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1 A hydraulic pump generates 240W and supplies hydraulic fluid at a rate of 5.1l/min to a linear actuator which has a bore size of 50 mm and a double piston rod diameter of 20mm. If the efficiency of the system is 85%, determine:
(a) The pressure exerted on the piston
(b) The force on the piston
(c) The velocity pf the piston
2 A hydraulic linear actuator with a bore size of 110mm and a piston rod diameter of 30mm is to transmit a force of 8.8kN and move with a velocity of 12m/min.
Determine:
(a) The power in kW
(b) The fluid pressure
(c) The fluid flowrate
3 (i) in a hydraulic system, fluid is pumped at a rate of 36l/min. The diameter of the main supply is 32mm and at the user point, it is 16mm diameter. Determine the velocity through the pipes.
(ii) If the system in (i) drives a 40mm diameter hydraulic actuator, calculate the speed of the actuator in mm/min.
Solve the support reactions at A and D by using the force method. A is a fixed support; B and C are rigid joints; and D is a pin support. EI is constant for all members.
A system consisting of 2kg of R-134a undergoes a cycle composed of the following processes: Process 1-2: constant volume from P1= 10 bar, x1=0.6 to saturated vapor. process 2-3 con
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Q. What is Pressure Testing? Pressure test shall be performed after completion of all welds and the PWHT of the boiler. Prior to final inspection and pressure test, the insi
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Question: A series resistive inductive load is energised from a 240V (RMS), 50Hz single phase AC supply, such that the load draws 1200W at a power factor of 0.8. a) Calculat
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