Thermodynamics - Data Intensity 3 | Multiple Questions and Answers

16.	The heat and mechanical energies are mutually convertible. This statement was established by

	A.	Boyle
	B.	Charles
	C.	Joule
	D.	none of these

17.	For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.

	A.	greater than
	B.	less than
	C.	equal to
	D.	none of above

18.	Mond gas is obtained by

	A.	partial combusion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
	B.	carbonisation of bituminous coal
	C.	passing steam over incandescent coke
	D.	passing air and a large amount of steam over waste coal at about 650�C

20.	The condition for the reversibility of a cycle is

	A.	the pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process
	B.	all the processes, taking place in the cycle of operation, must be extremely slow
	C.	the working parts of the engine must be friction free
	D.	all of the above