Saturated liquid water flows steadily into a well-insulated electrical water heater with a mass flow rate (m˙) of 1.00 kg/s at 100 kpa and the heater turns water into saturated vapor at the exit.

assume no pressure loss, neglect changes in ke and pe, and use the pc model. the ambient atmospheric conditions are 100 kpa and 20∘c.

part a) determine the electrical power consumption.(in kw)

part b) determine the rate of entropy generation in the water heater’s universe (in kw/k)

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation