First law of thermodynamics deals with

A. Conservation of heat

B. Conservation of momentum

C. Conservation of mass

D. Conservation of energy

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  1. The assumption made in Euler's column theory is that
  2. In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with…
  3. The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar…
  4. True stress strain-curve for materials is plotted between
  5. The most probable velocity of the gas molecules is given by
  6. The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is always…
  7. Two shafts 'A' and 'B' transmit the same power. The speed of shaft 'A' is 250 r.p.m. and that of shaft…
  8. When a beam is subjected to a bending moment, the strain in a layer is __________ the distance from…
  9. A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3,…
  10. In closed cycle gas turbine, the air is compressed
  11. All perfect gases change in volume by 1/273th of its original volume at 0°C for every 1°C change…
  12. The efficiency of Carnot cycle depends upon
  13. The mass of flue gas per kg of fuel is the ratio of the
  14. The heat supplied to the gas at constant volume is (where m = Mass of gas, cv = Specific heat at constant…
  15. The efficiency and work ratio of a simple gas turbine cycle are
  16. The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature…
  17. If in the equation pvn = C, the value of n = ∝, then the process is called
  18. The stress induced in a body, when suddenly loaded, is ________ the stress induced when the same load…
  19. The efficiency of Ericsson cycle is __________ Carnot cycle.
  20. When it is indicated that a member is elastic, it means that when force is applied, it will
  21. Which of the following statement is correct?
  22. In order to know whether a column is long or short, we must know its
  23. In an extensive property of a thermodynamic system
  24. A cycle consisting of two adiabatic and two constant pressure processes is known as
  25. One molecule of oxygen is __________ times heavier than the hydrogen atom.
  26. The value of Poisson's ratio for steel is between
  27. In a reversible adiabatic process, the ratio of T1/T2 is equal to
  28. A cycle consisting of __________ and two isothermal processes is known as Stirling cycle.
  29. A pressure vessel is said to be a thick shell, when
  30. A column that fails due to direct stress, is called