Finishing and polishing
Shotpeening
De-carburisation
Electroplating
B. Shotpeening
(Kf + 1)/ (Kt + 1)
(Kf - 1)/ (Kt - 1)
(Kt + 1)/ (Kf + 1)
(Kt - 1)/ (Kf - 1)
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
Hollow saddle key
Hollow key
Soft key
None of these
Plasticity
Elasticity
Ductility
Malleability
Helical compression spring
Spiral spring
Torsion spring
Belleville spring
Pitch circle to the top of a tooth
Pitch circle to the bottom of a tooth
Top of a tooth to the bottom of a tooth
Addendum circle to the clearance circle
Stiffness
Ductility
Resilience
Plasticity
0.96
0.97
0.98
0.99
90
60
120
100
ZN/p
p/ZN
Z/pN
N/Zp
The connecting rod will be equally strong in buckling about X-axis and Y-axis, if Ixx = 4 Iyy
If Ixx > 4 Iyy, the buckling will occur about Y-axis
If Ixx < 4 Iyy, the buckling will occur about X-axis
The most suitable section for the connecting rod is T-section
18% nickel and 8% chromium
18% chromium and 8% nickel
18% nickel and 8% vanadium
18% vanadium and 8% nickel
Larger
Smaller
Equal
Larger/smaller depending on diameter of spring coil
Diameter of both the shafts is same
Angle of twist of both the shafts is same
Material of both the shafts is same
Twisting moment of both the shafts is same
(1 - sinφ)/ (1 + sinφ)
(1 + sinφ)/ (1 - sinφ)
(1 - sinφ)/ (1 + cosφ)
(1 + cosφ)/ (1 - sinφ)
0.33
0.4
0.5
0.55
Heavy load
Loose belt
Driving pulley too small
All of the above
Knuckle joint
Cotter joint
Oldham coupling
Universal joint
Spindles of bench vices
Railway carriage couplings
Feed mechanism of machine tools
Screw cutting lathes
Yes
No
Sometimes
Rarely
Surface
Just below the surface
Within the core
None of the above
Tensile stress
Bending stress
Bearing stress
Shear stress
Jam nut
Castle nut
Sawn nut
Ring nut
Bondability
Embeddability
Comformability
Fatigue strength
1 in 16
1 in 32
1 in 48
1 in 100
3 mm
6 mm
8 mm
12 mm
Elliptical cross-section
Major axis in plane of rotation
Major axis twice the minor axis
All the three characteristics
Intersecting and the teeth are curved
Non-intersecting and nonparallel and the teeth are curved
Non-intersecting and non-parallel and the teeth are straight
None of the above
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
40
50
70
100