A. temperature
B. pressure
C. both pressure and temperature
D. variation of its constituents
E. air flow

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Related Mcqs:

  1. Specific heat of air at constant pressure is equal to___________________?
    A. 0.17 B. 0.21 C. 0.24 D. 1.0 E. 1.41...
  2. Which law states that the specific heat of a gas remains constant at all temperatures and pressures______________________?
    A. Charles’ Law B. Joule’s Law C. Regnault’s Law D. Boyle’s Law E. there is no such law...
  3. The ratio of two specific heats of air is equal to____________________?
    A. 0.17 B. 0.24 C. 0.1 D. 1.41 E. 2.71...
  4. A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is__________________?
    A. justified B. not possible C. may be possible with lot of sophistications D. cost will be very high E. theroretically possible...
  5. Total heat of a substance is also known as __________________?
    A. internal energy B. entropy C. thermal capacity D. enthalpy E. thermal conductance...
  6. The index of compression n tends to reach ratio of specific heats y when____________________?
    A. flow is uniform and steady B. process is isentropic C. process is isothermal D. process is isentropic and specific heat does not change with temperature E. process is isentropic and specific heat changes with temperature...
  7. The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will______________?
    A. increase B. decrease C. remain unchanged D. increase/decrease depending on ap-plication E. unpredictable...
  8. The ideal efficiency of a Brayton cycle without regeneration with increase ni pressure ratio will_________________?
    A. increase B. decrease C. remain unchanged D. increase/decrease depending on application E. unpredictable...
  9. Heat and work are ____________________?
    A. point functions B. system properties C. path functions D. intensive properties E. extensive properties...
  10. A heat exchange process in which the product of pressure and volume remains constant is known as_______________?
    A. heat exchange process B. throttling process C. isentropic process D. adiabatic process E. hyperbolic process...
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