Home

Workdone during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)

A. (p1 v1 - p2 v2)/(γ - 1)

B. [m R (T1 - T2)] /(γ - 1)

C. [m R T1/(γ - 1)][1 - (p2 v2 /p1 v1)]

D. All of these

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

You can do it
  1. A cube subjected to three mutually perpendicular stress of equal intensity p expenses a volumetric strain
  2. The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as
  3. Modular ratio of two materials is the ratio of
  4. When a gas is heated at constant pressure
  5. The absolute zero pressure will be
  6. The hard coke is obtained when carbonisation of coal is carried out at
  7. The pull required to tear off the plate per pitch length is (where p = Pitch of rivets, t = Thickness…
  8. The bending moment of a cantilever beam of length l and carrying a uniformly distributed load of w per…
  9. In compression test, the fracture in cast iron specimen would occur along
  10. A series of operations, which takes place in a certain order and restore the initial conditions at the…
  11. A process, in which the working substance neither receives nor gives out heat to its surroundings during…
  12. The property of a working substance which increases or decreases as the heat is supplied or removed…
  13. The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
  14. For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order
  15. A thin cylindrical shell of diameter (D) and thickness (t) is subjected to an internal pressure (p).…
  16. Which of the following is the correct statement?
  17. The torque transmitted by a solid shaft of diameter (D) is (where τ = Maximum allowable shear stress)
  18. The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)
  19. According to Avogadro's law, the density of any two gases is __________ their molecular masses, if the…
  20. When a gas is heated, change takes place in
  21. The tensile strength of the welded joint for double fillet is (where s = Leg or size of the weld, l…
  22. Euler's formula holds good only for
  23. The extension of a circular bar tapering uniformly from diameter d₁ at one end to diameter d₂…
  24. In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress…
  25. A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.
  26. The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx…
  27. The temperature at which the volume of a gas becomes zero is called
  28. In a tensile test, near the elastic limit zone, the
  29. The total elongation produced in a bar of uniform section hanging vertically downwards due to its own…
  30. For riveting, the size of hole drilled in plates is __________ shank diameter of rivet.