Q.1
The shear modulus of resilience is proportional to
Q.2
For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle)
Q.3
Set screws are
Q.4
A key capable of tilting in a recess milled out in a shaft is known as
Q.5
A special case of ductility which permits materials to be rolled or hammered into thin sheets, is called
Q.6
Stress concentration in static loading is more serious in
Q.7
In static loading, stress concentration is more serious in
Q.8
In cyclic loading, stress concentration is more serious in
Q.9
In a journal bearing, the load on the bearing is __________ to the axis of the journal.
Q.10
Which is positive drive?
Q.11
According to maximum normal stress theory, the maximum normal stress in the shaft is
Q.12
When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be
Q.13
When a beam of rectangular cross-section of width b and depth d, is subjected to a shear force F, the maximum shear stress induced will be
Q.14
The wire ropes make contact at
Q.15
Stress concentration in cyclic loading is more serious in
Q.16
The maximum bending stress in a curved beam having symmetrical section always occur at the
Q.17
The toughness of a material _________ when it is heated
Q.18
The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to
Q.19
Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to
Q.20
In skew bevel gearing, the axes of shafts are
Q.21
The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be
Q.22
A tube has the following advantage over pipe
Q.23
The included angle for the V-belt is usually
Q.24
The rivet head used for boiler plate riveting is usually
Q.25
The ball bearings are provided with a cage
Q.26
If p = bearing pressure on projected bearing area, z = absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by
Q.27
The suitable material for belt in agricultural machinery is
Q.28
Which process will increase the fatigue duration of parts?
Q.29
Coaxing is the procedure of increasing
Q.30
Rankine's theory of failure is applicable for following type of materials
Q.31
The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to 6/(6 + v).
Q.32
In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.
Q.33
Lewis equation is applied
Q.34
In a hydrodynamic lubricated bearing
Q.35
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)
Q.36
Idler pulley is used for
Q.37
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (neglecting centrifugal tension) will be equal to (Where, Pc is centrifugal tension)
Q.38
Turn buckle has
Q.39
The angle of twist of shaft is
Q.40
Guest's theory of failure is applicable for following type of materials
Q.41
What is the answer to this question?
Q.42
A leaf spring in automobiles is used
Q.43
The fatigue stress concentration factor is defined as
Q.44
If b denotes the face width and L denotes the cone distance for a bevel gear, then the bevel factor is written as
Q.45
The ratio of the ultimate stress to the design stress is known as
Q.46
The property of a bearing material which has the ability to accommodate shaft deflections and bearing inaccuracies by plastic deformation without excessive wear and heating, is known as
Q.47
A key made from a cylindrical disc having segmental cross-section, is known as
Q.48
Antifriction bearings are
Q.49
The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress concentration factor Kt as
Q.50
The included angle in unified of American National threads is
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