Fluid Systems

	Question
0	Sketch and describe a 'Bleed-off circuit and explain where it is used and its main advantage over other circuits. This question has 0 answers so far.
0	Compare briefly the pneumatic system with hydraulic system. This question has 0 answers so far.
0	What is governing of hydraulic turbines and why is necessary? This question has 0 answers so far.
0	What are the functions of casing in a centrifugal pump? Sketch different types of casings. This question has 0 answers so far.
0	What is priming and why it is necessary? This question has 0 answers so far.
0	What are the functions of draft tube? Sketch different types of draft tubes. This question has 0 answers so far.
0	Sketch and discuss the main characteristics curves for a Francis turbine. This question has 0 answers so far.
0	What is cavitation and where it is likely to occur in turbines and pumps? Also, define Thoma cavitation factor. This question has 0 answers so far.
0	Explain with a neat sketch the principle of working of a fluid coupling.How it is different from torque converter? This question has 0 answers so far.
0	A small boat is fitted with jets of total area 0.65m2. The velocity of jet relative to the boat is 9m/s and speed of the boat is 18km per hour. The efficiency of engine and pump are 85% and 65% respectively. If the water is drawn amid ship, determine the propelling force and overall efficiency. It may be assumed that pipe losses amount to 10% of the kinetic energy of the jets. This question has 0 answers so far.
0	Differentiate between pilot operated and solenoid operated valves.Sketch a flow control valve and a pressure relief valve explain briefly. This question has 0 answers so far.
0	Explain the terms constant delivery and variable deliverypumps. Describe with a neat sketch a vane pump, explaining how discharge is varied keeping the speed constant. This question has 0 answers so far.
0	Explain the terms positive displacement and non-positive displacement pumps. This question has 0 answers so far.
0	What do you understand by hydraulic similarity as applied to hydraulic turbines? Define the terms unit speed, unit power and unit discharge and derive expressions for these quantities. This question has 0 answers so far.
0	A model of a Francis turbine one-fifth of full size, develops 3kw at 306rpm under a head of 1.77m. Find the speed of and power of full size turbine operating under a head of 5.7m if the efficiency of the model and full size turbine are the same as 76%. What will be the efficiency of the full size turbine if the scale effect is considered? This question has 0 answers so far.
0	Differentiate between Propeller turbine and kaplan turbine. This question has 0 answers so far.
0	Differentiate between Radial flow and mixed flow in turbines. This question has 0 answers so far.
0	Differentiate between Impulse turbine and reaction turbine. This question has 0 answers so far.