The following data refer to a rocket engine,Velocity of jet = 1600 m/sSpeed ratio = 0.7%3DFuel flow rate = 1kg/s Oxidizer flow rate = 4kg/sHeat of reaction per kg of exhaust gases =%3D2500kJ/kg.impulse, propulsive efficiency, propulsiveDetermine, the thrust produced, specificpower, thermal efficiency and overallefficiency of rocket enqine,

engine, elocity of jet = 1600 m/s %3D peed ratio = 0.7 uel flow rate = 1kg/s Oxidizer flow rate = 4 %3D eat of reaction per kg of exhaust gases = 500 %3D J/kg. npulse, propulsive efficiency, propulsive etermine, the thrust produced, specific ower, thermal efficiency and overall fficiency of rocket engin

engine, elocity of jet = 1600 m/s %3D peed ratio = 0.7 uel flow rate = 1kg/s Oxidizer flow rate = 4 %3D eat of reaction per kg of exhaust gases = 500 %3D J/kg. npulse, propulsive efficiency, propulsive etermine, the thrust produced, specific ower, thermal efficiency and overall fficiency of rocket engin

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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(5) A pickup truck has a five liter, V6, SI engine operating at 2400 r.p.m. the compression ratio rc = 10.2:1, the volumetric efficiency y = 0.91, and the bore and stroke related as stroke S = 0.92 B. calculate :- (a) stroke length. (cm) (b) Average piston speed. m sec (c) Clearance volume of one cylinder. kg (d) Air flow rate into engine. sec (cm³)
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B) The air flow to a four cylinder four-stroke engine is 2.15 m³/min. During a test on the engine the following data were recorded: Bore 10.5cm; stroke 12.5cm; engine speed 1200 rpm, torque 150 N.m, fuel consumption 5.5 kg/hr, calorific value of fuel, 43124 kJ/kg, ambient temperature 1-The brake thermal efficiency. and pressure are 20°C and 1.03 barş. Calculate: 2-The brakes mean effective pressure. 3-The volumetric efficiency.
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/ The following particulars refer to a two-row velocity-compounded impulse wheel which forms the first stage of a combination turbine: Steam velocity at nozzle outlet 1630 mis Mean blade velocity 1125 mls Nozzle angle :16° Outlet angle, first row of moving blades 18 Outlet angle, fixed guide blades inr Outlet angle, second row of moving blades :36° Steam flow rate 126kgs “The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade. Determine @) The velocity of whirl.
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Where necessary, assume air as an ideal gas and consider R = 287J/(kg.K), Cp = 1005 J/(kg.K), Cv = 718 J/(kg.K). a) A nozzle is a device that is used to increase the velocity of a fluidby varying the cross-sectional area. At the last section of a jetengine, air with a mass flow rate of 50 kg/s ata pressure of 500 kPa and a temperature of 600 K enters a nozzlewith an inlet cross-sectional area of 5m2. The exit area of thenozzle is 20% of its inlet area. The air leaves the nozzle at avelocity of 300 m/s. The nozzle is not well-insulated and duringthis process, 5 kJ/kg heat is lost. (i) In analysing this nozzle using the 1st law of thermodynamics,the change in which type of energy is negligible? (ii) Determine the density and velocity of the air entering thenozzle.(iii) Calculate the density of the air as it leaves the nozzle.(iv) Determine the temperature of the air as it leaves the nozzle.(v) Calculate the pressure of the air as it leaves the nozzle.
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For the model pump below (impeller size: 37.1 cm; shaft speed: 2133.5 rpm), if it is operated to achieve a pump efficiency of 60% at a discharge within the range between 0 and 0.25 m³/s, using a shaft speed of 1800 rpm instead, what will most approximately be the power coefficient? Assume water density 1000 kg/m³. 250 Head, m; power, kW 200 150 100 000 0 50 O 0.69 O 0.73 O 0.88 O 0.52 Efficiency 0.05 Head (AH), m N=2133.5 rpm = 35.6 rps D = 37.1 cm 0.15 Discharge, m³/s 0.10 Power input, kW 0.20 0.25 100 80 60 40 20 0
ul MIN LTE 1/1 11:51 PM 49% A Circular jet delivers water at a rate of 6oc/s with a velocity of 24mls, the jet impinges tangentially an the Vane moeng in the direction ef the jet with a velocity f 12m/s, the ane is so shaves that, if Aationary, it would deflect the jet through an angle of 45°c; fnd; U. Through hat angle with it defled the jet O. fnd the work done Per Seconds
‘The following particulars refer to a two-row velocity-compounded impulse wheel which forms the frst stage of a combination turbine: Steam velocity at nozzle outlet :630 mis Mean blade velocity 125 mls Nozzle angle :16° Outlet angle, first row of moving blades 18 Outlet angle, fixed guide blades 1220 Outlet angle, second row of moving blades :36° Steam flow rate 26kgs ‘The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade. Determine ) The velocity of whirl.
‘The following particulars refer to a two-row velocity-compounded impulse wheel which forms the frst stage of a combination turbine: Steam velocity at nozzle outlet :630 mis Mean blade velocity 125 mls Nozzle angle :16° Outlet angle, first row of moving blades 18 Outlet angle, fixed guide blades 1220 Outlet angle, second row of moving blades :36° Steam flow rate 26kgs ‘The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade. Determine ) The velocity of whirl. (b) The tangential thrust on the blades.