PPSC Sub Engineer Civil Past Papers

Center of pressure on an inclined plane is :

A. at the centroid
B. above the centroid
C. below the centroid
D. at metacenter

Ratio of inertia force to elastic force is known as :

A. Mach number
B. Froude number
C. Reynold’s number
D. Weber’s number

When a body floating in a liquid, is displaced slightly, it oscillates about :

A. e.g. of body
B. center of pressure
C. center of buoyancy
D. metacentre

Ratio of inertia force to surface Jension is known as :

A. Mach number
B. Froude number
C. Reynold’s number
D. Weber’s number

The horizontal component of buoyant force is :

A. negligible
B. same as buoyant force
C. zero
D. non of these

Center of buoyancy is the :

A. centroid of the displaced volume of fluid
B. center of pressure of displaced volume
C. e.g. of floating ‘body
D. does not exist

Centre of pressure compared to e.g. is :

A. above it
B. below it
C. at same point
D. above or below

Metacentric height is the distance between the metacentre and :

A. water surface
B. center of pressure
C. center of gravity
D. center of buoyancy

The resultant of all normal pressures acts :

A. at e.g. of body
B. at center of pressure
C. vertically upwards
D. at metacentre

Working principle of dead weight pressure gauge tester is based on :

A. Pascal’s law
B. Dalton’s law of partial pressure
C. Newton’s law of viscosity .
D. Avogadro’s hypothesis

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