Steam and Gas Turbines Questions and Answers – Combustion and Thermochemistry

This set of tough Steam and Gas Turbines Questions focuses on “Combustion and Thermochemistry”.

1. Combustor is also known as __________
a) flame holder
b) burner
c) flame holder & burner
d) none of the mentioned
View Answer

Answer: a
Explanation: Combustion takes place in combustor. It is also known as flame holder. Combustor can also be called as burner. Flame holder is used to hold the flame in the combustor.

2. In gas turbine combustion chamber is fed with __________ pressure high temperature gas.
a) low
b) high
c) medium
d) none of the mentioned
View Answer

Answer:b
Explanation: In gas turbine combustor is fed with high pressure gas. As the pressure is very high as soon as oxygen is supplied in fuel starts burning.

3. When combustor pressure decreases efficiency _________
a) increases
b) decreases
c) remains constant
d) none of the mentioned
View Answer

Answer: b
Explanation: When combustor pressure decreases its efficiency decreases as it is directly proportional.
advertisement
advertisement

4. In an ideal combustor exit temperature must be _________
a) decreasing
b) increasing
c) constant
d) none of the mentioned
View Answer

Answer: c
Explanation: When exit temperature is not uniform thermal stress develops on the walls of combustor.

5. In air crafts combustors are constrained by size and weight.
a) True
b) False
View Answer

Answer:a
Explanation: In air craft combustors are constrained by size and weight.
Note: Join free Sanfoundry classes at Telegram or Youtube

6. Combustors ________ pollutants.
a) increase
b) decrease
c) remains constant
d) none of the mentioned
View Answer

Answer: b
Explanation: Combustors reduce pollutants. The work of combustor is to assure that fuel is completely burned, when the fuel is completely burned pollutants will be reduced.

7. Swirler is the _____ part in the combustor.
a) first
b) middle
c) last
d) none of the mentioned
View Answer

Answer: a
Explanation: When air enters combustor it firstly passes through swirler where it induces swirling motion.
advertisement

8. Nitrogen oxides are released from ________
a) combustors
b) burners
c) combustors & burners
d) none of the mentioned
View Answer

Answer: c
Explanation: Nitrogen oxide is also a type of pollutant released from combustor.

9. CO pollutant released from combustor is emitted during _______ process.
a) reduction
b) oxidation
c) co is released no where
d) none of the mentioned
View Answer

Answer: b
Explanation: Carbon monoxide is released during oxidizing process.
advertisement

10. Nitrogen oxides are produced during combustion zone.
a) True
b) False
View Answer

Answer: a
Explanation: Nitrogen oxides are produced during combustion zone.

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

To practice tough questions on all areas of Steam and Gas Turbines, 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.