6८९५५
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ليك ‎॥(६,+‏ - يديم

Correct Answer: 8

Question64:-Poisson's ratio and modulus of elasticity of a material is given as 0.2 and 80 GPa respectively What will be the value of bulk modulus and modulus of rigidity of the
material?

‘8-50.28 GPa, 22.32 GPa
B:-70.25 GPa, 50.84 GPa
‏مم می‎ GPa, 33.33 GPa
60.25 GPa, 40.83 GPa
Correct Answer: Option-C
Question65:-For an involute gear teeth
‘AConvex flank contact with a concave face
Bs-Two convex surfaces are in contact
(7೦ concave surfaces are in contact
D-None of the above
Correct Answer: Option ®
Question66:-The number of teeth of a spur gear is 40 and it rotates at 100 rpm. What will be its pitch line velocity if it has a module of 2.5 mm ?
‏334ھ‎ mimin
B:-6.28 mimin
೦-3೩4 mimin
62.8 mimin
Correct Answer: Option-C
Question67::Which type of gear mostly used for the drive to the differential of an automobile ?
‘AcSpiral bevel gear
B:-Epicyclic gear
C-Zerol bevel gear
D-Straight bevel gear
Correct Answer:- ೦೧000
Question68:-To reduce pressure on the bearings and to increase power transmission, the pressure angle of the gear must be kept ?
Small
B-Large
C:Equal to angle of action
D-Equal to angle of obliquity
Correct Answer:- ೦೧000
Question69:-Axial thrust is a disadvantage for
‘AcSpur gear
B:-Herringbone gear
C:Double-helical gear
D:-Helical gear
Correct Answer:- Option-D
Question70:-Method to reduce interference in gears
‘Ac Using more teeth on the gears
B:-Use larger pressure angle
೦-೦೬ gears with shorter teeth
०-५॥ of the above
Correct Answer:- Option-D
Question71:-A string stretched between two supports has
‘A:Single degree of freedom

Br-Infinite degrees of freedom