2000 N-m
2050 N-m
2100 N-m
2136 N-m
D. 2136 N-m
Pan Head
Snap head
Counter sunk head
Conical head
Woodruff key
Feather key
Flat saddle key
Gib head key
Tearing strength of plate (Pt)
Shearing strength of rivet (Ps)
Crushing strength of rivet (Pc)
Least value of Pt Ps and Pc
Pressure angle
Pitch circle diameter
Circular pitch
Diametral pitch
Ductile materials
Brittle materials
Elastic materials
All of the above
0.75/ (0.75 + √v)
3/ (3 + v)
4.5/ (4.5 + v)
6/ (6 + v)
Brittle materials
Ductile materials
Brittle as well as ductile materials
Elastic materials
Ring nut
Castle nut
Sawn nut
Jam nut
Heavy load
Loose belt
Driving pulley too small
Any one of the above
Uniform velocity
Simple harmonic motion
Uniform acceleration and retardation
Cycloidal motion
Acts when external load is applied
Becomes zero when external load is removed
Is independent of external loads
Is always harmful
Pitch circle to the top of a tooth
Pitch circle to the bottom of a tooth
Top of a tooth to the bottom of a tooth
Addendum circle to the clearance circle
Cast iron
Wrought iron
Mild steel
Aluminium
8
4
2
6
Handle of a hand pump
Hand wheel of a punching press
Lever of a loaded safety valve
A pair of tongs
40°
45°
38°
60°
5 N-m
7 N-m
10 N-m
15 N-m
Longitudinal stress
Circumferential stress
Shear stress
None of these
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
d
1.5 d
2d
2.5 d
A taper key which fits half in the key way of hub and half in the key way of shaft
A taper key which fits in a key way of the hub and is flat on the shaft
A taper key which fits in a key way of the hub and the bottom of the key is shaped to fit the curved surface of the shaft
Provided in pairs at right angles and each key is to withstand torsion in one direction only
Tolerance grade for the hole is 6 and for the shaft is 5
Tolerance grade for the shaft is 6 and for the hole is 5
Tolerance grade for the shaft is 4 to 8 and for the hole is 3 to 7
Tolerance grade for the hole is 4 to 8 and for the shaft is 3 to 7
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
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
Static load
Dynamic load
Static as well as dynamic load
Completely reversed load
2000-3000 kg/m²
3000-4000 kg/cm²
4000-4500 kg/cm²
7500-10,000 kg/cm²
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
Similar to small size tap bolts except that a greater variety of shapes of heads are available
Slotted for a screw driver and generally used with a nut
Used to prevent relative motion between parts
Provided with detachable caps
One-eighth
One-fourth
One-half
Double
Woodruff key
Feather key
Flat saddle key
Gib head key