If the temperature of the intake air in an internal combustion (IC) engine increases,then its efficiency willGroup of answer choicesDecreaseRemain sameIncreaseNone of these

Three Carnot engines operate between temperature reservoirs as follows: Engine A: Th = 1,100 K, Tc = 800 K; Engine B: Th = 1,100 K, Tc = 700 K; Engine C: Th = 550 K, Tc = 400 K. Which two engines have the same thermal efficiency?​Select one:a.No two have the same thermal efficiency.b.B and Cc.A and Cd.A and Be.​A and B and C

Inter-cooling in gas turbine results inGroup of answer choicesIncrease in thermal efficiency but decrease in net outputIncrease in both thermal efficiency and net outputIncrease in net output but decrease in thermal efficiencyDecrease in both thermal efficiency and net output

A heat engine with an efficiency of 25% takes 1400 J of heat from the high temperature heat source and does J of work in each cycle.

Air enters a jet engine through section 1 with an area of A1=0.5 m2 at a (relative) speedof 250 m/s. The pressure at the entrance is atmospheric pressure (approximately 105 Pa)and the temperature is 300 K. Inside the engine, the injected fuel mixes perfectly withair, with fuel to air mass ratio of 1:30. The enthalpy and the kinetic energy flow rate ofthe fuel can be neglected at the fuel inlet. The combustion releases a heat per unit mass(of air) of 200 kJ/kg, after which the mixture is expanded through a nozzle to the exitsection 2 whose area is A2= 0.4 m2. The product of combustion can be taken to havethe same properties of air (such as Cp=1.005 kJ/kg k, γ=1.4 and so on). The nozzleperfectly expands the flow such that at the exit 2, the pressure is atmospheric pressure.The temperature of the flow at the exit is 400 K. The figure below shows a roughschematic of the engine and the flow. Find the thrust generated by the engine.

Air in an ideal Diesel cycle is compressed from 4 L to 0.25 L, and then it expands during the constant pressure heat addition process to 0.50 L. Under cold air standard conditions, the thermal efficiency of this cycle isQuestion 10Select one:a.49.0%b.38.6%c.61.4%d.67.0%e.79.5%