If the ratio of all the corresponding linear dimensions are equal, then the mode

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Question
If the ratio of all the corresponding linear dimensions are equal, then the model and the prototype are said to have
Options
A. geometric similarity
B. kinematic similarity
C. dynamic similarity
D. none of these

Correct Answer

geometric similarity

Hydraulic Machines problems

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4. Braking jet in an impulse turbine is used
Options
A. to break the jet of water
B. to bring the runner to rest in a short time
C. to change the direction of runner
D. none of these

5. Which of the following statement is correct?
Options
A. In an impulse turbine, the water impinges on the buckets with pressure energy.
B. In a reaction turbine, the water glides over the moving vanes with kinetic energy.
C. In an impulse turbine, the pressure of the flowing water remains unchanged and is equal to atmospheric pressure.
D. In a reaction turbine, the pressure of the flowing water increases after gliding over the vanes.

6. Head developed by a centrifugal pump is
Options
A. proportional to diameter of impeller
B. proportional to speed of impeller
C. proportional to diameter and speed of impeller
D. none of the above

8. The function of guide vanes in a reaction turbine is to
Options
A. allow the water to enter the runner without shock
B. allow the water to flow over them, without forming eddies
C. allow the required quantity of water to enter the turbine
D. all of the above

10. The undershot water wheels are those in which
Options
A. the wheel runs entirely by the weight of water
B. the wheel runs entirely by the impulse of water
C. the wheel runs partly by the weight of water and partly by the impulse of water
D. none of the above

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