A. All the irreversible engines have same efficiency
B. All the reversible engines have same efficiency
C. Both Rankine and Caront cycles have same efficiency between same temperature limits
D. All reversible engines working between same temperature limits have same-efficiency
E. Between same temperature limits, both petrol and diesel engines have same efficiency
Related Mcqs:
- Pick up the correct statement from the following?
A. critical path method is an improvement upon bar chart method
B. critical path method provides a realistic approach to the daily problems
C. critical path method avoids delays which are very common in bar chart
D. critical path method was invented by Morgan R. Walker of Dupot and James E. Kelley of Remington U.S.A in 1957
E. all of the above - Pick up the correct statement from the following?
A. the float may be positive, zero or negative
B. if the float is positive and the activity is delayed by a period equal to its total float, the completion of project in not delayed
C. if the float of an activity is negative, delay in its performance is bound to delay the completion of project
D. if the float of an activity is zero, the activity is critical and any delay in its performance will delay the whole project
E. all of the above - Pick up the correct statement from the following?
A. programmer evaluation and review technique is event oriented
B. programmer evaluation and review technique is not event oriented
C. critical path method is event oriented
D. critical.path method is not activity oriented
E. none of the above - Which of the following is not the correct method of increasing fatigue limit __________________?
A. shot peening
B. nitriding of surface
C. cold working
D. surface decarburisation
E. under-stressing - Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value ___________________?
A. (1- moisture content)
B. (1 + moisture content)
C. 1 + moisture content
D. 1 – moisture content - Which is correct statement about reaction time for autoignition of fuel and the fuel air ratio__________________?
A. lean mixture has high reaction time
B. rich mixture has high reaction time
C. chemically correct mixture has mini-mum reaction time
D. all of the above
E. non of the above - The theoretically correct mixture of air and petrol is approximately ________________?
A. 0.334027778
B. 0.500694444
C. 0.625694444
D. 0.834027778 - The correct sequence for descending order of machinability is _____________________?
A. grey cast iron, low carbon steel, wrought iron
B. low carbon steel, grey cast iron, wrought iron
C. wrought iron,low carbon steel, grey cast iron
D. wrought iron, grey cast iron, low carbon steel
E. grey cast iron, wrought iron, low carbon steel - Which is not correct statement about the function of furnace____________________?
A. to provide proper conditions for con-tinuous complete combustion
B. mix fuel with air and ignite
C. separate ash from coal
D. maintain heat supply to prepare and ignite the incoming fuel
E. to minimise radiation losses - Which is not the correct statement about moisture in coal ______________________?
A. inherent moisture and surface mois¬ture are different things
B. in some coals moisture may be present upto 40%
C. some moisture in coal helps in better burning which is not possible with completely dry coal
D. it increases thermal efficiency
E. moisture in coal is removed before firing by heating it with hot air
