An ideal incomplete-expansion cycle uses steam generated at 1.85 MPa. Release condition is dry and saturated. Exhaust steam is at 0.03 MPa and has 10.58% quality. The actual engine uses 1000 kg/h of steam. The brake engine efficiency is 60% and the mechanical efficiency is 85%. (a) for the ideal engine, calculate the thermal efficiency and mep. For the actual engine, calculate (b) the brake power in kW and the brake thermal efficiency, (c) the indicated thermal efficiency and the indicated heat rate (d) the approximate enthalpy of the exhaust steam at 0.03 MPa assuming that the heat loss from the engine is 23 kJ per kg of steam.

6. The speed of a particle moving in a circle with radius 2.0 m increases its speed constantly at a rate of 4.4 m / s2. At an instant when the magnitude of the total acceleration is 6.0 m / s2, what is the velocity of the particle?   Answers: a) 3.9 m/s       b) 2.9 m/s      c) 3.5 m/s      d)   3.0 m/s      e) 1.4 m/s