Which of the following is an irreversible cycle_____________________?
A. carnot
B. Stirling
C. ericsson
D. all of the above
E. none of the above
Month: January 2019
The efficiency of a Carnot engine depends on_______________________?
The efficiency of a Carnot engine depends on_______________________?
A. working substance
B. design of engine
C. size of engine
D. type of fuel fired
E. temperatures of source and sink
The efficiency of Carnot cycle is maximum for_____________________?
The efficiency of Carnot cycle is maximum for_____________________?
A. gas engine
B. well lubricated engine
C. petrol engine
D. steam engine
E. reversible engine
Diesel cycle consists of following four processes_________________?
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
Stirling and Ericsson cycles are__________________?
Stirling and Ericsson cycles are__________________?
A. reversible cycles
B. irreversible cycles
C. quasi-static cycles
D. semi-reversible cycles
E. adiabatic irreversible cycles
Reversed joule cycle is called_________________?
Reversed joule cycle is called_________________?
A. Carnot cycle
B. Rankine cycle
C. Brayton cycle
D. Bell Coleman cycle
E. Dual cycle
Which of the following cycles is not a reversible cycle_____________________?
Which of the following cycles is not a reversible cycle_____________________?
A. Carnot
B. Ericsson
C. Stirling
D. Joule
E. none of the above
The efficiency of Diesei cycle with decrease in cut off_________________?
The efficiency of Diesei cycle with decrease in cut off_________________?
A. increases
B. decreases
C. remains unaffected
D. first increases and then decreases
E. first decreases and then increases
The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that___________________?
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
The following cycle is used for air craft refrigeration___________________?
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