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5
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1
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18k
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1
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A centrifugal pump having outer diameter equal to two times the inner diameter and running at 1000 rpm works against a total head of 40 m.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
2
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1
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5.4k
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1
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A single stage centrifugal pump with impeller diameter of 30 cm rotates at 2000 rpm and lifts 3 m3 of water per second to a height of 30 m width an efficiency of 75%.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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500
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1
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Explain Cavitation effect.
mechanical utility system applied hydraulics updated 2.8 years ago by pedsangini276 • 4.8k
1
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1
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22k
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1
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A single acting reciprocating pump, running at 50 rpm, delivers 0.01 m3/s of water. The diameter of the piston is 200 mm and stroke length 400 mm.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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10k
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1
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Choking and surging in case of centrifugal compressor.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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2.8k
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1
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What are the axial thrust in centrifugal pump? Discuss the methods of the balancing the axial thrust.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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2.2k
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1
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Differentiate between Centrifugal pumps and Reciprocating pumps
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
2
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1
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13k
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1
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Derive an expression for work done by the impeller of a centrifugal pump on liquid per second per unit weight of liquid.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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26k
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1
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Explain the working of Vane pump
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
2
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1
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15k
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1
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Explain screw pump with a neat diagram.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
1
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1
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2.8k
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1
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What is cavitation? How can we avoid cavitation in reciprocating pumps?
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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11k
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1
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Draw an indicator diagram considering the effect of acceleration and friction in suction and delivery pipes. Derive an expression for the work done per second in case of a single acting reciprocating
mechanical utility system updated 6.0 years ago by teamques10 ★ 67k
0
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1
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5.6k
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1
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Define coefficient of discharge, volumetric efficiency and slip in reciprocating pump. Describe negative slip with proper reason.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
1
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1
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17k
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1
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A two stage single acting reciprocating compressor takes in air at the rate of 0.2 $m^3$/s. The intake temperature and pressure of air at 0.1 MPa and $16^o$C.
mechanical utility system updated 3.8 years ago by ninadsail • 10
0
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1
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1.8k
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1
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Differentiate between reciprocating compressors and rotary compressor.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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2.5k
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1
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Why are axial flow compressors used for jet aircraft applications?
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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1.8k
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1
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Calculate the power required to run the vane compressor and its efficiency, when it handles 6 m3 of air per minute from 1 bar to 2.2 bar.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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1.2k
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1
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Write short note on Model testing in centrifugal pumps.
mechanical utility system updated 2.7 years ago by pedsangini276 • 4.8k
0
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1
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2.8k
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1
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A rotary air compressor working between 1 bar and 2.5 bar has internal and external diameters of impeller as 300mm and 600mm respectively.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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10k
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1
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A centrifugal compressor running at 12000 rpm delivers 600$m^3$/min of free air. The air is compressed from 1 bar and $27^o$C to a pressure ratio of 4 with an isentropic efficiency of 85%.
mechanical utility system updated 3.8 years ago by ninadsail • 10
0
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1
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2.4k
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1
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Write a short note on Diffuser System.
mechanical utility system updated 3.8 years ago by ninadsail • 10
0
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1
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989
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1
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Why is capacity control of compressors essential? State the methods of capacity control.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
0
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1
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2.7k
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1
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A single acting, single cylinder reciprocating air compressor is compressing 20kg/min of air from 110kPa,30deg to 600kPa and delivers it to a receiver.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
3
votes
1
answer
19k
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1
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Derive an expression for volumetric efficiency of a single stage single acting reciprocating air compressor with clearance and discuss at least four factors that affect volumetric efficiency.
mechanical utility system updated 3.8 years ago by teamques10 ★ 67k
3
votes
1
answer
41k
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1
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Explain construction and working of multi-stage, reciprocating air compressor with intercooler with help of neat labelled schematic diagram and P-V diagram.
mechanical utility system updated 3.8 years ago by ninadsail • 10
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