Final answer:
A close on rise pressure switch with a cut-in pressure of 50 psig and a differential pressure of 15 psi will cut out at 65 psig.
Step-by-step explanation:
A close on rise pressure switch is a type of pressure switch that operates when the pressure rises above a certain level and closes to activate a circuit or device. In this case, the cut-in pressure is 50 psig, which is the point at which the switch closes. The differential pressure is the difference between the cut-in pressure and the cut-out pressure. In this case, the differential is 15 psi, which means the cut-out pressure would be 50 psig + 15 psi = 65 psig.