IndiaBIX

Mechanical Engineering - Hydraulic Machines

Exercise : Hydraulic Machines - Section 3
41.
The function of guide vanes in a reaction turbine is to
allow the water to enter the runner without shock
allow the water to flow over them, without forming eddies
allow the required quantity of water to enter the turbine
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Which of the following statement is correct ?
In an impulse turbine, the water impinges on the buckets with pressure energy.
In a reaction turbine, the water glides over the moving vanes with kinetic energy.
In an impulse turbine, the pressure of the flowing water remains unchanged and is equal to atmospheric pressure.
In a reaction turbine, the pressure of the flowing water increases after gliding over the vanes.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
If the ratio of corresponding velocities at corresponding points are equal, then the model and the prototype are said to have dynamic similarity.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The jet ratio is defined as the ratio of the
diameter of jet to the diameter of Pelton wheel
velocity of jet to the velocity of Pelton wheel
diameter of Pelton wheel to the diameter of jet
velocity of Pelton wheel to the velocity of jet
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Mechanical efficiency of a centrifugal pump is the ratio of
energy available at the impeller to the energy supplied to the pump by the prime mover
actual workdone by the pump to the energy supplied to the pump by the prime mover
energy supplied to the pump to the energy available at the impeller
manometric head to the energy supplied by the impeller per kN of water
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers