Steam Turbines Questions and Answers – Adiabatic Efficiency

This set of Steam Turbines Aptitude Test focuses on “Adiabatic Efficiency “.

1. Adiabatic efficiency is the ___________ of actual work required by condenser to bring to certain temperature and actual work input.
a) product
b) ratio
c) sum
d) none of the mentioned
View Answer

Answer: b
Explanation: Adiabatic efficiency is the ratio of work required to raise to a certain temperature to actual work input.

2. While calculating adiabatic efficiency of a nozzle exit conditions for iso-entropic nozzle are ___________
a) Exit temperature are equal
b) Exit pressure’s are equal
c) Inlet states are same
d) All of the mentioned
View Answer

Answer: d
Explanation: While calculating adiabatic efficiency of nozzle exit temperature, pressure and inlet states of iso-entropic nozzle are treated the same as normal one.

3. For calculating adiabatic efficiency they are ________ iso-entropic efficiency.
a) not compared with
b) compared with
c) multiplied with
d) none of the mentioned
View Answer

Answer: b
Explanation: Adiabatic efficiency is always calculated by comparing with isoentropic efficiency.
advertisement
advertisement

4. It is assumed that all the processes internally are _________
a) reversible
b) irreversible
c) reversible but not in all conditions
d) none of the mentioned
View Answer

Answer: a
Explanation: It is assumed that all the processes internally are reversible.

5. In air standard assumption combustion is replaced by ___________
a) heat rejection
b) heat addition
c) compression
d) none of the mentioned
View Answer

Answer: b
Explanation: In air standard assumption combustion is replaced by heat addition.
Note: Join free Sanfoundry classes at Telegram or Youtube

6. In air standard assumptions heat exhaust process is replaced by _________
a) heat addition
b) compressio
c) heat rejection
d) none of the mentioned
View Answer

Answer: c
Explanation: In air standard assumptions exhaust process is replaced by heat rejection process.

7. In air standard process working fluid air is assumed as an ____________
a) ideal gas
b) inert gas
c) high pressure gas
d) none of the mentioned
View Answer

Answer: a
Explanation: In air standard assumptions working fluid air is assumed as ideal gas and assumed to rotate in closed loop.
advertisement

8. In Air standard cycle air standard assumptions are ________
a) not applicable
b) applicable
c) depends on the situation
d) none of the mentioned
View Answer

Answer: b
Explanation: Air standard cycle is a cycle where air standard assumptions are applicable.

9. Maximum work output that can be obtained from a system is called as _______
a) Adiabatic efficiency
b) Isoentropic efficiency
c) Availability
d) None of the mentioned
View Answer

Answer: c
Explanation: Availability is the maximum work output that can be obtained from a system.
advertisement

10. Combination of _______ vapor cycles is called as binary vapor cycle.
a) two
b) one
c) multi
d) none of the mentioned
View Answer

Answer: a
Explanation: Binary vapor cycle is a combination of two cycles one operated at high temperatures and others operated at low temperatures.

Sanfoundry Global Education & Learning Series – Steam and Gas Turbines.

To practice all areas of Steam Turbines for aptitude tests, here is complete set of 1000+ Multiple Choice Questions and Answers

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

advertisement
advertisement
Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.