Mechanical Engineering - Thermodynamics

16. 

The property of the system, whose value for the entire system is equal to the sum of their values for the individual parts of the system is called extensive property

A. Yes
B. No

Answer: Option A

Explanation:

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17. 

Coal gas consists mainly of hydrogen, carbon monoxide and various hydrocarbons.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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18. 

High air-fuel ratio in gas turbines

A. increases power output
B. improves thermal efficiency
C. reduces exhaust temperature
D. do not damage turbine blades

Answer: Option C

Explanation:

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19. 

When the finely ground coal is moulded under pressure with or without a binding material, the resulting fuel is called briquetted coal.

A. Yes
B. No

Answer: Option A

Explanation:

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20. 

For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

A. Dual cycle, Diesel cycle, Otto cycle
B. Otto cycle, Diesel cycle, Dual cycle
C. Dual cycle, Otto cycle, Diesel cycle
D. Diesel cycle, Otto cycle, Dual cycle

Answer: Option A

Explanation:

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