Calendar: 1871-1872 Page 539

applied sciences 539 10 How may it be shown by experiment that different metals have different conducting powers How would you estimate the conducting power of substance 11 Define specific heat If 15 oz of sand at 65 specific heat 215 and 12 oz of iron at temperature 40 specific heat 11 be thrown into oz of water at 15 find the temperature of the mixture 12 How are the radiation reflection and absorption of heat related to one another Describe the apparatus employed by Melloni to prove the laws of radiation and reflection of heat arts of Comitruction SECOND YEAR Ν Έ -All Drawings to be neat hand-sketches to scale How is good mortar made How is hydraulic concrete made How does timber decay and how is it usually preserved What is foundry pig-iron What is rolled iron What is in the formula -γ- Given beam of Memel fir 10 10 inches and 10 feet in span lying level and loaded with 40 tons distributed what would be the effect Sketch and explain the section of cast-iron girder Design box girder 20 feet long to carry 30 tons distributed 10 Design timber roof of 35 feet span truss purlins and common rafters 11 Make skeleton sketch for light roof-truss of iron 60 feet in span to carry purlins not more than feet apart 12 Design segmental arch bridge of stone 30 feet in span 20 feet wide and 20 feet high above water level showing longitudinal section plan and sketch for centre