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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

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Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

All Topics  1919

The compressor performance at higher altitude compared to sea level will be _______________?
A same
B higher
C lower
D dependent on other factors
Correct Answer: lower
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
Correct Answer: constant speed unloader
An air compressor may be controlled by____________________?
A throttle control B. clearance control
B
C blow-off control
D any one of the above
Correct Answer: any one of the above
Separators in compressor installations are located_____________________?
A before intercooler
B after intercooler
C after receiver
D between after-cooler and air receiver
Correct Answer: between after-cooler and air receiver
Mining industry usually employs following motive power___________________?
A A.C. electric motor
B compressed air
C petrol engine
D diesel engine
Correct Answer: compressed air
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
Correct Answer: by running compressor at very slow speed
The capacity of compressor will be highest when its intake temperature is___________________?
A lowest
B highest
C anything.
D atmospheric
Correct Answer: atmospheric
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