Bree tae
न 7

لك برعاي يليم

Correct Answer: Option ®

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
೦44.44 089, 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
ಆ convex surfaces are in contact
C-Two 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 ۸۳
B:-6.28 mimin
೦-3೩4 ೧/೫0
62.8 mimin
Correct Answer:- Option-C
‘Question67::Which type of gear mostly used for the drive to the differential of an automobile ?
‘A-Spiral bevel gear
B:-Epicyclic gear
C-Zerol bevel gear
D-Straight bevel gear
Correct Answer:- Option-é
Question68:-To reduce pressure on the bearings and to increase power transmission, the pressure angle of the gear must be kept 7
കന്തി
യം
८-हव०३ ६० करवा 1
DEqual to angle of obliquity
Correct Answer:- Option-é
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
C-Use gears with shorter teeth
D-All 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