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GATE 2007 previous Year Questions of Thermodynamics
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In this lesson we will discuss GATE 2007 previous Year Questions of Thermodynamics

RUTUJA Bothara
Strengthen GATE /PSU/ESE/SSC JE/RRB JE /campus Placements preparation. A passionate mechanical engineer -VIT University

U
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1. GATE Previous years Thermodynamics questions GATE 2007 Thermodynamics solved questions By Rutuja Bothara

2. RUTUJA BOTHARA . Perusing B.Tech in Mechanical Engineering from Vellore Institute of Technology, Vellore. (2015-2019) . Placed in Alstom Transport India Ltd. . Cleared JEE Mains 2015 Cleared VITEEE-2015 with AIR 8718 unacademy Cracked HITSEEE-2015 with AIR 91 worked as a career. Counsellor in Teachers Academy (2016- 2018) and BOLO app. https://unacademy.com/user/rurutujajb96-9511

3. 2007 Which of the following relationships is valid only for reversible processes undergone by a closed system of simple compressible substance (neglect changes in kinetic and potential energy ?) (B) Tds dU+pdv (D) 8-dUp

4. For closed sys+em) 6u Pdv Yalid for an y proces undergo heby closed Stationarysystem Any Procers reversisle irrevetsible undeegone by a el system tsible

5. Revexsible Procea for ay systun closed system revessible Proces

6. The stroke and bore of a four stroke spark ignition engine are 250 mm and 200 mmrespectively. The clearance volume is 0.001 m If the specic heat ratio 1.4, the air-standard cycle efficiency of the engine is (A) 46.40% (B) 50.10% (C) 58.20%

7. swept volume is compression amo is given by Air Stahdo d eicieney is ien bj

8. A heat transformer is device that transfers a part of the heat, supplied to it at an intermediate temperature, to a high temperature reservoir while rejecting the remaining part to a low temperature heat sink. In such a heat transformer, 100 kJ of heat is supplied at 350 K. The maximum amount of heat in kJ that can be transferred to 400 K, when the rest is rejected to a heat sink at 300 K is (A) 12.50 (C) 33.33 (B) 14.29 (D) 57.14

9. sing eherag balonce Trans fot using elaa sius 3 SO 300 Solving ( 4

10. 2010 In a steam power plant operating on the Rankine cycle, steam enters the turbine at 4MPa, 350 C and exits at a pressure of 15kPa. Then it enters the condenser and exits as saturated water. Next, a pump feeds back the water to the boiler. The adiabatic efficiency of the turbine is 90%. The thermodynamic states of water and steam are given in the table. h(kJ kg) s(kJ kg 1 v mkg) State Steam: 4MPa, 3500C 3092.5 6.5821 0.06645 hy St Sg Vf Water: 15kPa 225.942599.1 0.7549 8.00850.001014 10.02 h is specific enthalpy, s is specific entropy and v the specific volume; subscripts f and g denote saturated liquid state and saturated vapour state

11. Sa ie 2. For sentropic procen ' 2, From able, 0,7548 (8.008c-0.7543

12. Pamp uwork is giuen b Wp = o.oo 1014 x ( 400 -1s

13. Thank You For watching!! RATE REVIEW RECOMMEND