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(a) Describe heat engine. How is this engine characterized?
(b) Describe Perpetual motion machines of first kind and second kind, i.e. PMM1 and PMM2. Are such machines possible to build? If no then why?
(c) A reversible engine receives heat from a high temperature reservoir at T1K and rejects heat to a low temperature sink at 560 oC. A second reversible engine receives heat rejected by the first engine at 560 oC and rejects heat to cold reservoir at 4.4 oC. Determine the temperature T1 for the engines , if they deliver same work.
what is swelling and shrinking
USAGE OF SPECIAL TOOL: The common tools used in repair and maintenance of motorcycles were introduced to you in previous sections. Now, we shall learn about some special tools and
WHICH IS THE BEST ONLINE MONITORING SYSTEM FOR GAS METAL ARC WELDING
MECHANISM OF LASER WELDING Laser welding of metals is performed with beams focused to irradiate levels in the range of 106 to 107 W / cm 2 . At such power densities, melti
Gun fires - projectile motion: A gun fires a projectile along with a muzzle velocity of 300 m/sec as illustrated in Figure. Find its angle of inclination so that it strikes a
Under the action of constant force, a 2kg block moves such that its position x as a function of time is given by X=t^3/3 ,where x in meters and t in sec , the workdone by force in
diference between thermal and thermodynamic equallibrim
A body is subjected to two harmonic motions as given below : X 1 = 15 sin (wt + 30 0 ) and X 2 = 8 cos (wt + 60 0 ). What harmonic motion should be given to the body to bring
what are the factors that affecting the fatigue behaviour of materials?
At a point in a beam, the bending stress is 50 MPa shear stress and tensile is 20 MPa. Calculate :- (i) The principal stress and maximum shear stress. (ii) The tensile stress
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