Calendar: 1899-1900 Page 802

01 FACULTY OF SCIENCE 10 Shew that the oscillating and the direct-acting engines are based on the same mechanism Construct curve to show the velocity of the cross-head at all parts of the stroke for an engine of which the following particulars are given Length of crank foot מ connecting rod feet Revolutions per mill 100 From the velocity curve thus obtained construct an ac- celeration curve Note -The crank is to be taken as revolving uniformly 11 The bars in 4-link mechanism are of the following engths ab inches be cd 1-9 da 14 לי לל לל Find the angular velocity of cd when normal to ad the angular velocity of ab being 35 units of circular measure- ment per second JBecSantcal engineering III YEAR Paper Six questions only to be attempted of which three at least must be chosen from questions 1-7 perfect engine working on the Rankine cycle requires 150 per per minute If its upper limit of temperature is 350 and its lower limit 100 how many per minute would perfect Carnot Engine require Wherein lies the difference between the two and why should the one or the other be chosen as standard of com- parison for steam engine Compare the heat losses which take place in gas engine with those in steam engine examining the different portions of the stroke of each in detail