A. contains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron
B. is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable
C. is produced by annealing process. It is soft, tough and easily machined metal
D. is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material
E. none of the above
Mechanical Engineering Mcqs
If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be_______________?
A. less
B. more
C. same
D. data are insufficient to determine same
E. none of the above
In isochronous governing, speed droop is_______________?
A. 100%
B. 50%
C. 5%
C. 30%
E. 1%.
Which of the following materials is most elastic_________________?
A. rubber
B. plastic
C. brass
D. steel
E. glass
Which of the following is not the unit of power ?
A. kW (kilowatt)
B. hp (horse power)
C. kcal/sec
D. kg m/sec
E. kcal/kg sec
Carnot cycle efficiency depends upon________________?
A. properties of the medium/substance used
B. condition of engine
C. working condition
D. temperature range of operation
E. effectiveness of insulating material around the engine
Which of the following is not an interns combustion engine___________________?
A. 2-stroke petrol engine
B. 4-stroke petrol engine
C. diesel engine
D. gas turbine
E. steam turbine
Barometric pressure is equal to_____________________?
A. 760 mm Hg
B. zero mm Hg
C. 735.6 mm Hg
D. 1 mm Hg
E. 100mm Hg
A diesel engine as compared to petrol engine (both running ar rated load) is ____________________?
A. more efficient
B. less efficient
C. equally efficient
D. unperdictable
E. other factors will decide it
Which of the following layouts is suited to job production__________________?
A. process layout
B. product layout
C. fixed position layout
D. plant layout
E. functional layout
