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.Management Sciences
Category: Mechanical Engineering Mcqs
The basic requirement of a good combustion chamber is___________________?
A. high compression ratio
B. low compression ratio
C. low volumetric efficiency
D. minimum turbulence
E. high power output and high thermal efficiency
Which of the following is the binding material in cemented carbides___________________?
A. cobalt
B. nickel
C. vanadium
D. iron
E. carbon
Mechanical equivalent of heat for 1 kcal or Joule’s equivalent is equal to_________________?
A. 421 kgm
B. 421 kgm
C. 539 kgm
D. 102 kgm
E. 75 kgm
Which is not identical for an atom and an isotope_________________?
A. mass number
B. atomic number
C. chemical properties
D. position in periodic table
E. all of the above
Which is false statement about annealing. Annealing is done to________________?
A. relieve stresses
B. harden steel slightly
C. improve machining characteristic
D. soften material
E. permit further cold working
The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit_______________?
A. temperature
B. thickness
C. area
D. time
E. area and time
The example of lower pair is_______________?
A. shaft revolving in a bearing
B. straight line motion mechanisms
C. automobile steering gear
D. all of the above
E. none of the above
A bolt___________________?
A. has a head on one end and a nut fitted to the other
B. has head at one end and other end fits into a tapped hole in the other part to be joined
C. has both the ends threaded
D. is provided with pointed threads
E. requires no nut
The speed of sound in a ideal gas varies directly as its__________________?
A. pressure
B. temperature
C. density
D. modulus of elasticity
E. absolute temperature
The volumetirc efficiency of a compressor is calculated on the basis of __________________?
A. volume of air inhaled at working conditions
B. volume of air inhaled at N.T.P. conditions
C. volume at 0°C and 1 kg/cm2
D. volume at 20°C and 1 kg/cm2
E. none of the above
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