Atmospheric pressure is equal to____________?
Atmospheric pressure is equal to____________?A. 1.013 bar
B. 760mm of Hg
C. 101.3KN/m2
D. All of these
B. 760mm of Hg
C. 101.3KN/m2
D. All of these
Mechanical Engineering Mcqs
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What is the most common valve used in piping systems to throttle or regulate flow ?
What is the most common valve used in pig systems to throttle or regulate flow ?A. Globe valve
B. Gate valve
C. Butterfly valve
D. Plug valve -
Ball valves are commonly used to_________?
Ball valves are commonly used to_________?A. throttle flow
B. check flow
C. change flow direction
D. start/stop flow -
Which tool is used to measure gap size in a rough alignment?
Which tool is used to measure gap size in a rough alignment?A. Inside caliper
B. Dial indicator
C. Feeler gage
D. Measuring tape -
The part of the coupling that actually transmits power and rotation from one shaft to the other shaft is_________?
The part of the coupling that actually transmits power and rotation from one shaft to the other shaft is_________?A. gap
B. hub
C. key
D. driver -
The stress developed in a material at breaking point in extension is called__________?
The stress developed in a material at breaking point in extension is called__________?A. Breaking stress
B. Fracture stress
C. Yield point stress
D. Proof stress -
Aeroplanes employ following type of compressor_______________?
Aeroplanes employ following type of compressor_______________?A. radial flow
B. axial flow
C. centrifugal
D. combination of above
E. none of the above -
Compression efficiency is compared against_____________________?
Compression efficiency is compared against_____________________?A. ideal compression
B. adiabatic compression
C. botii isothermal and adiabatic compression
D. isentropic compression
E. isothermal compression -
An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes_______________?
An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes_______________?A. one adiabatic, two isobaric, and one constant volume
B. two adiabatic and two isobaric
C. two adiabatic, one isobaric and one constant volume,
D. one adiabatic, one isobaric and two constant volume
E. two isobaric, two adiabatic and one constant volume -
The work done per unit mass of air in compression will’be least when n is equal to______________?
The work done per unit mass of air in compression will’be least when n is equal to______________?A. 1
B. 1.2 ,
C. 1.3
D. 1.4
E. 1.5