Strong in buckling about X-axis
Strong in buckling about Y-axis
Equally strong in buckling about X-axis and Y-axis
Any one of the above
C. Equally strong in buckling about X-axis and Y-axis
Shafts are arranged parallel and rotate in the opposite directions
Shafts are arranged parallel and rotate in the same directions
Shafts are arranged at right angles and rotate in one definite direction
Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft
Equal to
Less than
Greater than
None of these
2d
3d
4d
5d
Hot piercing
Extrusion
Cold peening
Cold heading
Equal to
Less than
Greater than
None of these
1
2
3
4
Tearing strength of plate (Pt)
Shearing strength of rivet (Ps)
Crushing strength of rivet (Pc)
Least value of Pt Ps and Pc
Variation in properties of material from point to point in a member
Pitting at points or areas at which loads on a member are applied
Abrupt change of section
All of the above
3.6 N/mm² compression
3.6 N/mm² tension
7.2 N/mm² compression
7.2 N/mm² tension
Addendum circle
Dedendum circle
Pitch circle
Clearance circle
Heavy load
Loose belt
Driving pulley too small
All of the above
To reduce friction
To facilitate slipping of balls
To prevent the lubricant from flowing out
To maintain the balls at a fixed distance apart
εc + 2εl
2εc + εl
εc + εl²
εc² + εl
Tensile stress
Bending stress
Bearing stress
Shear stress
Copper
Mild steel
Aluminium
Zinc
Provide cooling action
Lubricate the dies
Help removes chips
All of the above
When the maximum shear stress in a biaxial stress system reaches the shear stress at elastic limit in a simple tension test
When the maximum principal stress in a biaxial stress system reaches the elastic limit of the material in a simple tension test
When the strain energy per unit volume in a biaxial stress system reaches the strain energy at the elastic limit per unit volume as determined from a simple tension test
When the maximum principal strain in a biaxial stress system reaches the strain at the elastic limit as determined from a simple tension test
Material and geometry of the part
Geometry of the part
Material of the part
None of these
Handle of a hand pump
Hand wheel of a punching press
Lever of a loaded safety valve
A pair of tongs
Metric
Buttress
Square
NPT (national pipe threads)
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%
0.96
0.97
0.98
0.99
Self locking bolt
Same as stud
Provided with hexagonal depression in head
Used in high speed components
Measure forces
Apply forces
Store energy
All of these
Yes
No
Sometimes
Rarely
Always in single shear
Always in double shear
Either in single shear or double shear
Any one of these
Increases the fatigue strength
Decreases the fatigue strength
Has no influence on fatigue strength
Alone has no influence on fatigue strength
Prevent the rotation of load being lifted
Enhance the load carrying capacity of the jack
Reduce the effort needed for lifting the working load
Reduce the value of frictional torque
Cold working
Shot peening
Grinding and lapping surface
Hot working
10 times
5 times
15 times
20 times