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.
30) Which of the following has the highest calorific value ?
Answer is:
Anthracite coal
Explanation:
Related Thermal Engineering MCQ with Answers
Answer is:
Passing air and a large amount of steam over waste coal at about 650 degree Celsius
Answer is:
Half
Answer is:
Otto cycle
Explanation:
Otto cycle is also known as constant volume cycle, as the heat is received and rejected at a constant volume. Otto cycle is used in gas, petrol and many of the oil engines. Otto cycle is a thermodynamic cycle on which the petrol engine works.
The ideal Otto cycle consists of two constant volume and two reversible adiabatic or isentropic processes.
Otto cycle is taken as a standard of comparison for internal combustion engines. For the purpose of comparison with other cycles, the air is assumed to be the working substance.
