Structural and dynamic analysis

A model of a hydraulic turbine is tested at a head of 1/4th of that under which the full scale turbine works. The diameter of the model is half of that of the full scale turbine. If N is the RPM of the full scale turbine, then the RPM of the model will be

• N/2

• N

• N/4

• 2N

The square root of the ratio of the inertia force of the folowing fluid to the surface tension force is called

• Weber number

• Reynolds number

• Euler number

• Mach number

For a homologous model of a pump built to a scale ratio of 1 : 2, fluid and speed being the same in model and prototype, the ratio of model power to prototype power is

• 1/32

• 1/8

• 1/4

• 1/2.82

Which of the following similarity parameters are used where the phenomenon of cavitation is likely to occur?

• Euler’s Law

• Mach Law

• Weber’s Law

• Froude’s Law

Which of the following methods of structural analysis is a force method?

• moment distribution method

• column analogy method

• slope deflection method

• three moment equation

Ui is not developed when?

• Structure elongates

• Structure deforms

• Structure bends

• External force is zero

If a structure has 2j – r no. of members, then it will be:-

• unstable

• depends upon structure

• depends upon magnitude of load

• stable

What will be the static lateral force at 10th level of a structure if total gravity load is x and portion assigned to the 10th level is 10%?

• 0.1x

• x

• 0.001x

• 0.01x

When a structural member of the uniform section is subjected to a moment at one end only, then the moment required so as to rotate that end to produce a unit slope, is called ___

• Capacity of member

• Potential of member

• Stiffness of member

• Resistance of member

Which of the following is carried by truss members?

• flexural load

• axial load

• bending load

• shear load