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(a) Show that all reversible engines operating between the same source and sink will have same efficiency.
(b) A reversible heat engine operates between two reservoirs at temperature of 600oC and 40oC. The engine drives a reversible refrigerator which operates between reservoirs at temperature of 40 oC and -20 oC. The heat transfer to the heat engine is 2000kJ and total work output of the combined engine refrigerator plant is 360KJ.
(i ) Determine the heat transfer to the refrigerant and net heat transfer to the reservoir at 40 oC.
(ii) Reconsider (i) given that the efficiency of the heat engine and the COP of the refrigerator are each 40% of their maximum possible values.
Flux Cored Arc Welding Single Pass F illet Welds upto (8.0 mm) maximum and groove welds made with a single pass or a single pass each side, may be made using an E70T-X electrod
Construction of Railway Line: Earthwork Earthwork in embankment is made up of soil from nearby borrowpits. The soil is deposited in layers of 25 cm and compacted at o
how to produce a design that meets the specification given: Beam Dimensions W, H and T, where H=2W and T=W/20 • Bolt Size D1 • Side Plate thickness T2 and width W2 • Cradle Plat
a) A pair of 20 degree full depth involute spur gears having 30 and 50 teeth respectively of module 4mm are in mesh. The smaller gear rotates at 1000 rpm. Determine- 1) Contact
In ME1, you are beginning to develop knowledge of design, materials, and basic machine elements (e.g., power screws, bolted joints, bearings, gears). In addition, you are becoming
The Bronzes The coinage bronze employed for making coins in earlier days contains 95% copper, 4% Sn and 1 % Zn. The Zn acts as a deoxidizer. Such alloy is soft and ductile.
The following specification is used for the design of a flanged coupling between two coaxial shafts: Speed: 650rpm Power transmitted: 550 kW Bolt Diameter: 12 mm Pit
(a) A circular cylinder of mass M and radius R connected by a spring of stiffness ‘K'. It is free to roll on horizontal surface without slipping. Calculate the natural frequency.
Forces in the members of the truss: Find out the forces in the members AB , BC , AC of the truss shown in the figure drawn adjacent. Sol.: First determin
how to design spindle
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