A. create vacuum in furnace
B. create vacuum at turbine exhaust
C. pump feed water
D. dose chemicals in feed water
E. control steam temperature by injecting water
Mechanical Engineering Mcqs
The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. per ton of refrigeration__________________?
A. 0.1 to 0.5 h.p. per ton of refrigeration
B. 0.5 to 0.8 h.p. per ton of refrigeration
C. 1 to 2 h.p. per ton of refrigeration
D. 2 to 5 h.p. per ton of refrigeration
E. 5 to 10 h.p. per ton refrigeration
Queuing theory is associated with __________________?
A. sales
B. inspection time
C. waiting time
D. production time
E. inventory
Which one of the following statements is not correct_________________?
A. the tangent of the angle of friction is equal to coefficient of friction
B. the angle of repose is equal to angle of friction
C. the tangent of the angle of repose is equal to coefficient of friction
D. the sine of the angle of repose is equal to coefficient to friction
E. none of the above
A closed system is one in which_________________________?
A. mass does not cross boundaries of the system, though energy may do so
B. mass crosses the boundary but not the energy
C. neither mass nor energy crosses the boundaries of the system
D. both energy and mass cross the boundaries of the system
E. thermodynamic reactions take place
The process layout is best suited where______________?
A. specialisation exists
B. machines are arranged according to sequence of operation
C. few number of non-standardised units are to be produced
D. mass production is envisaged
E. bought out items are more
For simple harmonic motion of the of follower, a cosine curve represents___________________?
A. displacement diagram
B. velocity diagram
C. acceleration diagram
D. all of the above
E. none of the above
Stress concentration in cyclic loading is____________________?
Which is correct statement ?
A. very serious in brittle materials and less serious in ductile materials
B. very serious in ductile materials and less serious in brittle materials
C. equally serious in both types of materials
D. seriousness would depend on other factors
E. none of the above
The operation of straightening a curved sheet metal, is known as____________________?
A. squeezing
B. coining
C. planishing
D. drawing
On Mollier chart, flow through turbine is represented by ________________?
A. horizontal straight line
B. vertical straight line
C. straight inclined line
D. curved line
E. none of the above
