39782B/s O11:50Q2Sheet No. Eight1-prove that the air standard efficiency of an engine working on the constant volumecycle is given by 1- Calculate the air standard efficiency of an engineworking on this cycle. If the pressure at the beginning and the end of compression, are103.5kPa and 827.5 kPa, respectively. Take y =1.4(44.7%)2- An internal combustion engine has a bore of 200 mm and stroke of 380 mm. Theclearance volume is 0.003 m'. Determine the air standard efficiency and indicatedthermal efficiency , taking y=1.4 and an efficiency ratio is 60%. (0.472, 0.2835)3-a- establish an expression in terms of the volume ratio of compression for the idealthermal efficiency of an engine working on the constant volume cycle.b- The diameter of the piston of a petrol engine is 100 mm and the stroke is 100m.The clearance volume is 0.105 lit. if its relative efficiency is 0.4, calculate the actualthermal efficiency.4-Show thsat for ideal constant pressure cycle, the thermal efficiency is given by(0.231). in an engine working on the ideal constant pressure cycle, the adiabatic1-Thermodynamics2nd YearUniversity of MisanDr. Ali Al-Jubainawi.College of EngineeringMechanical Engineering Dept.compression and expansion volume ratio is 4.5 and 50kJ are rejected at constantpressure per cycle. Determine the work done per cycle.5- a mass of 0.5 kg of air is taken through a constant pressure cycle. Condition at thebeginning of adiabatic compression are 96.5 kPa and 15°C. The pressure ratio ofcompression is 6. Constant pressure heat addition occurs after adiabatic compressionuntil the volume is doubled. Determine a-the thermal efficiency b-the heat receivedper cycle c- the work done by the cycle.6-In an ideal diesel cycle the pressure and the temperature at the beginning ofcompression are 98.5 kPa and 60°C, respectively. The maximum pressure attendduring the cycle is 4.5MPA and heat received during the cycle is 580KJ/kg. Determinea-the compression ratio b- the temperature at the end of compression b- thetemperature at the end of combustion.y-14.p - 1.003J I kgk (15.3:1, 721°C, 1300°C)7- At the commencement of the compression stroke, the cylinder of an oil engine ischarged with air at 96.5kPa and 65°C. Compression takes place to 1/14th of the(41.2kJ)(0.4, 240KJ, 960kJ)original volume according to the law PV35 -C. Fuel the injected, the mass of thefuel injected being 1/40th of that of the air in the cylinder, and combustion takes placeat constant pressure. Taking t5he calorific value of the oil as 44000kJ/kg, determine a-the theoretical pressure and temperature after compression b- the theoreticaltemperature after combustion c- the fraction of the stroke at which combustion istheoretically complete, ep-1.003KJ/kg.K (3400kPa, 579°C, 1649'c, 0.0967)8-A diesel engine has a clearance volume is 0.00025m and bore and stroke of152.5mm and 200mm, respectively. A charge of air at 100kPa and 20°C is taken intothe cylinder and compressed adiabatically y=1.4. After combustion at constantpressure the temperature is 1090°C. The expansion which follows is adiabatic. Find a-the temperature and the pressure at the end of compression b- the temperature andpressure after expansion c- the ideal thermal efficiency of the engine(591°C.4400kPa,227°C,188kPa,0.633)9-In an ideal dual combustion cycle conditions at the commencement of the adiabaticcompression are 93kPa, 0.05m and 24 °C. respectively. The adiabatic compressionvolume ratio is 9:1. The constant volume heat addition pressure ratio is 1.5 and theconstant pressure heat addition volume ratio is 2, if cp=1.05, cv=0.7745 kJ/kgK.Determine a- the pressure, volume and temperature at the state points of the cycle b-the thermal efficiency of the cycle c- the work done by the cyclea- Pi-93VI-0.05TI-24P2-INISV2-0.0056 T2371P3-27225V3-0.0056P4-27225V4-0.0112 T4-1657PS359VS-005TS-K7215 15

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Let us consider below constant volume cycle for…