A rod is 2m long is initially at a temperature of 10 degrees c. Find the expansion of the rod when the temperature is raised to 100 degrees c. If this expansion is prevented, find the stress induced in the material of the rod. Take E= 105kN\mm2 and co efficient of thermal expansion a= 1.2×10 raised to negative 5 per centigrade

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain