A gasoline engine operates on an Otto cycle and is running at 2000 RPM. At that speed, it has an inlet air mass flowrate of 0.085 kg/s at a pressure of 85 kPa and a temperature of 280 K. After combustion the temperature is 2000 K and the highest cycle pressure is 5 MPa. Find the compression ratio, the cycle efficiency, and the heat added during combustion.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.