An air standard otto cycle has a compression ratio of 6 and the temperature and pressure at the beginning of the compression process is 520 r and 14.2 psia. the heat addition per unit mass is 600 btu/lbm. determine
(a) the maximum temperature, in r,
(b) the maximum pressure, psia,
(c) the thermal efficiency
(d) the mean effective pressure, mep, in psia.

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.

Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.

Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.