1. Consider an electrical circuit with the transfer function below: G(s) = 10 s + 1 Obtain the steady-state output of the closed loop unity-feedback system when it is subjected to each of the following inputs: a) r(t) = sin(t + 30) b) r(t) = 2 cos (2t − 45) c) r(t) = sin(t + 30) − 2 cos (2t − 45) , (Hint: you can use superposition)

Acompressor compresses a gas, a pump compresses a liquid. for a given pressure ratio, why does it take more work to compress a gas in a compressor than a liquid in a pump? a)- for a given pressure ratio the average specific volume for a gas is much higher than the average specific volume for a liquid. b)- there is no difference. the only difference is the amount of heat generated (not work) c)- for a given pressure ratio the average volurge for a gas is much higher than the average volume for a liquid. d)-there is no difference