Q4/ A baseband communication signal has an energy value equal to 2 watt and zero phase response. Then :answer the following 1-The energy spectral density G(f) of this signal should be equal to:
2-The spectrum of this signal X(f) should be equal to:
3-The signal in time domain x(t) :should be equal to:

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.