Rankine cycle MCQs : Here you will find MCQ Questions related to "Rankine cycle" in Power Plant. These Rankine cycle MCQ Questions Will help you to improve your Power Plant knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations.
The _____________ is a model used to predict the performance of steam turbine systems
A. Brayton Cycle
B. Binary cycle
C. Rankine cycle
D. All of the above
Explanation: The Rankine cycle is a model used to predict the performance of steam turbine systems. It was also used to study the performance of reciprocating steam engines.
How many processes in the Rankine cycle?
Explanation: There are four processes in the Rankine cycle: Process 1–2, Process 2–3, Process 3–4 and Process 4–1.
_______________ used in these power plants are usually cooling towers and a large water body.
A. heat source
B. hot source
C. cold source
D. cool source
Explanation: The cold source (the colder the better) used in these power plants are usually cooling towers and a large water body (river or sea). The efficiency of the Rankine cycle is limited on the cold side by the lower practical temperature of the working fluid.
In which process, The wet vapour then enters a condenser, where it is condensed at a constant pressure to become a saturated liquid?
A. Process 1–2
B. Process 2–3
C. Process 3–4
D. Process 4–1
Explanation: Process 4–1: The wet vapour then enters a condenser, where it is condensed at a constant pressure to become a saturated liquid.
In a real power-plant cycle, the compression by the pump and the expansion in the turbine are not isentropic.
C. Can be true and false
D. Can not say
Explanation: True, In a real power-plant cycle (the name "Rankine" cycle is used only for the ideal cycle), the compression by the pump and the expansion in the turbine are not isentropic.
RGSC stands for?
A. rankine supercritical cycle
B. regenerative supercritical cycle
C. regenerative supercritical concepts
D. rankine supercritical concepts
Explanation: The Rankine cycle applied using a supercritical fluid combines the concepts of heat regeneration and supercritical Rankine cycle into a unified process called the regenerative supercritical cycle (RGSC).
What is the unit of Heat rate?
Explanation: Heat rate is the rate of input required to produce unit shaft output.
Rankine cycle operating on low pressure limit of p1 and high pressure limit of p2 ___________
A. has lower thermal efficiency than Carnot cycle operating between same pressure limits
B. has higher thermal efficiency than the Carnot cycle operating between same pressure limits
C. has same thermal efficiency as Carnot cycle operating between same pressure limits
D. may be more or less depending upon the magnitudes of p1 and p2
Explanation: Area under P-V curve for Rankine will be more as compared to Carnot cycle.
Rankine cycle comprises of ___________
A. two isentropic processes and two constant volume processes
B. two isothermal processes and two constant pressure processes
C. two isentropic processes and two constant pressure processes
D. None of the above
Explanation: Rankine cycle is a reversible cycle which have two constant pressure and two constant temperature processes.
Process 2-3 is Constant pressure heat addition in boiler.
C. Can be yes or no
D. Can not say
Explanation: Yes, Process 2–3: The high-pressure liquid enters a boiler, where it is heated at constant pressure by an external heat source to become a dry saturated vapour. The input energy required can be easily calculated graphically.