Home

According to First law of thermodynamics,

A. Total internal energy of a system during a process remains constant

B. Total energy of a system remains constant

C. Workdone by a system is equal to the heat transferred by the system

D. Internal energy, enthalpy and entropy during a process remain constant

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling…
  2. The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will
  3. One Joule (J) is equal to
  4. The behaviour of super-heated vapour is similar to that of
  5. Volumetric strain for a rectangular specimen of length l, breadth b and thickness t subjected to a pull…
  6. During which of the following process does heat rejection takes place in Carnot cycle?
  7. The deformation per unit length is called
  8. Flow stress corresponds to
  9. When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel…
  10. In a free expansion process,
  11. In an extensive property of a thermodynamic system
  12. The total energy of a molecule is shared equally by the various degrees of freedom possessed by it.…
  13. A body is subjected to a direct tensile stress of 300 MPa in one plane accompanied by a simple shear…
  14. The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume…
  15. The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will
  16. In a uniform bar, supported at one end in position, the maximum stress under self weight of bar shall…
  17. When a body is subjected to three mutually perpendicular stresses, of equal intensity, the ratio of…
  18. If a part is constrained to move and heated, it will develop
  19. An isothermal process is governed by
  20. The compression ratio for Diesel engines is
  21. A material obeys hooks law up to
  22. Those substances which have so far not been resolved by any means into other substances of simpler form…
  23. One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.
  24. Workdone in a free expansion process is
  25. A steel bar of 5 mm is heated from 25°C to 45°C and it is free to expand. The bar will induce
  26. The thickness of a thin cylindrical shell with hemispherical ends is __________ that of spherical ends.
  27. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
  28. For a beam, as shown in the below figure, the deflection at C is (where E = Young's modulus for the…
  29. All perfect gases change in volume by 1/273th of its original volume at 0°C for every 1°C change…
  30. The limit of eccentricity for no tensile conditions for a column of circular section of diameter (D)…