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
Related Mcqs:
- 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 - If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly_________________?
A. temperature
B. enthalpy
C. internal energy
D. entropy
E. all of the above - Which of the following cycles is not a reversible cycle_____________________?
A. Carnot
B. Ericsson
C. Stirling
D. Joule
E. none of the above - In a non-flow reversible process for which p = (- 3V+ 15) x 105N/m2,V changes from 1 m to 2 m3. The work done will be about_______________?
A. 100 xlOO5 joules
B. lxlO5 joules
C. 10 xlO5 joules
D. 10 xlO5 kilo joules
E. 10xl04kiojoules - Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?
A. pressure
B. temperature
C. volume
D. internal energy
E. entropy - Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant_______________?
A. pressure
B. temperature
C. volume
D. internal energy
E. entropy - For reversible adiabatic process, change in entropy is_________________?
A. maximum
B. minimum
C. zero
D. unpredictable
E. negative. - For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be___________________?
A. zero
B. minimum
D. maximum
D. infinity
E. there is no such criterion - 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 - 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
