Afour cylinder four stroke petrol engine wastested and
following results were obtained.
petrol consumption: 5 kg/hour, speed: 750rpm, a/f
ratio: 11, temp. at the end of compression: 375oc,
pressure atthe end of compression stroke : 12 bar, relative
efficiency: 50%,diameter of cylinder: 85mm, stroke of piston:
120mm, calorificvalue of fuel: 42,000 kj/kg. find the indicated thermalefficiency and sfc based on
indicatedpower.

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

You are making beer. the first step is filling the glass carboy with the liquid wort. the internal diameter of the carboy is 15 in., and you wish to fill it up to a depth of 2 ft. if your wort is drawn from the kettle using a siphon process that flows at 3 gpm, how long will it take to fill?

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]