@⇒ Compressors, Gas Turbines and Jet Engines ⇒ Mechanical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, short cut notes, rapid fire notes, best theory

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Q1.	For supplying intermittent small quantity of air at high pressure, following compressor is best suited
A.	centrifugal [Wrong Answer]
B.	reciprocating [Correct Answer]
C.	axial [Wrong Answer]
D.	screw [Wrong Answer]
E.	turbo jet. [Wrong Answer]
View Answer 52 -23 Explanation:- Answer : B Discuss it below : Click here for more comments


Q2.	For minimum work in multistage compression, assuming same index of compression in all stages
A.	work done in first stage should be more [Wrong Answer]
B.	work done in subsequent stages should increase [Wrong Answer]
C.	work done in subsequent stages should decrease [Wrong Answer]
D.	work done in all stages should be equal [Correct Answer]
E.	work done in any stage is no criterion for minimum work but depends on other factors. [Wrong Answer]
View Answer 29 -11 Explanation:- Answer : D Discuss it below : Manu Gazpati Said on 2020-10-03 23:40:18 how can you elaborate it here Click here for more comments


Q3.	For a two stage compressor* if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will
A.	increase [Correct Answer]
B.	decrease [Wrong Answer]
C.	remain unaffected [Wrong Answer]
D.	other factors control it [Wrong Answer]
E.	unpredictable. [Wrong Answer]
View Answer 12 -7 Explanation:- Answer : A Discuss it below : Click here for more comments


Q4.	Diffuser in a compressor is used to
A.	increase velocity [Wrong Answer]
B.	make the flow stream-line [Wrong Answer]
C.	convert pressure energy into kinetic energy [Wrong Answer]
D.	convert kinetic energy into pressure energy [Correct Answer]
E.	increase degree of reaction. [Wrong Answer]
View Answer 11 -3 Explanation:- Answer : D Discuss it below : Click here for more comments


Q5.	The ratio of isentropic work to euler's work is known as
A.	compressor efficiency [Wrong Answer]
B.	isentropic efficiency [Wrong Answer]
C.	Euler's efficiency [Wrong Answer]
D.	pressure coefficient [Correct Answer]
E.	pressure ratio. [Wrong Answer]
View Answer 12 -3 Explanation:- Answer : D Discuss it below : Click here for more comments

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