T sec3φ
T sec²φ
T/sec3φ
T cosecφ
A. T sec3φ
Lighter and easier to handle
Greater shock absorption
Smoother inside walls
All of the above
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
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
Ductile material
Brittle material
Elastic material
Hard material
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
Larger
Smaller
Equal
Larger/smaller depending on diameter of spring coil
18% nickel and 8% chromium
18% chromium and 8% nickel
18% nickel and 8% vanadium
18% vanadium and 8% nickel
Working depth
Clearance
Backlash
Face width
Pressure angle
Pitch circle diameter
Circular pitch
Diametral pitch
Basic size is 100 mm
Actual size is 100 mm
Difference between the actual size and basic size is 100 mm
None of the above
P1 - P2
P1 + P2
2 × (P1 + P2)
[2 × (P1 + P2)] + Pc Where Pc is centrifugal tension
Nil or lightest
Maximum
Average
Any one of the above
p.d.σc
p.t.σc
n.d.t.σc
(p - d) t.σc
1 : 1
2 : 1
3 : 2
2 : 3
0.75/ (0.75 + √v)
3/ (3 + v)
4.5/ (4.5 + v)
6/ (6 + v)
Increases the seriousness of static loading stress concentration
Lessens the seriousness of static loading stress concentration
Has no effect on it
Depends on other considerations
Material of belt
Material of pulley
Materials of belt and pulley
Belt velocity
Lower critical temperature
Upper critical temperature
Recrystallisation temperature
None of these
Are lighter in weight
Offer silent operation
Can withstand shock loads
All of these
Which are perfectly aligned
Which are not in exact alignment
Which have lateral misalignment
Whose axes intersect at a small angle
At bottom
At sides only
Both at bottom and sides
Could touch anywhere
Spindles of bench vices
Railway carriage couplings
Feed mechanism of machine tools
Screw cutting lathes
Effective
Smallest
Largest
None of these
10 to 20 %
20 to 30 %
30 to 40 %
40 to 50 %
Very serious in brittle materials and less serious in ductile materials
Very serious in ductile materials and less serious in brittle materials
Equally serious in both types of materials
Seriousness would depend on other factors
Single
Double
Triple share
None of these
Needle roller bearings
Tapered roller bearings
Spherical roller bearings
Cylindrical roller bearings
σ [1 + (b/2a)]
σ [1 + (2a/b)]
σ [1 + (b/3a)]
σ [1 + (3a/b)]
Bending stress
Shear stress
Tensile stress
Bearing stress
Brown colour
Yellow colour
White colour
Grey colour