Draw the general layout of Hydraulic system. Explain the function of any two components.
[3 marks]Write application of Hydraulic system & Pneumatic System.
[4 marks]Classify the pumps used for the hydraulic system and explain external and internal gear pump with neat sketches.
[7 marks]What are the factors to be considered for selection of hydraulic fluid?
[3 marks]Write a note on Biodegradable hydraulic fluids.
[4 marks]With the help of sketch explain different locations of filters in hydraulic system.
[7 marks]Write a short note on the Quick Exhaust valve.
[7 marks]Define following terms referred in filtration: (1) Mesh number (2) Silt index (3) Beta ratio.
[3 marks]Discuss control techniques used in Direction Control Valve.
[4 marks]What is the function of Pressure Reducing Valve? sketch & explain with neat sketch the working of pressure reducing valve
[7 marks]Explain non-return valve with suitable sketch.
[3 marks]Sketch & explain shuttle valve construction & it’s working.
[4 marks]Explain hydrostatic transmission system with neat sketch and list its merits and demerits.
[7 marks]What is the influence of following properties of hydraulic fluid on hydraulic systems?
[3 marks]Bulk modulus (ii) Pour point (iii) Demulsibility
[ marks]What are the causes and effects of heat generation in hydraulic system?
[4 marks]What is FRL unit? Explain any two component of FRL unit with schematic diagram.
[7 marks]Why purification of compressed air is necessary?
[3 marks]State different types of Accumulator. Explain one in detail.
[4 marks]Explain the significance of heating and cooling devices in oil hydraulic power transmission systems.
[7 marks]Draw the standard symbols of adjustable pressure relief valve, adjustable pressure reducing valve and pressure compensated flow control valve.
[3 marks]Draw and explain sequencing circuit to operate two double acting cylinder using limit switch.1
[4 marks]Explain the significance of different components present in a Time delay valve. Explain one practical application of the time delay valve.
[7 marks]Discuss the role of automation in pneumatic and hydraulic control system.
[3 marks]State reservoir accessories and their functions.
[4 marks]Enlist different types of hydraulic cylinders. What is cushioning assembly, explain using schematic diagram.
[7 marks]