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.Management Sciences
Category: Mechanical Engineering Mcqs
On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by_______________?
A. horizontal straight line
B. vertical straight line
C. straight inclined line
D. curved line
E. none of the above
If a number of forces act simultaneously on a particle, it is possible _____________________?
A. not a replace them by a single force
B. to replace them by a single force
C. to replace them by a single force through C.G.
D. to replace them by a couple
E. to replace them by a couple and a force
The ratio of indicated thermal efficiency to the corresponding air standard cycle efficiency is called__________________?
A. net efficiency
B. efficiency ratio
C. relative efficiency
D. overall efficiency
E. cycle efficiency
The C.G. of a plane lamina will not be at its geometrical centre in the case of a __________________?
A. right angled triangle
B. equilateral triangle
C. square
D. circle
E. rectangle
Crankcase explosion in I.C. engines usuall occurs as ___________________?
A. first a mild explosion followed by a bi explosion
B. first a big explosion followed by a mil explosion
C. both mild and big explosions occi simultaneously
D. never occurs
E. unpredictable
The algebraic sum of moments of the forces forming couple about any point in their plane is__________________?
A. equal to the moment of the couple
B. constant
C. both of above are correct
D. both of above are wrong
E. none of the above
Pour point of fuel oil is the____________________?
A. lowest temperature at which oil will flow under set condition
B. storage temperature
C. temperature at which fuel is pumped through burners
D. temperature at which oil is transported
E. none of the above
Which of the following gases has the highest calorific value ________________?
A. producer gas
B. coal gas
C. water gas
D. blast furnace gas
E. coke oven gas
The unit of radio-activity is_____________?
A. electron-volt
B. electron-ampere
C. curie
D. MeV
E. AMU
Natural uranium is made up of__________________?
A. 99.282% U238, 0.712% U235, 0.006% U234
B. 99.282% U235, 0.712% U238, 0.06%’ U234
C. 99.282% U234, 0.712% U238, 0.006% U235
D. 99.282% U235, 0.712% U234, 0.006% U238
E. none of the above
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