Steam Nozzles and Turbines - Data Intensity 4 | Multiple Questions and Answers

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Steam Nozzles and Turbines - Data Intensity 4 Multiple Questions and Answers.

11.	The effect of friction in the nozzle _____ dryness fraction of steam.

	A.	has no effect on
	B.	decreases
	C.	increases
	D.	none of above

12.	In an ideal impulse turbine, the

	A.	absolute velocity at the inlet of moving blade is equal to that at the outlet
	B.	relative velocity at the inlet of the moving blade is equal to that at the outlet
	C.	axial velocity at inlet is equal to that at the outlet
	D.	whirl velocity at inlet is equalto that at the outlet

13.	In a reaction turbine, when steam flows through the moving blades,

	A.	pressure increases while velocity decreases
	B.	pressure decreases while velocity increases
	C.	pressure and velocity both decreases
	D.	pressure and velocity both increases

14.	The critical pressure ratio is given by (where p1 = Initial pressure of steam, and p2 = Pressure of steam at throat or critical pressure)

	A.	p1 p2
	B.	p1/p2
	C.	p2/p1
	D.	p1 + p2

15.	A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as

	A.	back pressure turbine
	B.	pass out turbine
	C.	low pressure turbine
	D.	impulse turbine

Read More :

» Steam Nozzles and Turbines - Data Intensity 1

» Steam Nozzles and Turbines - Data Intensity 2

» Steam Nozzles and Turbines - Data Intensity 3

» Steam Nozzles and Turbines - Data Intensity 4

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