Bushed pin type coupling
Universal coupling
Oldham coupling
All of these
D. All of these
Hexagonal nut
Slotted nut
Castle nut
Any one of the above
d.t.τu
πd.t.τu
π/4 × d².τu
π/4 × d² × t.τu
Loose in shaft and tight in hub
Tight in shaft and loose in hub
Tight in both shaft and hub
Loose in both shaft and hub
Butt weld
Fillet weld
Sleeve weld
Socket weld
Effective
Smallest
Largest
None of these
Spur gearing
Helical gearing
Bevel gearing
Spiral gearing
12
14
18
24
On both the sides
On one side only
On none of the sides
May be provided anywhere
Half
Same
Double
None of the above
Determining brittleness
Protecting metal against corrosion
Protecting metal against wear and tear
Experimental stress analysis
Same
Double
One-half
One-fourth
40
50
70
100
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
Right hand
Left hand
Both A and B
None of these
√(T/m)
√(T/2m)
√(T/3m)
None of these
Increases
Decreases
Remain same
None of these
Ring nut
Castle nut
Sawn nut
Jam nut
Parallel
Perpendicular
Both A and B
None of these
Have contact at the bottom most of the bearing
Move towards right of the bearing making no metal to metal contact
Move towards right of the bearing making the metal to metal contact
Move towards left of the bearing making metal to metal contact
Maximum at the outer surface and minimum at the inner surface
Maximum at the inner surface and minimum at the outer surface
Maximum at the inner surface and zero at the outer surface
Maximum at the outer surface and zero at the inner surface
Belts are available in sets
Only one belt cannot be fitted with other used belts
The new belt will carry more than its share and result in short life
New and old belts will cause vibrations
Butt joint with single cover plate
Butt joint with double cover plate
Lap joint with one ring overlapping the other
Any one of the above
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
Longitudinal stress
Hoop stress
Longitudinal and hoop stress
None of these
Nil or lightest
Maximum
Average
Any one of the above
T₁ - T₂ + Tc
T₁ + T₂ + Tc
(T₁ - T₂ + Tc)/2
(T₁ + T₂ + Tc)/2
Elastic strength
Yield strength
Brinell hardness number
Toughness
Has a head on one end and a nut fitted to the other
Has head at one end and other end fits into a tapped hole in the other part to be joined
Has both the ends threaded
Has pointed threads
Eutectoid steel
Hypereutectoid steel
Hypo-eutectoid steel
None of these
There is a thick film of lubricant between the journal and the bearing
There is a thin film of lubricant between the journal and the bearing
The lubricant is forced between the journal and the bearing, by external pressure
There is no lubricant between the journal and the bearing