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.Management Sciences
Category: Mechanical Engineering Mcqs
A cold chisel is made of_______________?
A. mild steel
B. cast iron
C. H.S.S.
D. high carbon
E. german silver
Freon group of refrigerants are___________________?
A. inflammable
D. toxic
C. non-inflammable and toxic
D. non-toxic and inflammable
E. non-toxic and non-inflammable
Which is the false statement about the properties of instantaneous center____________________?
A. at the instantaneous center of rotation, one rigid link rotates instantaneously relative to another for the configuration of mechanism considered
B. the two rigid links have no linear velocities relative to each other at the instantaneous centre
C. the two rigid links which have no linear velocity relative to each other at this center have the same linear velocity to the third rigid link
D. the double centre can be denoted either by 02 or Ol2, but proper selection should be made
E. none of the above
Basic hole is one_________________?
A. whose upper deviation is zero
B. whose lower deviation is zero
C. whose lower as well as upper deviations are zero
D. does not exist
E. none of the above
In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is_________________?
A. more
B. less
C. same
D. more/less depending on composition
E. may have any value
In a recuperative air preheater, the heat is transferred____________________?
A. from a metal wall from one medium to another
B. from heating an itermediate material and then heating the air from this material
C. by direct mixing ,
D. heat is transferred by bleeding some gases from furnace
E. none of the above
According to Recardo’s theory, detonation occurs due to______________________?
A. instantaneous auto-ignition of last part of charge to be burnt
B. improper mixing of air and fuel
C. improper combustion
D. self ignition temperature has nothing to do with detonation
E. none of the above
Travel charts provide__________________?
A. an idea of the flow of materials at various stages
B. a compact estimate of the handling which must be done between various work sections
C. the information for changes required in rearranging material handling equipment
D. an approximate estimate of the handling which must be done at a particular station
E. solution to handling techniques to achieve most optimum^ results
The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as ________________?
A. emissivity
B. transmissivity
C. reflectivity
D. intensity of radiation
E. absorptivity
Surface energy per unit area of a surface is numerically equal to _____________________?
A. atmospheric pressure
B. surface tension
C. force of adhesion
D. force of cohesion
E. viscosity
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