1. The challenge of understanding the operation of a pneumatic system can be reduced if it is

A pump capable of maintaining 20 [MPa] of pressure is supplying oil of viscosity 80 [cP] to a circular hydrostatic thrust bearing of an outside diameter of 0.1 [m] at a rate of 0.4x10* [m/s], generating a steady film thickness of 30 [um]. The bearing supports a weight of 60 [kN] and rotates at 1,000 [rpm]. Calculate a suitable recess radius and pumping power. (Ans. R, = 0.0285 [m], H= 50.89 [W])

A world-renowned monument is located in Agra, India. Built by the Mughal emperor Shah Jahan in memory of his beloved wife, Mumtaz Mahal, it is considered by it. World every year is transferred Active to Passive. One of the most remarkable aspects of the Taj Mahal is its exquisite architecture . The monument is entirely made of white marble, giving it a dazzling appearance that seems to glow in the sunlight. Flowing fountains A large dome is flanked by smaller domes and minarets on each corner. A serene and peaceful ambiance is provided by these gardens creating a perfect setting for the majestic Taj Mahal .. The skilled craftsmanship of the Mughal artisans is showcased by the intricate carvings on the marble walls and pillars . Leisurely walks are taken by visitors through the gardens, enjoying the breathtaking views of the monument from different angles . The beauty and grandeur of the Taj Mahal are added by the delicate floral motifs, geometric patterns, and calligraphy inscriptions. The Taj Mahal is not just a beautiful architectural marvel ; it is also a symbol of love and devotion. In addition to its architectural splendor, the Taj Mahal is also known for its beautiful gardens .. "

A circular hydrostatic bearing with an outside diameter of 150 [mm], recess diameter of 60 [ mm] and rotating at 500 [rpm] supports a load of 50 [kN]. The bearing is lubricated by a mineral oil of density p = 900 [kg/m] delivered to the bearing by a constant flow rate delivery pump operating at 50×10* [m°s"].The operating temperature of the bearing is 30°C. calculate the recess pressure and select an SAE oil such that the film thickness will never be less than 10 [um]. (Ans.P, = 6.173 [MPa], SAE20)

3. The final preparation of air in a pneumatic system occurs at the A. multiple-pressure circuit B. remote control planning C. workstation D. composite regulator

1In this problem, we consider two actuators connected in parallel and in series. Capside area of each actuator = Acap = 2A Rodeside area of each actuator = Arod = A%3D The viscous friction force in each actuator: Actuator 1: F, = b, v, Actuator 2: F2 = b2 V2 where v,and v, are the velocities of the respective actuators. a) The figure below shows the two actuators connected in parallel driven by variable flow pump.a Determine the relationship between pump flow Q and pump pressure p (interms of b,, b, and A) • Sketch p vs Q Assuming b, > b2 which actuator moves faster? b) Figure below shows the two actuators connected in series also driven by a variable flow pump. Find actuator speeds v, and v, as functions of pump flow Q Find relationship between p and Q and sketch p vs Q.

1. State all assumptions and determine friction loss in a concrete pipe (L = 3000 ft, D = 1 ft) that carries 12 cfs of water at 140°F. a) Use Darcy-Weisbach equation b) Use Hazen-Williams equation d) Briefly explain why selection of a design value for pipe roughness is appropriate for new pipe c) Briefly explain any difference between energy loss calculated by both methods

1. The challenge of understanding the operation of a pneumatic system can be reduced if it is considered to be groups of basic components and sub-circuits. True False

2. A storage tank discharges water @ 20°C through a galvanized iron pipe (L = 25 m, D = 150 mm).Ignore minor loss and assume pipe is horizontal. a) Calculate required depth of water above pipe outlet to deliver 0.10 m³/sec to customers b) Estimate pressure (kPa) in middle of discharge pipe.

2. The pneumatic workstation filter, regulator, and lubricator are often close fitted into a unit referred to as the A. composite group B. trio unit C. multiple pressure D. logic function

A piece of plastic floats in water with 44% of its volume below the water line. What is its density in units of kg/m³? If this is on an elevator that is accelerating up at a rate of 2.47 m/s², what percent is below the water line? (Enter no units for the second answer.)