Guest's theory
Rankine's theory
St Venant's theory
Von Mises theory
B. Rankine's theory
Acme threads
Square threads
Buttress threads
Multiple threads
2000 N-m
2050 N-m
2100 N-m
2136 N-m
Low carbon steel
High carbon steel
Medium carbon steel
High speed steel
340 to 360
420 to 450
More than 400
300 to 320
Provide cooling action
Lubricate the dies
Help removes chips
All of the above
Minor diameter
Major diameter
Pitch diameter
None of these
Thread
Middle
Shank
Head
One small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
A slot is cut partly in middle of nut and then slot reduced by tightening a screw
Hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed on the bolt causing a tight grip
Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction at other end
Hexagonal nut
Slotted nut
Castle nut
Any one of the above
An axial compressive force
A tangential force
An axial tensile force
Any one of these
Are lighter in weight
Offer silent operation
Can withstand shock loads
All of these
Initial tension
External load applied
Relative elastic yielding (springness) of the bolt and the connected member
All of the above
In a direction parallel to the cam axis
In a direction perpendicular to the cam axis
In any direction irrespective of cam axis
Along the cam axis
σ [1 + (b/2a)]
σ [1 + (2a/b)]
σ [1 + (b/3a)]
σ [1 + (3a/b)]
Base circle
Pitch circle
Addendum circle
Dedendum circle
(k₁ k₂)/ (k₁ + k₂)
(k₁ - k₂)/ (k₁ + k₂)
(k₁ + k₂)/ (k₁ k₂)
(k₁ - k₂)/ (k₁ k₂)
The tension in tight side is twice the centrifugal tension
The tension in slack side is equal to the centrifugal tension
The tension in tight side is thrice the centrifugal tension
None of the above
Increases
Decreases
Remains constant
None of these
Knuckle joint
Cotter joint
Oldham coupling
Universal joint
(WD/ πd3) × K
(2WD/ πd3) × K
(4WD/ πd3) × K
(8WD/ πd3) × K
In decreasing the slip of the belt
In increasing the slip of the belt
To keep the belt in centre on a pulley while it is in motion
To increase pulley life
Is directly proportional to
Is inversely proportional to
Is equal to cos φ multiplied by
Does not depend upon
Woodruff key
Feather key
Flat saddle key
Hollow saddle key
Shaft B is better than shaft A
Shaft A is better than shaft B
Both the shafts are equally good
None of these
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
Pressure angle
Pitch circle diameter
Circular pitch
Diametral pitch
10 m/s
12.5 m/s
15 m/s
20 m/s
Have same value as that of standard specimen
Increase
Decrease
None of these
Same
Higher
Lower
None of these
Tensile stress
Compressive stress
Shear stress
None of these