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
B. A member made of cast iron will generally be more rigid than a member of equal load carrying ability made of steel
5 mm
10 mm
15 mm
25 mm
Tempering
Normalising
Annealing
Spheroidising
Hollow saddle key
Hollow key
Soft key
None of these
Bolted joint
Knuckle joint
Cotter joint
Universal joint
Shear stress in each spring will be equal
Load taken by each spring will be half the total load
Only A is correct
Both A and B is correct
Neutral surface
Upper surface
Lower surface
None of these
p.d.σt
p.t.σt
(p - d) σt
(p - d) t.σt
Bushed pin type coupling
Universal coupling
Oldham coupling
All of these
Metric threads of 33 numbers in 2 cm
Metric threads with cross-section of 33 mm
Metric threads of 33 mm outside diameter and 2 mm pitch
Bolt of 33 mm nominal diameter having 2 threads per cm
Same
Double
One-half
One-fourth
Initial tension
External load applied
Relative elastic yielding (springness) of the bolt and the connected member
All of the above
Constant period
Fixed period
Dwell period
Idle period
(π/4) d² × τ × n
1.875 × (π/4) d² × τ × n
2 × (π/4) d² × τ × n
3 × (π/4) d² × τ × n
Pitch circle diameter × cosφ
Addendum circle diameter × cosφ
Clearance circle diameter × cosφ
Pitch circle diameter × sinφ
Direct tensile stress
Direct compressive stress
Direct bending stress
Direct shear stress
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
Acme threads
Square threads
Buttress threads
Multiple threads
√(Pmax / 2m)
√(Pmax / 3m)
√(Pmax / m)
√(3m /Pmax) Where m = mass of belt per metre (kg/m) Pmax = maximum permissible tension in belt (N)
Knife edge follower
Flat faced follower
Spherical faced follower
Roller follower
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
εc + 2εl
2εc + εl
εc + εl²
εc² + εl
Pulley is made the weakest
Key is made the weakest
Key is made the strongest
All the three are designed for equal strength
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
Same
Higher
Lower
Depends on other factors
σ [1 + (b/2a)]
σ [1 + (2a/b)]
σ [1 + (b/3a)]
σ [1 + (3a/b)]
Brittle materials
Ductile materials
Elastic materials
Plastic materials
1 in 5
1 in 10
1 in 24
1 in 40
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
Normal pitch
Axial pitch
Diametral pitch
Module
Brinell
Rockwell
Vickers
None of the above