1
2
3
4
D. 4
Direction of twist of wires in strands is opposite to the direction of twist of strands
Direction of twist of wires and strands are same
Wires in two adjacent strands are twisted in opposite direction
Wires are not twisted
Margin
Pitch
Back pitch
Diagonal pitch
Tightening it properly
Increasing shank diameter
Grinding the shank
Making shank diameter equal to core diameter of thread.
Material of belt
Material of pulley
Materials of belt and pulley
Belt velocity
Joint may not open up
Bolts are weakest elements
The resultant load on the bolt would not be affected by the external cyclic load
Bolts will not loosen during service
Decrease the tendency of belt to slip
Increase the power transmission capacity
Increase the wrap angle and belt tension
All the above objectives
Initial tension
External load applied
Sum of the initial tension and external load applied
Initial tension or external load, whichever is greater
V-belt drive
Rope drive
Crossed flat belt drive
Chain drive
Butt joint with single cover plate
Butt joint with double cover plate
Lap joint with one ring overlapping the other
Any one of the above
Both sides of the actual size
One side of the actual size
One side of the nominal size
Both sides of the nominal size
First type
Second type
Third type
Any one of these
Heavier
Lighter
Moderate
None of these
Effective length of column to least radius of gyration of the column
Width of column to depth of column
Maximum size of column to minimum size of column
Effective length of column to width of column
Tearing strength of plate (Pt)
Shearing strength of rivet (Ps)
Crushing strength of rivet (Pc)
Least value of Pt Ps and Pc
Longitudinal stress
Hoop stress
Longitudinal and hoop stress
None of these
One-fourth
One-third
One-half
Double
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
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
Similar to small size tap bolts except that a greater variety of shapes of heads are available
Slotted for a screw driver and generally used with a nut
Used to prevent relative motion between parts
Similar to stud
The strength of the shaft
The rigidity of the shaft
Both the strength and rigidity of the shaft
The ductility of the shaft
Finishing and polishing
Shotpeening
De-carburisation
Electroplating
10° to 15°
15° to 20°
20° to 35°
35° to 50°
Minor diameter
Major diameter
Pitch diameter
None of these
Base circle
Pitch circle
Addendum circle
Dedendum circle
Both the ends fixed
Both the ends hinged
One end fixed and the other end hinged
One end fixed and the other end free
d
1.25 d
1.5 d
1.75 d
(k₁ k₂)/ (k₁ + k₂)
(k₁ - k₂)/ (k₁ + k₂)
(k₁ + k₂)/ (k₁ k₂)
(k₁ - k₂)/ (k₁ k₂)
1/sinθ
1/cosθ
1/tanθ
sinθ cosθ
0.124 - (0.684/T)
0.154 - (0.912/T)
0.175 - (0.841/T)
None of these
A parallel sunk key is a taperless key
A parallel sunk key may be rectangular or square in cross-section
A flat saddle key is a taper key which fits in a key way of the hub and is flat on the shaft
All of the above