p.d.σt
p.t.σt
(p - d) σt
(p - d) t.σt
D. (p - d) t.σt
Ring nut
Castle nut
Sawn nut
Jam nut
Low efficiency
High efficiency
Very fine threads
Strong teeth
Is just sufficient to hold parts together
Approaches yield point
Is 50% of yield point
Is about yield point divided by safety factor
Bushed pin type coupling
Universal coupling
Oldham coupling
All of these
Tensile stress
Bending stress
Bearing stress
Shear stress
A member made of steel will generally be more rigid than a member of equal load carrying ability made of cast iron
A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel
Both will be equally rigid
Which one is rigid will depend on several other factors
Static load
Dynamic load
Impact load
Completely reversed load
Guest's theory
Rankine's theory
St Venant's theory
Von Mises theory
Right hand with same pitch
Left hand with same pitch
Could be left or right hand
Right hand with fine pitch
Bondability
Embeddability
Comformability
Fatigue strength
Repeated stress
Yield stress
Fluctuating stress
Alternating stress
Gib of cotter joint
Sleeve and cotter joint
Spigot socket cotter joint
Knuckle joint
p = D sin (90°/T)
p = D sin (120°/T)
p = D sin (180°/T)
p = D sin (360°/T)
Increases
Decreases
Remains unchanged
None of these
Prevent the belt from running off the pulley
Increase the power transmission capacity
Increase the belt velocity
Prevent the belt joint from damaging the belt surface
Margin
Pitch
Back pitch
Diagonal pitch
They are cheap
They can work at high temperature
They are unaffected by moisture and humidity
None of the above
Plastic materials
Brittle materials
Non-ferrous materials
Ductile materials
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
3 mm
5 mm
10 mm
20 mm
Equal to
Less than
Greater than
None of these
Bevel gearing
Helical gearing
Worm gearing
None of these
The connecting rod will be equally strong in buckling about X-axis and Y-axis, if Ixx = 4 Iyy
If Ixx > 4 Iyy, the buckling will occur about Y-axis
If Ixx < 4 Iyy, the buckling will occur about X-axis
The most suitable section for the connecting rod is T-section
Determining brittleness
Protecting metal against corrosion
Protecting metal against wear and tear
Experimental stress analysis
Screw cutting lathes
Feed mechanisms
Spindles of bench vices
Railway carriage couplings
Right hand threads on bout ends
Left hand threads on both ends
Left hand threads on one end and right hand threads on other end
No threads
Static load
Dynamic load
Static as well as dynamic load
Completely reversed load
Power transmitted increases
Power transmitted decreases
Power transmitted increases to a maximum value and then decreases
Power transmitted remains the same
Directly proportional to the polar moment of inertia and to the distance of the point from the axis
Directly proportional to the applied torque and inversely proportional to the polar moment of inertia
Directly proportional to the applied torque and the polar moment of inertia
Inversely proportional to the applied torque and the polar moment of inertia
Combined loading
Fatigue
Thermal stresses
Shock loading