Thermodynamics - Data Intensity 1 | Multiple Questions and Answers

11.	The efficiency of Diesel cycle approaches to Otto cycle efficiency when

	A.	cut-off is increased
	B.	cut-off is decreased
	C.	cut-off is zero
	D.	cut-off is constant

12.	The entropy ___ in an irreversible cyclic process.

	A.	remains constant
	B.	decreases
	C.	increases
	D.	none of above

14.	The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is

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

15.	Carbonisation of coal consists of

	A.	drying and crushing the coal to a fine powder
	B.	moulding the finely ground coal under pressure with or without a binding material
	C.	heating the wood with a limited supply of air to temperature not less than 280�C
	D.	none of the above