The pitch of rivets is obtained by equating the tearing resistance of the plate to the shearing resistance of the rivets
The pitch of rivets should not be less than 2d, where d is the diameter of rivet hole
The maximum value of the pitch of rivets for a longitudinal joint of a boiler, as per I.B.R., is given by Pmax = C.t + 41.28 mm
According to I.B.R., the thickness of butt strap shall not be less than 5 mm
D. According to I.B.R., the thickness of butt strap shall not be less than 5 mm
1/sinθ
1/cosθ
1/tanθ
sinθ cosθ
Load is in between the fulcrum and effort
Effort is in between the fulcrum and load
Fulcrum is in between the load and effort
None of these
A parallel sunk key is a taperless key
A parallel sunk key may be rectangular or square in cross-section
A flat saddle key is a taper key which fits in a key way of the hub and is flat on the shaft
All of the above
Cold working
Shot peening
Surface decarburisation
Under stressing
It is subjected to a higher cyclic loading than the outer side
It is subjected to a higher stress than the outer side
It is more stretched than the outer side during the manufacturing process
It has a lower curvature than the outer side
Thickness of plates to be riveted
Length of rivet
Diameter of head
Nominal diameter
Mild steel
High speed steel
Stainless steel
Aluminium
(6V/ π)1/2
(6V/ π)1/3
(6V/ π)2
(6V/ π)3
Angular bevel gears
Crown bevel gears
Internal bevel gears
Mitre gears
Regain its original shape after deformation when the external forces are removed
Draw into wires by the application of a tensile force
Resist fracture due to high impact loads
Retain deformation produced under load permanently
Transmission
Machine
Machine frame
None of these
Half
Same
Double
None of the above
Low efficiency
High efficiency
High load lifting capacity
High mechanical advantage
Basic size is 100 mm
Actual size is 100 mm
Difference between the actual size and basic size is 100 mm
None of the above
Half the angle between two inclined faces in axial plane
The angle between the tangent to the pitch helix and the plane of rotation
The angle between the tangent to the pitch helix and an element of the cylinder
None of the above
The pitch of the thread is 24 mm and depth is 2 mm
Cross-sectional area of the threads is 24 mm²
The nominal diameter of bolt is 24 mm and pitch is 2 mm
The effective diameter of bolt is 24 mm and there are 2 threads per cm
Maximum at the outer surface and minimum at the inner surface
Maximum at the inner surface and minimum at the outer surface
Maximum at the inner surface and zero at the outer surface
Maximum at the outer surface and zero at the inner surface
Both the ends fixed
Both the ends hinged
One end fixed and the other end hinged
One end fixed and the other end free
Joint may not open up
Bolts are weakest elements
The resultant load on the bolt would not be affected by the external cyclic load
Bolts will not loosen during service
Effective length of column to least radius of gyration of the column
Width of column to depth of column
Maximum size of column to minimum size of column
Effective length of column to width of column
Material and geometry of the part
Geometry of the part
Material of the part
None of these
Varies linearly
Is uniform throughout
Varies exponentially, being more at the torque-input end
Varies exponentially, being less at the torque-input end
10 times
5 times
15 times
20 times
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
Straining
Fatigue
Creep
Sudden loading
3.6 N/mm² compression
3.6 N/mm² tension
7.2 N/mm² compression
7.2 N/mm² tension
Both ends hinged
Both ends fixed
One end fixed and the other end hinged
One end fixed and the other end free
Bolts
Keys
Cotters
Rivets
Knuckle joint
Cotter joint
Oldham coupling
Universal joint
Very fine threads
High efficiency
Low efficiency
Strong teeth