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.Management Sciences
Category: Mechanical Engineering Mcqs
The thermodynamic efficiency of rotary compressor is based on_______________?
A. isothermal compression
B. adiabatic compression
C. isentropic compression
D. polytropic compression
E. none of the above
In the axial flow gas turbine, the work ratio is the ratio of____________________?
A. compressor work and turbine work
B. output and input
C. actual total head tempeature drop to the isentrpic total head drop from total head inlet to static head outlet
D. actual compressor work and theoretical comprssor work
E. none of the above
The force acting along the circumference will cause stress in the walls in a direction normal to the longitudinal axis of cylinder; this stress is called___________________?
A. longitudinal stress
B. hoop stress
C. yeiled stress
D. ultimate stress
E. none of the above
Water contained in a beaker can be made to boil by passing steam through it__________________?
A. at atmospheric pressure
B. at a pressure below the firuosphejric pressure
C. at a pressure greater than atmospheric pressure
D. any pressure
E. not possible
In heat exchangers, degree of approach is defined as the difference between temperatures of________________?
A. cold water inlet and outlet
B. hot medium inlet and outlet
C. hot medium outlet and cold water inlet
D. hot medium outlet and cold water outlet
E. none of the above
The crest diameter of a screw thread is same as _____________________?
A. major diameter
B. minor diameter
C. pitch diameter
D. core diameter
E. none of the above
According to fan laws, at constant speed and capacity, the pressure and power vary_____________________?
A. directly as the air or gas density
B. inversely as square root of density
C. inversely as density
D. as square of density
E. as square root of density
The reasons which are basically responsible for the formation of a queue should be that ___________________?
A. the average service rate Hess than the average arrival rate
B. output rate is linearly proportional to input
C. output rate is constant and the input varies in a random manner
D. all of the above
E. none of the above
Which of the following statement is wrong ?
A. The mortise gauge has two scribing pins
B. The gouges are chisels with a hollow shaped blade
C. An auger is a planning tool
D. all of these
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