[Encircle one correct answer] The Stirling engine can in principle reach the Carnot efficiency limit. In addition, Stirling engines are: a. quieter in operation as they operate on continuous combustion of fuel. b. potentially cleaner and quieter than many other types of engines. c. can operate on a wider range of fuels which are combusted externally of the cylinder. d. all the above.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Fluids at rest possess no flow energy. a)- true b)- false

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10