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
C. Metric threads of 33 mm outside diameter and 2 mm pitch
0.1 and 0.25
0.25 and 0.50
0.50 and 0.75
0.75 and 1
Be independent of ratio of mass of load W to mass of bar (y)
Increase with increase in y
Decrease with decrease in y
Depend on other considerations
Reducing stress concentration
Ease of manufacture
Safety
Fullering and caulking
Elastic limit to the working stress
Elastic limit to the yield point
Endurance limit to the working stress
Young's modulus to the ultimate tensile strength
Acme threads
Square threads
Buttress threads
Multiple threads
Self locking bolts
Designed for shock load
Used in aircraft application
Provided with hexagonal depression in head
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
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
Same
Higher
Lower
None of these
Flaring
Brazing
Soft soldering
Fusion welding
Minor diameter
Major diameter
Pitch diameter
None of these
Low efficiency
High efficiency
High load lifting capacity
High mechanical advantage
The coefficient of friction between the belt and pulley decreases
The coefficient of friction between the belt and pulley increases
The power transmitted will decrease
The power transmitted will increase
Equating tearing resistance of the plate to the shearing resistance of the rivets
Equating tearing resistance of the plate to the crushing resistance of the rivets
Equating shearing resistance to the crushing resistance of the rivets
None of the above
Low carbon steel
High carbon steel
Medium carbon steel
High speed steel
ISO metric thread
Acme thread
Square thread
Buttress thread
Angular bevel gears
Mitre gears
Crown Bevel gears
Internal bevel gears
Equal to
Less than
Greater than
None of these
0.4 times
0.6 times
0.7 times
0.8 times
Provide cushioning effect
Provide bearing area
Absorb shocks and vibrations
Provide smooth surface in place of rough surface
Dynamic loading
Static loading
Combined static and dynamic loading
Completely reversed loading
0.70
0.25
0.40
0.55
Tearing strength of plate (Pt)
Shearing strength of rivet (Ps)
Crushing strength of rivet (Pc)
Least value of Pt Ps and Pc
Brittle materials
Ductile materials
Brittle as well as ductile materials
Elastic materials
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
4
6
8
10
40°
45°
38°
60°
Spur gearing
Helical gearing
Bevel gearing
Spiral gearing
Bending stress only
A combination of torsional shear stress and bending
Direct shear stress only
A combination of bending stress and direct shear stress
Brown colour
Yellow colour
White colour
Grey colour