Problem 1. Design a sequential circuit that has one input X and one output Y. When X=1, the circuit repeatedly goes through sequences: 00, 01, 10, 11 and back to 00 …… When X=0, the circuit stays in whatever states it currently is. Y is set to one only when transitioning from 10 state to 11 otherwise it is set to zero. (a) Design this circuit using D-type Flip-Flops (b) Repeat your design and this time use J-K-Flip Flops

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

Fluids at rest possess no flow energy. a)- true b)- false

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.