1. For a hydraulic motor, its displacement Vp-250ml/r, the inlet and outlet pressure are 9.8MPa and 0.49MPa respectively, total efficiency is n=0.9, volumetric efficiency is nv=0.92, when the actual flow rate is 0.3×10³m³/s, calculate: output torque of hydraulic motor and the actual speed of hydraulic motor..

1. For a hydraulic motor, its displacement Vp-250ml/r, the inlet and outlet pressure are 9.8MPa and 0.49MPa respectively, total efficiency is n=0.9, volumetric efficiency is nv=0.92, when the actual flow rate is 0.3×10³m³/s, calculate: output torque of hydraulic motor and the actual speed of hydraulic motor..

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A hydraulic vane pump running at 1800 rpm develops 2 L/s flow at 750 kPa. Volumetric efficiency is .85 and overall efficiency is 0.8. Determine the Theoretical Torque required, TT (N-m). (Hint: first calculate the mechanical efficiency and theoretical flow rate. Convert rpm to rad/s). O 9.41 N-m 8.85 N-m 9.35 N-m 9.62 N-m 8.80 N-m
Seven hundred gallons per minute of water are being discharged by a centrifugal pump 5 ft above the pump inlet. The inlet pressure is 4-in Hg above the atmospheric and the discharge pressure is 29 psia. If the pump has an 8-in diameter inlet and a 4-in diameter discharge, find the new flowrate if thr pump speed is doubled. Assume the pump input is 8Hp. A. 700 gpmB. 1050 gpmC. 1400 gpmD. 1750 gpm
A Pelton wheel develops 70 kW under a head of 60 m of water. It rotates 400 rpm. Overall efficiency is 80%. Find the discharge rate in m³/s. Use the equation below, where P is power of the turbine shaft and no is the overall efficiency, where specific weight of water is is 9.80 kN/m³ no P YQH A generator is driven by a small, single-jet Pelton turbine designed to have a power specific speed sp 0.20. The effective head at nozzle inlet is 200 m and the nozzle velocity coefficient is 0.985. The runner rotates at 880 rev/min, The turbine overall efficiency is 80%. Find (a) the power delivered by the shaft of the turbine and (b) find the power delivered by the water to the turbine. where density of water is 1000 kg/m³ and g is 9.80 m/s². Use Stup Ω P/p (gHE)* Overall efficiency ne and Power developed at turbine shaft hydraulic power P YQH
1- A double jet of Pelton turbine driven by double nozzles to produce (4250 kw) to the shaft of an electrical generator when running at (400 rpm). The height of (180 m). wheel diameter is (1450 mm). The velocity of relative= 0.9 of jet velocity. If the angle of bucket is (165'), determine: a) Hydraulic efficiency b) Diameter of the jet
EX.1 An axial flow pump with an impeller rotor diameter of 30 cm handles water at a rate of 2.7 m?/minute running at 1500 rpm. The energy input is e ——T e T ‘a 125 J/kg and Total to Total efficiency is 0.75. If a geometrically similar pump has a diameter of 20 cm running at 3000 rpm, find its: i) Flow ratei) input power.
A hydraulic vane pump running at 1800 rpm develops 2 L/s flow at 750 kPa. Volumetric efficiency is .85 and overall efficiency is 0.8. Determine the Actual Torque Required, TÀ (N- m). (Hint: first calculate the mechanical efficiency and theoretical flow rate. Convert rpm to rad/s). O 10.6 N-m O 9.94 N-m O 8.01 N-m O 9.35 N-m O 8.85 N-m
The suction diameter of 60mm reads 2psi vaccum and 50mm diameter discharge with 250kpag. The suction water level is 5m above water pump center line and discharge water level is 25m above the pump center line. The total head loss at suction and discharge is 2m. If discharge is 0.01m3/s, find the horsepower needed to pump the water for 80% pump efficiency. ANSWER: 8.15 hp
A pelton wheel having semi-circular buckets is 1min diameter. Pressure head at the nozzle when it is closed is 15 bars. The discharge when the nozzle open is 3.5 m/min. If the speed is 600 rpm, find power developed by wheel and its hydraulic efficiency. Assume overall efficiency as 85% and Cy 0.98. B A V,= Vw1 %3D Inlet V. w2 V2 G Outlet
A Kaplan turbine of 100 B.H.P. is working under a headof 5 in and running at 210 R.P.M.The discharge through the tur.bine is 1*80 m°/sec.If now the turbine is allowed to work under a head of 15 m,what would be its new speed, discharge and power ?
3.4 Find the flow rate of water through the system shown for the turbine to produce 20 kW. Neglect friction in your calculations Problem Set 3 1. Q=10.75m3/s 2. P=204kw/273hp/ -40m 2- 350 Pa ge 30m *- 30 n- 70 Pa ga =1.0 75cmØ Pump D= 0.5 m head lom in pipe 3m Water Q-0.5 m
Q.8 A turbine is working under a head of 200 m. The power developed by the turbine is 100 kW and discharge through the turbine is 0.125 m/s. In such a case, the ratio of unit power to unit discharge for the turbine will be A 2000 в 4000 C 6000 D 8000
PROBLEM 6 An axial flow pump is required to deliver 1m3/s at 7m head while running at 960 rpm. Its outer diameter is 50 and hub diameter is 25 cm. Find the following (1) flow velocity, which is assumed to be constant from hub to tip, and A 4.59 m/s B 6.791 m/s C-60.7 m/s D.39.3 m/s (2) power required to drive the pump if overall efficiency is 84%, A 81.75 KW B. 12.03 KW C:40.7 KW D.60 9 KW