Thermal Engineering MCQ with Answers

26) For the same compression ratio, the efficiency of dual combustion cycle is

Answer is:

Greater than Diesel cycle and less than Otto cycle

27) The efficiency of Diesel cycle depends upon

Answer is:

Cut off ratio and compression ratio

The efficiency of Diesel cycle depends upon

28) The principal constituents of a fuel are

Answer is:

Carbon and hydrogen

29) The amount of heat generated per kg of fuel is known as

Answer is:

Calorific value

30) Which of the following has the highest calorific value ?

Answer is:

Anthracite coal

Explanation:

Anthracite, also known as hard coal, is a hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.