A “pseudo-Brayton cycle” consists of two isothermal processes in place of the two adiabatic processes in a Brayton cycle. Find the efficiency of a pseudo-Brayton heat engine.

Is a Brayton cycle the same as a Carnot cycle? Name the four processes.

A Brayton cycle produces 50 MW with an inlet state of 17$^{\circ} \mathrm{C}$, 100 kPa, and the pressure ratio is 14:1. The highest cycle temperature is 1600 K. Find the thermal efficiency of the cycle and the mass flow rate of air using cold air properties.

A total charge of $7.50 \times 10^{-6} C$ is distributed on two different small metal spheres. When the spheres are 6.0 cm apart, they each feel a repulsive force of 20.0 N. How much charge is on each sphere?

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Determine the second-law efficiency of an ideal regenerator in the Brayton cycle.

Find the least common multiple of the monomials.

$$57z^4, 39z^2$$

An ideal regenerator is incorporated into the ideal air-standard Brayton cycle of earlier problem. Find the thermal efficiency of the cycle with this modification.

An ideal regenerator is incorporated into the ideal air-standard Brayton cycle of earlier problem. Calculate the cycle thermal efficiency with this modification.

The Brayton cycle in earlier problem is changed to be a jet engine cycle. Find the exit velocity using cold air properties.

Consider a solar-energy-powered ideal Rankine cycle that uses water as the working fluid. Saturated vapor leaves the solar collector at $175^{\circ} \mathrm{C}$, and the condenser pressure is 10 kPa. Determine the thermal efficiency of this cycle.

Repeat earlier problem, but include a regenerator with $75 \%$ efficiency in the cycle.

For each pair of terms, explain how the meanings of the terms differ. spiral cleavage and radial cleavage

An ideal reheat Rankine cycle with water as the working fluid operates the inlet of the high-pressure turbine at 8000kPa and 450 degree C, the inlet of the lom-pressure turbine at 500kPa and 500 degree C, and the condenser at 10kPa. Determine the mass flow rate through the boiler needed for this system to produce a net 5000kW of power and the thermal efficiency of the cycle.