Test: Dimensional & Model Analysis - 1 - Mechanical Engineering MCQ

checking the correctness of a physical equation

determining the number of variables involved in a particular phenomenon

determining the dimensionless groups from the given variables

the exact formulation of a physical phenomenon

only the dimensional quantities may be added or substracted.

only the variables with the same dimensions may be multiplied or divided.

only the variables with the same dimensions may be added or subtracted.

dimensions of the two sides of the equation may not be same.

0.25 hp

5.00 hp

447.20 hp

8944.30 hp

the coefficient of lift, C_L

the pipe friction factor, f

the Manning’s coefficient, N

the coefficient of discharge, C_d

the forces acting at corresponding locations are same

the flow pattern is similar

there is point to point correspondence between the two systems

both the systems undergo similar rates of change of motion

performing acceptance tests

comparing two identical equipments

comparing similarty between design and actual equipment

designing and testing models so that the results can be worked out for the prototype

flow over the spillway of a dam

flow of blood in veins and arteries

water hammer created in penstocks

flow through low speed turbomachines

pressure rise due to sudden closure of valves

flow over the spillway of a dam

flow of liquid jets from orifices

motion of ship in rough and turbulent seas

flow of highly viscous fluids . .

motion of rocket

water waves breaking against a wall

motion of submarine completely in water

flow of water through a pipe line

surface wave generated in liquids

steel balls dropping through oil

formation of spherical drops-rain drops