Socket joint
Nipple joint
Union joint
Spigot and socket joint
A. Socket joint
The stress concentration in static loading is more serious in ductile materials and less serious in brittle materials
The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials
The toughness of a material increases when it is heated
The shear stress in a beam varies from zero at the neutral surface and maximum at the outer fibres
Yes
No
Sometimes
Rarely
Mild steel
High speed steel
Stainless steel
Aluminium
1
2
3
4
Normal pitch
Axial pitch
Diametral pitch
Module
One-fourth
One-third
One-half
Double
10°-20°
30°-40°
40°-60°
60°-80°
Right hand
Left hand
Both A and B
None of these
Increases
Decreases
Remains unchanged
None of these
Reducing stress concentration
Ease of manufacture
Safety
Fullering and caulking
0.5 times
Equal to
2 times
Double
Whose upper deviation is zero
Whose lower deviation is zero
Whose lower as well as upper deviations are zero
Does not exist
Low carbon steel
High carbon steel
Medium carbon steel
High speed steel
The pitch of the thread is 24 mm and depth is 2 mm
Cross-sectional area of the threads is 24 mm²
The nominal diameter of bolt is 24 mm and pitch is 2 mm
The effective diameter of bolt is 24 mm and there are 2 threads per cm
Nickel
Chromium
Nickel and chromium
Cobalt and molybdenum
1/sinθ
1/cosθ
1/tanθ
sinθ cosθ
Brinell
Rockwell
Vickers
None of the above
340 to 360
420 to 450
More than 400
300 to 320
1 in 5
1 in 10
1 in 24
1 in 40
Both ends hinged
Both ends fixed
One end fixed and the other end hinged
One end fixed and the other end free
Ratio of coil diameter to wire diameter
Load required to produce unit deflection
Its capability of storing energy
Indication of quality of spring
Increasing its shank diameter
Increasing its length
Decreasing its shank diameter
Decreasing its length
10
15
20
25
Single
Double
Triple share
None of these
Zero
Less than one
Greater than one
None of these
The pitch of rivets is obtained by equating the tearing resistance of the plate to the shearing resistance of the rivets
The pitch of rivets should not be less than 2d, where d is the diameter of rivet hole
The maximum value of the pitch of rivets for a longitudinal joint of a boiler, as per I.B.R., is given by Pmax = C.t + 41.28 mm
According to I.B.R., the thickness of butt strap shall not be less than 5 mm
8
12
18
20
Stiffness
Ductility
Resilience
Plasticity
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
ZN/p
p/ZN
Z/pN
N/Zp