1. The reactances Xd and Xq of a salient-pole synchronous generator are 1.00 and 0.6 p. u., respectively. The armature resistance may be considered to be negligible. Compute the generated voltage when the generator is loaded to (a) 0.73 p. u. kVA, unity power factor at terminal voltage of 0.98 p. u. and (b) 0.99 p. u. kVA, 0.94 leading power factor and rated voltage.

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature