1.an engine develops 65kW over a period of 20minutes. The engine uses 5kg of petrol.
Calculate the following:-
A. The heat gegenerated
B. The power generated by the petrol
C. The efficiency Of the engine
2.A square steel plate with sides of 12cm long, is heated and the change in area is 1.723mm^2.determine the change in temperature
3.steam is generated in a boiler at pressure of 0.1MPa. Calculate the enthalpy required for 1kg of steam when the dryness factor is 0.96
4.a hydraulic press lifts a body of 2 tons. The diameter of the ram is twice the diameter of the plunger. Determine the effort force exerted by the plunger.
5. A force of 400N is exerted on the plunger of a hydraulic press. The diameter of the plunger is 400mm and the stroke length is 120cm. Calculate the following:
A.pressure exerted by the plunger.
B.volume delivered per stroke
C.work done after 10 pumping strokes of the plunger
4 answers