An adiabatic wall is one which__________________?
(A) prevents thermal interaction
(B) permits thermal interaction
(C) encourages thermal interaction
(D) discourages thermal interaction
(D) dos not exist.
In a Carnot cycle, heat is transferred at_______________________?
(A) constant pressure
(B) constant volume
(C) constant temperature
(D) constant enthaply
(D) any one of the above
An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is___________________?
(A) feasible
(B) impossible
(C) possible
(D) possible, but with lot of sophistications
(D) desirable
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
(D) all of the above
Carnot cycle efficiency is maximum when______________?
(A) initial temperature is 0°K
(B) final temperature is 0°K
(C) difference between initial and final temperature is 0°K
(D) final temperature is 0°C
(D) initial temperature is minimum possible
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
(D) Stirling cycle
Brayton 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
(D) none of the above
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
(D) Atkinson cycle
If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle___________________?
(A) more
(B) less
(C) equal
(D) depends on other factors
(D) none of the above
For same compression ratio and for same heat added_________________?
(A) Otto cycle is more efficient than Diesel cycle
(B) Diesel cycle is more efficient than Otto cycle
(C) efficiency depends on other factors
(D) both Otto and Diesel cycles are equally efficient
(D) none of the above