48) If the strain energy absorbed in a cantilever beam in bending under its own weight is 'K' times greater than the strain energy absorbed in an identical simply supported beam in bending under its own weight, then the magnitude of 'K' is

49) In a 5 KW cooling capacity refrigeration system operating on a simple vapour compression cycle, the refrigerant enters the evaporator with an enthalpy of 75 KJ/kg and leaves with an enthalpy of 182 KJ/kg. The enthalpy of the refrigerant after compression i

50) A centrifugal pump running at 500 rpm and at its maximum efficiency is delivering a head of 30 m at a flow rate of 60 litres/min. If the rpm is changed to 1000, then the head H in meters and flow rate Q in liters/min at maximum efficiency are estimated to

51) For IT01 grade, tolerance is expressed as

52) The index of performance for a machining operation is a function of MRR - Material Removal Rate, TWR - Tool Wear Rate