Steam and Gas Turbines Questions and Answers – Fuel Injection, Atomization and Combustion Chamber

This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Fuel Injection, Atomization and Combustion Chamber”.

1. Nozzles are also a part of gas turbine _________
a) combustor
b) compressor
c) fuel injection
d) none of the mentioned
View Answer

Answer: c
Explanation: In gas turbine fuel injection nozzles are used for atomization.

2. ___________ are present in gas turbine fuel injectors.
a) Vaporizers
b) Recuperators
c) Nozzles
d) None of the mentioned
View Answer

Answer: a
Explanation: Vaporizers are also a part of fuel injectors.

3. ____________ are also a part of gas turbine fuel injectors.
a) Swirlers
b) Nozzles
c) Recuperators
d) None of the mentioned
View Answer

Answer: b
Explanation: Swirlers present in gas turbine fuel injectors turns the movement of gas inside the injector to swirling motion so that combustion efficiency is high. Nozzles are used to inject fuel.
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4. Afterburner spray bars are present in gas turbine fuel injectors.
a) True
b) False
View Answer

Answer: a
Explanation: Afterburner spray bars are present in fuel injectors.

5. When fuel injectors efficiency is optimized then overall efficiency of gas turbines is __________
a) remains constant
b) decreased
c) increased
d) none of the mentioned
View Answer

Answer: c
Explanation: When fuel injectors efficiency is optimized then overall efficiency of gas turbines is increased.
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6. __________ of engines are determined from fuel injectors.
a) Efficiency
b) Emissions
c) Efficiency & Emissions
d) None of the mentioned
View Answer

Answer: c
Explanation: Fuel injectors also plays a major role in defining emissions. Working of fuel injectors determines both emissions and efficiency.

7. Lean mixtures give _________ efficiency.
a) optimal
b) higher
c) lower
d) none of the mentioned
View Answer

Answer: a
Explanation: Lean mixture give optimal efficiency.
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8. In low fuel combustion lean mixture have _______ efficiency.
a) high
b) low
c) medium
d) none of the mentioned
View Answer

Answer: b
Explanation: In low fuel combustion lean mixture have low efficiency.

9. Fuel droplet size effects the _________
a) combustion
b) effects
c) combustion & effects
d) none of the mentioned
View Answer

Answer: a
Explanation: When fuel droplet size is minimized combustion is maximized. Combustion directly effects the efficiency of the gas turbine.
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10. Airflow controls the rate of combustion.
a) True
b) False
View Answer

Answer: a
Explanation: Airflow determines the mixture of fuel which controls the rate of combustion.

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

To practice 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]

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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.

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