Pan Head
Snap head
Counter sunk head
Conical head
B. Snap head
Tip of the pinion and flank of gear
Tip of the gear and flank of pinion
Flanks of both gear and pinion
Tip of both gear and pinion
Shaft B is better than shaft A
Shaft A is better than shaft B
Both the shafts are equally good
None of these
Friction angle is less than helix angle
Friction angle is more than helix angle
Friction angle is equal to helix angle
Efficiency of screw is 100%
1.2 d
1.6 d
2d
2.5 d
Square threads
Multiple threads
Acme threads
Buttress threads
More than 50 %
Less than 50 %
Equal to 50 %
None of these
6 m
5 m
7 m
All of these
Combined effect of transverse shear stress and bending stress in the wire
Combined effect of bending stress and curvature of the wire
Combined effect of transverse shear stress and curvature of wire
Combined effect of torsional shear stress and transverse shear stress in the wire
Plasticity
Elasticity
Ductility
Malleability
The stress concentration in static loading is more serious in ductile materials and less serious in brittle materials
The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials
The toughness of a material increases when it is heated
The shear stress in a beam varies from zero at the neutral surface and maximum at the outer fibres
Bushed pin type coupling
Universal coupling
Oldham coupling
All of these
Thread
Middle
Shank
Head
Pt /P
Ps /P
Pc /P
Least of Pt, Ps and Pc/P
Sleeve bearings
Hydrodynamic bearings
Thin lubricated bearings
None of the above
Zero film bearing
Boundary lubricated bearing
Hydrodynamic lubricated bearing
Hydrostatic lubricated bearing
0.01 micron
0.1 micron
1 micron
10 microns
0.5 times
Equal to
2 times
Double
Is less flexible
Has a much smaller load carrying capacity
Does not provide much warning before failure
Provides much greater time for remedial action before failure
Equal to
Less than
Greater than
None of these
Static load
Dynamic load
Static as well as dynamic load
Completely reversed load
Both sides of the actual size
One side of the actual size
One side of the nominal size
Both sides of the nominal size
0.96
0.97
0.98
0.99
Gd⁴/ 8D3n
Gd3/ 8D3n
Gd⁴/ 4D3n
Gd⁴/ 8D²n
Brittle
Ductile
Elastic
Plastic
Provide cooling action
Lubricate the dies
Help removes chips
All of the above
Equal to
Less than
Greater than
None of these
Elasticity
Endurance
Strength
Toughness
Increases the seriousness of static loading stress concentration
Lessens the seriousness of static loading stress concentration
Has no effect on it
Depends on other considerations
Master leaf
Lower leaf
Upper leaf
None of these
Knife edge follower
Flat faced follower
Spherical faced follower
Roller follower