Brayton cycle consists’ of following four processes____________________?

Related Mcqs:

1. Otto cycle consists of following four processes____________________?

   A. two isothermals and two isentropics
   B. two isentropics and two constant volumes
   C. two isentropics, one constant volume and one constant pressure
   D. two isentropics and two constant pres-sures
   E. none of the above

2. 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

3. 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

4. Diesel cycle consists of following four processes_________________?

   A. two isothermals and two isentropics
   B. two isentropics, and two constant volumes.
   C. two isentropics, one constant volume and one constant pressure
   D. two isentropics and two constant pressures
   E. none of the above

5. 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

6. Gas turbine cycle consists of___________________?

   A. two isothermals and two isentropics
   B. two isentropics and two constant volumes
   C. two isentropics, one constant volume and one constant pressure
   D. two isentropics and two constant pressures
   E. none of the above

7. In order that a cycle be reversible, following must be satisfied ________________?

   A. free expansion or friction resisted expansion/compression process should not be encountered
   B. when heat is being absorbed, temperature of hot source and working sub¬stance should be same
   C. when beat is being rejected, temperature of cold source and working sub-stance should be same
   D. all of the above
   E. none of the above

8. The following cycle is used for air craft refrigeration___________________?

   A. Brayton cycle
   B. Joule cycle
   C. Carnot cycle
   D. Bell-Coleman cycle
   E. Reversed-Brayton cycle

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

   A. Otto cycle
   B. Ericsson cycle
   C. Joule cycle
   D. Stirling cycle
   E. Atkinson cycle

10. The efficiency of Carnot cycle is maximum for_____________________?

    A. gas engine
    B. well lubricated engine
    C. petrol engine
    D. steam engine
    E. reversible engine