18,000 kg
D27,000 kg E. 30,000 kg
106
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is_________________?
A1
B5
C7
D6
107
The center of pressure of a surface subjected to fluid pressure is the point_______________?
Aon the surface at which resultant pres-sure acts
Bon the surface at which gravitational force acis
Cat which all hydraulic forces meet
Dsimilar to metacentre E. where pressure equivalent to hydraulic thrust will act
108
Metacentric height is the distance between the metacentre and_______________?
Awater surface
Bcenter of pressure
Ccenter of gravity
Dcenter of buoyancy E. none of the above
109
The resultant of all normal pressures acts___________________?
Aat e.g. of body
Bat center of pressure
Cvertically upwards
Dat metacentre E. vertically downwards
110
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. Sensitivity of inclined tube to sensitivity of U-tube is equal to________________?
Asin 9
Bsin 9
Ccas 9
Dcos 9 E. tan 9