Elastic strength
Yield strength
Brinell hardness number
Toughness
C. Brinell hardness number
Crown bevel gears
Angular bevel gears
Mitre gears
Internal bevel gears
Welding
Pre-casting
Riveting
Casting
Same
Higher
Lower
None of these
Zero
Less than one
Greater than one
None of these
45°
60°
75°
90°
Tensile stress
Bending stress
Bearing stress
Shear stress
A key is used as a temporary fastening
A key is subjected to tensile stresses
A key is always inserted parallel to the axis of the shaft
A key prevents relative motion between the shaft and boss of the pulley
Margin
Pitch
Back pitch
Diagonal pitch
0.45
0.55
0.65
0.75
Tensile stress
Compressive stress
Direct shear stress
Torsional shear stress
Self locking bolts
Designed for shock load
Used in aircraft application
Provided with hexagonal depression in head
Butt joint with single cover plate
Butt joint with double cover plate
Lap joint with one ring overlapping the other
Any one of the above
Tearing strength of plate (Pt)
Shearing strength of rivet (Ps)
Crushing strength of rivet (Pc)
Least value of Pt Ps and Pc
Which are not in exact alignment
Which are perfectly aligned
Whose axes intersect at a small angle
Have lateral misalignment
(6V/ π)1/2
(6V/ π)1/3
(6V/ π)2
(6V/ π)3
Minor diameter
Major diameter
Pitch diameter
None of these
Increases markedly
Decreases markedly
Remain same
Depends on heat treatment carried out
T₁/T₂ = μθ
log (T₁/T₂) = μθ
T₁/T₂ =eμθ
T₁/T₂ = log μθ
Less than
Equal to
More than
None of these
Effective tension is equal to centrifugal tension
Effective tension is half of centrifugal tension
Driving tension on slack side is equal to centrifugal tension
Driving tension on tight side is twice the centrifugal tension
Axial load plus stress due to bending
Acceleration/retardation of masses plus stress due to bending
Axial load plus stress due to acceleration/retardation
Bending plus stress due to acceleration/retardation
10° to 15°
15° to 20°
20° to 35°
35° to 50°
Addendum circle
Dedendum circle
Pitch circle
Clearance circle
Normalising
Full annealing
Process annealing
Spheroidising
1 kN-m
2 kN-m
3 kN-m
4 kN-m
Right hand
Left hand
Both A and B
None of these
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
One small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
A slot is cut partly in middle of nut and then slot reduced by tightening a screw
Hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed on the bolt causing a tight grip
Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction at other end
5 mm
10 mm
15 mm
25 mm
Does not change
Increases
Decreases
None of the Above