Mcq on Rankine cycle- ese 1992 objective question with answer (pdf)

Hello friends welcome in mechanical engineering mcq website. In this mechanical engineering lecture today we solveing the power plant subject multiple choice questions Mcq on Rankine cycle- ESE 1992 objective question with answer (pdf)


Guy's this previous year mcq questions is very important for mechanical engineering students for all competitive exam. So without wasting time let's begin to start Rankine cycle  questions with answers

Mcq on Rankine cycle -ESE 1992




Mcq- 1
In the bottom cycle of cogeneration, low grade waste heat is used for
(ESE - 1992)

A. Feed water heating

B. Power generation 

C. Processing 

D. Can't say

Answer - B

Solution -
In bottom cycle of cogeneration high grade heat used for processing and low grade heat is used for power generation.

But in Upper cycle cogeneration high grade heat used for power generation and low grade heat is used for processing.



Mcq- 2
The efficiency of Rankine cycle is lower than corresponding Carnot cycle because .........
(ESE - 1992)

A. Temperature range of carnot cycle greater than Rankine cycle.
 
B. Average temperature at which heat is added (supplied) in the Rankine cycle is lower than Carnot cycle. 

C. In Rankine cycle steam has working substance and carbon cycle has gas has working substance.

D. Carnot cycle efficiency does not depend upon properties of working substances

Answer - B

Solution -
Wh In carnot cycle heat is supplied at constant temperature process but in Rankine cycle heat is supplied at variable temperature. 

Average temperature of heat added (supplied) in Rankine cycle is lower than Carnot cycle Average temperature of head supplied. Thats why Rankine cycle efficiency is lower than carbon cycle. 



Previous
Next Post »

Please do not entry any spam link in the comment box ConversionConversion EmoticonEmoticon