For a transistor phase shift oscillator the shift in each R-C section is 60°. Design the oscillator if the frequency of the oscillation is 1 kHz and determine the current gain of the transistor for the loop gain is equal to 1.

Areheat rankine cycle operates with water as the working fluid. steam enters the first turbine at 8 mpa and 450°c and exits at 0.8 mpa. it is then reheated to 400°c before entering the second turbine, where it exits at 10 kpa. if the amount of work into the pump is 8.04 kj/kg and the net work per cycle produced is 1410.25 kj/kg, determine the thermal efficiency of the cycle.