10 m/s
12.5 m/s
15 m/s
20 m/s
D. 20 m/s
45°
60°
75°
90°
120°
180°
270°
360°
F/bh
3F/2bh
2F/bh
4F/bh
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
Axially upwards
Axially downwards
Axially upwards or downwards
None of these
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
Heavy load
Loose belt
Driving pulley too small
All of the above
10 times
5 times
15 times
20 times
Diameter of both the shafts is same
Angle of twist of both the shafts is same
Material of both the shafts is same
Twisting moment of both the shafts is same
29°
55°
47.3°
60°
Nickel
Chromium
Nickel and chromium
Cobalt and molybdenum
Butt weld
Fillet weld
Sleeve weld
Socket weld
Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt
Keeping the core diameter smaller than the diameter of the unthreaded portion
Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt
None of the above
Same
Coarser
Finer
Very fine
Shoe brake
Band and block brake
Band brake
Internal expanding brake
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
Material of belt and pulley
Slip of belt
Speed of belt
All of these
Bottom side of belt as slack side
Top side of belt as slack side
Idler pulley
None of the above
εc + 2εl
2εc + εl
εc + εl²
εc² + εl
5 N-m
7 N-m
10 N-m
15 N-m
Brittle materials
Ductile materials
Elastic materials
Plastic materials
Surface of the top of the tooth
Surface of the tooth above the pitch surface
Width of the tooth measured along the pitch circle
Surface of the tooth below the pitch surface
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
The Oil film pressure is generated only by the rotation of the journal
The oil film is maintained by supplying oil under pressure
Do not require external supply of lubricant
Grease is used for lubrication
Bending moment only
Twisting moment only
Combined bending moment and twisting moments
Combined action of bending moment, twisting moment and axial thrust
30°
45°
60°
80°
Very serious in brittle materials and less serious in ductile materials
Very serious in ductile materials and less serious in brittle materials
Equally serious in both types of materials
Seriousness would depend on other factors
1.2 d
1.6 d
2d
2.5 d
Joining thick cylinders
Calculating stresses in thick cylinders
Pre-stressing thick cylinders
Increasing the life of thick cylinders
Both the ends fixed
Both the ends hinged
One end fixed and the other end hinged
One end fixed and the other end free