WN 20000 Q4: The power output of a six-cylinder four-stroke engine is absorbed by a hydraulic dynamometer for which the law is kW, where the brake load W = 540 newton and the speed N = 2500 rpm. The engine bore = 0.1 m; stroke=0.11 m and the fuel used = 15.6 kg/hr. The air consumption is measured by an air-box method with orifice diameter = 0.03 m; discharge coefficient = 0.6; the pressure difference across the orifice = 0.14 m of Hg. Take PHg =13600 kg/m³, ambient temperature = 27°C, ambient pressure = 1 bar. Determine volumetric efficiency (n.), engine torque (7), brake mean effective pressure (bmep), brake specific fuel consumption (bsfc). [20

WN 20000 Q4: The power output of a six-cylinder four-stroke engine is absorbed by a hydraulic dynamometer for which the law is kW, where the brake load W = 540 newton and the speed N = 2500 rpm. The engine bore = 0.1 m; stroke=0.11 m and the fuel used = 15.6 kg/hr. The air consumption is measured by an air-box method with orifice diameter = 0.03 m; discharge coefficient = 0.6; the pressure difference across the orifice = 0.14 m of Hg. Take PHg =13600 kg/m³, ambient temperature = 27°C, ambient pressure = 1 bar. Determine volumetric efficiency (n.), engine torque (7), brake mean effective pressure (bmep), brake specific fuel consumption (bsfc). [20

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

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Albert bought a portable device to pump his truck tyres. On the manual, he found outthat the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of theswept volume and the stoke/bore ratio is 1.3/1.Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K Dont calculate just indicate formula 1 which formula number will be used to evaluate the induced volume in terms of the swept volume? 2 which formula number will be used to evaluate the mass flow rate of air? 3 which formula number will be used to evaluate the power input to the compressor?
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of theswept volume and the stoke/bore ratio is 1.3/1.Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K Based on pictures below 1 which formula number will be used to evaluate the delivery temperature? 2 which formula number will be used to evaluate the isothermal efficiency? 3 which formula number will be used to evaluate the power input to the compressor? 4 which formula number will be used to evaluate the bore and stroke?
[5] A Francis turbine operates at its maximum efficiency point at h0 = 0.94, corresponding to a power specific speed of 0.9 rad. The effective head across the turbine is 160 m and the speed required for electrical generation is 750 rev/min. The runner tip speed is 0.7 times the spouting velocity, the absolute flow angle at runner entry is 70 deg from the radial direction and the absolute flow at runner exit is without swirl. Assuming there are no losses in the guide vanes and the mechanical efficiency is 100%, determine (i) the turbine power and the volume flow rate; (ii) the runner diameter; (iii) the magnitude of the tangential component of the absolute velocity at runner inlet; (iv) the axial length of the runner vanes at inlet.
A centrifugal pump draws water from a 38cm pipe from an open reservoir in which the water surface is 2.6m below the pump centerline and discharges through a 30cm pipe. At a point in the discharge 2.35m above the pump centerline a pressure gage reads 320 kPa gage. The discharge is 200Liters/sec, the head loss in the suction is 0.15m and in the discharge is 1.05m. Power input to the pump is 140hp. Determine the following: a. The total dynamic head in meters 36.923 41.527 39.188 b. The Water Power (WP) in kW 76.863 80.451 81.451 c. The pump efficiency in percent 77.659 73.596 80.876
Suppose the pump of Fig. P14–23 is operating atfree delivery conditions. The pipe, both upstream and downstreamof the pump, has an inner diameter of 2.0 cm andnearly zero roughness. The minor loss coefficient associatedwith the sharp inlet is 0.50, each valve has a minor loss coefficientof 2.4, and each of the three elbows has a minor losscoefficient of 0.90. The contraction at the exit reduces thediameter by a factor of 0.60 (60% of the pipe diameter), andthe minor loss coefficient of the contraction is 0.15. Note thatthis minor loss coefficient is based on the average exit velocity,not the average velocity through the pipe itself. The total length of pipe is 6.7 m, and the elevation difference is (z1 - z2)= 4.6 m. Estimate the volume flow rate through this pipingsystem. Complete Answer, Thank you
[1] A Pelton turbine is driven by two jets, generating 5.0 MW at 80 rev/min. The effective head at the nozzles is 300 m of water and the nozzle velocity coefficient, KN = 0.97. The axes of the jets are tangent to a circle 2 m in diameter. The relative velocity of the flow across the buckets is decreased by 17% and the water is deflected through an angle of 165 deg. Neglecting bearing and windage losses, determine: (i) the runner efficiency; (ii) the diameter of each jet; (iii) the power specific speed.
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the delivery temperature of air in the compressor in Kelvin to 1 decimal places?
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the induced volume in terms of stroke volume, provide the coefficient values of the swept volume to 4 decimal places?
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2 /min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1.Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K Based on pictures below 1 which formula number will be used to evaluate the mass flow rate of air? 2 which formula number will be used to evaluate the delivery volume?
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.Evaluate the mass flow rate of air inside the compressor in kg/min to 3 decimal places.
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1.Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1 What is the swept volume in m3 to 6 decimal places? 2 Evaluate the mass flow rate of air inside the compressor in kg/min to 3 decimal places 3 What is the induced volume in terms of stroke volume, provide the coefficient values of the swept volume to 4 decimal places?
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the isothermal power of the compressor in kW to 2 decimal places in kW?