Mechanical Engineering MCQs

2075 MCQs  (Page 5 of 208)

Attempt Mechanical Engineering Mcqs Quiz
In multistage compressor, the isothermal compression is achieved by_________________?
A. Employing intercooler
B. By constantly cooling the cylinder
C. By running compressor at very slow speed
D. By insulating the cylinder
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Mining industry usually employs following motive power___________________?
A. c. electric motor
B. Compressed air
C. Petrol engine
D. Diesel engine
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Separators in compressor installations are located_____________________?
A. Before intercooler
B. After intercooler
C. After receiver
D. Between after-cooler and air receiver
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An air compressor may be controlled by____________________?
A. Throttle control
B. Clearance control
C. Blow-off control
D. Any one of the above
E. none of the above
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During peak load periods, the best method of controlling compressors is___________________?
A. Start-stop motor
B. Constant speed unloader
C. Relief valve
D. Variable speed
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The compressor performance at higher altitude compared to sea level will be _______________?
A. Same
B. Higher
C. Lower
D. Dependent on other factors
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A centrifugal compressor works on the principle of__________________?
A. Conversion of pressure energy into kinetic energy
B. Conversion of kinetic energy into pres¬sure energy
C. Centripetal action
D. Generating pressure directly
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A compressor at high altitude will draw________________?
A. More power
B. Less power
C. Same power
D. More/less power depending on other factors
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The thrust on the rotor in a centrifugal compressor is produced by________________?
A. Radial component
B. Axial component
C. Tangential component
D. Resultant component
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The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is_____________________?
A. Less
B. More
C. Same
D. More/less depending on compressor capacity
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Word of the Day
27 Sep
Undesirable
not wanted or desirable because harmful, objectionable, or unpleasant.
غیر مطلوب، ناروا، نامناسب

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