A swinging pendulum in its mid-position possesses
A.only the potential energy
B.only the kinetic energy
C.more kinetic energy and less potential energy
D.None of the above
Category: Theory of Machines Mcqs
A reverted gear train is one is which
A.The direction of rotation of first and last gear is the same
B.The firection of rotation of first and the last gear is opposite
C.The first and last gear are on the same shaft
D.The first and last gear are essentially on separate but parallel shafts
E.None of the above
The difference between a machine and a structure is
A.The machine serves to modify and transmit forces only whereas structures serve to modify and transmit mechanical work
B.The machine serves to modify and transmit mechanical work whereas structures serve to modify and transmit forces only
C.The relative motion exists between the parts of a structures whereas it does not exist in machines
D.Structures are temporary constructions whereas machines are paramanent
E.None of the above
A kinematic chain becomes a mechanism when
A.First link is fixed
B.Any one link is fixed
C.All link are fixed
D.None of the links are fixed
E.There is no such criterion
For a rational number for the pitch circle diameter and a rational number of teeth on the wheel, the circular pitch will work out to
A.An odd number
B.An even number
C.A rational number
D.An irrational number
E.None of the above
In a slider crank mechanism for l/r ratio of 4 the percentage of stroke converted by piston corresponding to 90? movement of crank from top centre will be
A.0 percent
B.Less than 50%
C.More than 50%
D.100%
E.None of the above
For fluctuating loads, the appropriate bearing would be
A.Bush bearing
B.Ball bearing
C.Ball bearing with sleeve
D.Roller bearing
E.Needle roller bearing
Which one of the following is not applicable to involute profile
A.The shape of the involute profile is dependent only on the dimensions of the base circle
B.The angular velocity ratio when tow involutes are in mesh, is inversely proportional to the size of the base circles
C.No involute has a pressure angle until it is brought in contact with other mating involute
D.Involute is the only tooth form that is not sensitive to centre distance of their base circles
E.The pitch diameters of mating involutes are inversely proportional to their base circle diameters
The prime circle of a cam is
A.The smallest circle drawn to the pitch curve from the centre of rotation of curve
B.The smallest circle drawn to the cam profile from the centre of rotation of a radial cam
C.The circle with centre as the centre of cam axis and radius such that it passes through the pitch point
D.The circle fitting in cam profile
E.None of the above
If there are L number of links in a mechanism, then the number of possible inversions would be
A.L
B.L/2
C.(L + 1)
D.(L + 2)
E.(L + 3)
