The output of an under-damped second-order system with ζ = 0.1 subjected to step-input forcing initially oscillates with a period equal to 1 s until the oscillation dissipates. the same system then is subjected to sinusoidal-input forcing with a frequency equal to 12.62 rad/s. determine the phase lag (in degree) at this frequency.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.