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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.
Describe Nusselt Number, Reynolds Number and Prandtl Number. Get the relation between these three for a circular cylinder losing heat in forced convection to the air flowing around
Find out their common velocity: An aeroplane weighing 40 kN horizontally moves with a velocity of 20 m/sec (72 kmph, that means 72 km per hour). A helicopter of weight 20 kN i
All equipment that is critical to the plant's safety support; should always be located in a Safe Area (e.g. fire pumps, instrument/electrical equipment and an Emergency Assembly Ar
Define different regimes of boiling and depict their ranges on a excess temperature curve us heat flux. Also distinguish between laminar film condensation and dropwise condensation
A circular thin steel diaphragm having an effective diameter of 20mm is clamped around its periphery and is subjected to a uniform gas pressure of 180kN/m^2. Calculate the minim
What is pedestal? What are uses of pedestal? PEDESTALS A pedestal is used to transfer the loads from the metal columns through the floor and soil to the footing when it is a
Determine reactions on compound beams: Determine reactions at the support A , B , C , and D for arrangement of compound beams shown in the figure given below.
An open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the corresponding angles of Cap are 160 o and 210 o . The smaller pulley runs at 200 r.p.
DEFINE A SHAPE FACTOR
Disc Type Brake: As shown in Figure the disc brake consists of a pearlitic grey cast iron disc bolted to the wheel hub and a stationary housing called caliper. Casting in tw
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