7.A single cylinder, single acting, four stroke cycle gas engine develops 20 kW at 250 r.p.m. The workdone by the gases during the expansion stroke is 3 times the work done on the gases during thecompression stroke. The work done on the suction and exhaust strokes may be neglected. If theflywheel has a mass of 1.5 tonnes and has a radius of gyration of 0.6m, find the cyclic fluctuation ofenergy and the coefficient of fluctuation of speed.[Ans. 12.1 kN-m; 3.26%]

Answered: 7. A single cylinder, single acting,…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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7. A single cylinder, single acting, four stroke cycle gas engine develops 20 kW at 250 r.p.m. The work done by the gases during the expansion stroke is 3 times the work done on the gases during the compression stroke. The work done on the suction and exhaust strokes may be neglected. If the flywheel has a mass of 1.5 tonnes and has a radius of gyration of 0.6m, find the cyclic fluctuation of energy and the coefficient of fluctuation of speed.
An engine having five cylinders in line, as shown in Figure Q5, has successive cranks 1440 apart, the distance between cylinder centre lines being 450 mm. The reciprocating mass for each cylinder is 12 kg, the crank radius is 120 mm and the connecting rod length is 450 mm. The engine runs at 650 rev/min.
Seatwork No. 1 An SI I-2 square engine operates on a 2-stroke cycle at 2400 rpm. The average piston speed is 15 m/se and the no. of piston action is 2. When the piston is at its maximum position the remainder volume is 0.005 Liters. Determine: a. Volumetric displacement per unit time for all cylinders (m³/sec) b. Compression ratio c. Volume at Bottom Dead Center (m³)
A horizontal cross compound steam engine develops 500 kW at 100 rpm. The coefficient of fluctuation of energy as found from the turning moment diagram is to be 0.1 and the fluctuation of speed is to be kept within ± 0.5% of the mean speed. Find the mass of the flywheel required, if the radius of gyration is 3 meters.
i need the answer quickly
5. A 5.6 liter V10 compression-ignition truck engine operates on a four stroke cycle at 3600 rpm producing 162 kW of power in the shaft. The bore and stroke of the engine are related as S = 1.12 B. Calculate: (15 pts) a. Average piston speed (m/s) b. Torque (N-m) c. Brake mean effective pressure
A single cylinder, four stroke cycle, reciprocating engine develops 160 brake horsepower with a brake mean effective pressure of 120 lb/ sq.in and an engine speed of 2000 revolutions per minute. The length of the stroke and the diameter of the bore in the cylinder are equal. Find the piston diameter.
Calculate the output power of a four cylinder, two stroke engine run at 2500 rpm. The specific fuel consumption is 0.005 Kg /KW minutes. The diameter of fuel orifice Is 0.8 mm and the specific gravity is 0.875 the fuel is injected ata pressure of 14000 KPa and the pressure in the combustion chamber is 3500 Kpa over a crank travel is 20 . Cofficient of velocity is 0.87. *
Find the average piston velocity (between limiting positions) for an in-line slider-crank mechanism. The crank length is 2inch, and the crank rotates at 3000rev/min.
Q. A single stage impulse rotor has a blade ring diameter of 57.5 cm and rotates at a speed of 10,000 r.p.m. The nozzles are inclined at 20o to the direction of motion of the blades and the velocity of the issuing steam is 1,050 m/sec. Determine the inlet blade angle. Assume a friction coefficient of the blading equal to 0.85 and that the inlet and outlet angles are equal. Find also: (a) the power developed at the blades for a steam supply of 1,350 kg per hour (b) the diagram efficiency, and (c) the loss of kinetic energy due to blade friction
14. A single cylinder internal combustion engine working on the four stroke cycle develops 75 kW at 360 r.p.m. The fluctuation of energy can be assumed to be 0.9 times the energy developed per cycle. If the fluctuation of speed is not to exceed 1 per cent and the maximum centrifugal stress in the flywheel is to be 5.5 MPa, estimate the mean diameter and the cross-sectional area of the rim. The material of the rim has a density of 7.2 Mg/m³. [Ans. 1.47 m; 0.088 m²]
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