B: A chain of mass 18 Kg/m and a length of 30m hangs vertically. How much
work is done upwinding the chain on the drum.
Calculate the quantity of heat required to raise the temp. of 6 Kg of steel
from 10°C to 25 °C. Take SHC of steel to be 4190 J/Kg °C.
How much mass of cobalt can be raised from 293K to 343K supplied w
60 Kilojoules of heat given SHC of cobalt is 450J/kg°C.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.