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GATE 2008 previous Year Questions of Thermodynamics
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In this lesson we will discuss GATE 2008 previous Year Questions of Thermodynamics

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

Unacademy user
Great effort Guru g🙏🙏
there is always inherent entropy change due to mixing as the randomness increases,SO the first question you solved is wrong.
  1. GATE Previous years Thermodynamics questions GATE 2008 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.

  3. 2008 #2 moles of oxygen are mixed adiabatically with another 2 moles of oxygen in mixing chamber, so that the final total pressure and temperature of the mixture become same as those of the individual constituents at their initial states. The universal gas constant is given as R. The change in entropy due to mixing, per mole of oxvaen, is given by (A) - Rln2 (B) 0 (C) RIn2 (D) RIn 4

  4. Process is adiabatc de s o

  5. Which one of the following is NOT a necessary The working fluid is an ideal gas with constant specific - All processes are both internally as well as externally - Intake and exhaust processes are constant volume heat Thecombustion process is a constant volume heat assumption for the air-standard Otto cycle? heats. reversible rejection processes. addition process. ,

  6. Irtake Proces 3 G ! 2 16

  7. A gas expands in a frictionless piston-cylinder arrangement. The expansion process is very slow, and is resisted by an ambient pressure of 100 kPa. During the expansion process, the pressure of the system (gas) remains constant at 300 kPa. The change in volume of the gas is 0.01 m. The maximum amount of work that could be utilized from the above process is (A) 0 kJ (B) 1 kJ (C) 2 kJ (D) 3 kJ

  8. atm) Maximum uoor K that Can e utilized from tha system W = (800-100)0.01

  9. A cyclic device operates between three reservoirs, as shown in the figure. Heat is transferred to/from the cycle device. It is assumed that heat transfer between each thermal reservoir and the cyclic device takes place across negligible temperature difference. Interactions between the cyclic device and the respective thermal reservoirs that are shown in the figure are all in the form of heat transfer. 1000 K 500 K 300 K 50 kJ 100 kJ Cyclic Device 60 kJ (a) a reversible heat engine (B) a reversible heat pump or a reversible refrigerator (C) an irreversible heat engine (D) an irreversible heat pump or an irreversible refrigerator

  10. Using clausiu nequaty Device is reve&Suble heat ehajne

  11. Balloon ruptures in evacuated ahd insalated roon Case of -free ex pansion So according to 1a of Tue mo dy namics

  12. Air Supply Line Valve Tank (A) is greater than 350 C (C) is equal to 350 C (D) may be greater than, less than, or equal to, 350 C depending on the (B) is less than 350 C volume of the tank