X-axis as neutral axis
Y-axis as neutral axis
X-axis or Y-axis as neutral axis
Z-axis
C. X-axis or Y-axis as neutral axis
Crown bevel gears
Angular bevel gears
Mitre gears
Internal bevel gears
Varies linearly
Is uniform throughout
Varies exponentially, being more at the torque-input end
Varies exponentially, being less at the torque-input end
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
Major diameter
Minor diameter
Pitch diameter
Core diameter
Shaft B is better than shaft A
Shaft A is better than shaft B
Both the shafts are equally good
None of these
For conveying steam
In water and sewage systems
In pressure lubrication systems on prime movers
All of the above
Best method
Extremely hazardous
Has no effect as regards fatigue strength
Cheapest method
Parallel
Perpendicular
Both A and B
None of these
Brittle when cold
Brittle when hot
Brittle under all conditions
Ductile at high temperature
Thickness of plates to be riveted
Length of rivet
Diameter of head
Nominal diameter
Elastic strength
Yield strength
Brinell hardness number
Toughness
Bolts
Keys
Cotters
Rivets
3.6 N/mm² compression
3.6 N/mm² tension
7.2 N/mm² compression
7.2 N/mm² tension
Electroplating
Polishing
Coating
Shot peening
Addendum
Dedendum
Clearance
Working depth
One smaller 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
A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed 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 spitted and bent in reverse direction at other end
Welding
Pre-casting
Riveting
Casting
1-3 m/s
3-15 m/s
15-30 m/s
30-50 m/s
1 in 24 to 1 in 20
1 in 15 to 1 in 10
1 in 32 to 1 in 24
1 in 48 to 1 in 24
0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
0.75 t for both the straps on the inside and outside
0.625 t for both the straps on the inside and outside
Remains constant at all speeds
Is minimum at zero speed and increases monotonically with increase in speed
Is maximum at zero speed and decreases monotonically with increase in speed
Becomes minimum at an optimum speed and then increases with further increase in speed
1
1/π
π
π × number of teeth
Twice
Four times
Eight times
Sixteen times
Right hand with same pitch
Left hand with same pitch
Could be left or right hand
Right hand with fine pitch
Elastic limit
Ultimate tensile strength
Young's modulus
Endurance limit
Ratio of coil diameter to wire diameter
Load required to produce unit deflection
Its capability of storing energy
Its ability to absorb shocks
0.33
0.4
0.5
0.55
Porosity of the metal is largely eliminated
Grain structure of the metal is refined
Mechanical properties are improved due of refinement of grains
All of the above
l/2
l/√2
l
2 l
Equal to
Less than
Greater than
None of these