Work done in a free expansion process is___________________?
Work done in a free expansion process is___________________?
A. + ve
B. -ve
C. zero
D. maximum
E. minimum
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In a free expansion process___________________?
In a free expansion process___________________?A. work done is zero
B. heat transfer is zero
C. both A. and B. above
D. work done is zero but heat increases
E. work done is zero but heat decreasesCarnot cycle is__________________?
Carnot cycle is__________________?A. a reversible cycle (ft) an irreversible cycle
C. a semi-reversible cycle
D. a quasi static cycle
E. an adiabatic irreversible cycleA 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 manufacturer claims to have a heat engine capable of develog 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 possibleAccording to first law of thermodynamics__________________?
According to first law of thermodynamics__________________?A. work done by a system is equal to heat transferred by the system
B. total internal energy of a system during a process remains constant
C. internal energy, enthalpy and entropy during a process remain constant
D. total energy of a system remains constant
E. entropy of a system remains constantThe unit’of universal gas constant is___________________?
The unit’of universal gas constant is___________________?A. watts/°K
B. dynes/°C
C. ergscm/°K
D. erg/°K
E. none of the aboveThe 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