A cycle consisting of two adiabatics and two constant pressure processes is known as___________________?

Related Mcqs:

1. The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as_________________?

   A. Dual combustion cycle
   B. Diesel cycle
   C. Atkinson cycle
   D. Rankine cycle
   E. Stirling cycle

2. The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that___________________?

   A. carnot cycle can’t work with saturated steam
   B. heat is supplied to water at temperature below the maximum temperature of the cycle
   C. a rankine cycle receives heat at two places
   D. rankine cycle is hypothetical
   E. none of the above

3. 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

4. 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

5. 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

6. 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

7. According to which law, all perfect gases change in volume by l/273th of their original volume at 0°C for every 1°C change in temperature when pressure remains constant ____________________?

   A. Joule’s law
   B. Boyle’s law
   C. Regnault’s law
   D. Gay-Lussac law
   E. Charles’ law

8. A perfect gas at 27°C is heated at constant pressure till its volume is double. The final temperature is________________?

   A. 54°C
   B. 327°C
   C. 108°C
   D. 654°C
   E. 600°C

9. Addition of heat at constant pressure to a gas results in________________?

   A. raising its temperature
   B. raising its pressure
   C. raising its volume
   D. raising its temperature and doing external work
   E. doing external work

10. If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to__________________?

    A. + v
    B. – ve
    C. zero
    D. pressure x volume
    E. any where between zero and infinity