More
Less
Same
None of these
A. More
Determining brittleness
Protecting metal against corrosion
Protecting metal against wear and tear
Experimental stress analysis
Parallel
Perpendicular
Both A and B
None of these
To apply forces
To measure forces
To absorb shocks
To store strain energy
Larger than
Smaller than
Equal to
None of these
Shafts are arranged parallel and rotate in the opposite directions
Shafts are arranged parallel and rotate in the same directions
Shafts are arranged at right angles and rotate in one definite direction
Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft
30°
45°
60°
80°
Material and geometry of the part
Geometry of the part
Material of the part
None of these
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
Provided with detachable caps
Mild steel
Dead mild steel
Medium carbon steel
High carbon steel
Initial tension
External load applied
Relative elastic yielding (springness) of the bolt and the connected member
All of the above
Single
Double
Triple share
None of these
Bottom side only
Top side only
On both sides
Any side
Cast iron
Wrought iron
Mild steel
Aluminium
3 Pc
Pc
Pc/3
2 Pc Where, Pc = tension in belt due to centrifugal force
Ductile materials
Brittle materials
Elastic materials
All of the above
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
Have contact at the bottom most of the bearing
Move towards right of the bearing making no metal to metal contact
Move towards right of the bearing making the metal to metal contact
Move towards left of the bearing making metal to metal contact
5 mm
10 mm
15 mm
25 mm
90
60
120
100
Eutectoid steel
Hypereutectoid steel
Hypo-eutectoid steel
None of these
√(Pmax / 2m)
√(Pmax / 3m)
√(Pmax / m)
√(3m /Pmax) Where m = mass of belt per metre (kg/m) Pmax = maximum permissible tension in belt (N)
P1 - P2
P1 + P2
2 × (P1 + P2)
[2 × (P1 + P2)] + Pc Where Pc is centrifugal tension
In decreasing the slip of the belt
In increasing the slip of the belt
To keep the belt in centre on a pulley while it is in motion
To increase pulley life
Increasing the length of bar
Decreasing the cross-sectional area of the bar
Decreasing the modulus of elasticity of the bar
All of the above
To reduce friction
To facilitate slipping of balls
To prevent the lubricant from flowing out
To maintain the balls at a fixed distance apart
Half the angle between two inclined faces in axial plane
The angle between the tangent to the pitch helix and the plane of rotation
The angle between the tangent to the pitch helix and an element of the cylinder
None of the above
2μ sinθ/(θ + sinθ)
μ sinθ/(2θ + sin 2θ)
4μ sinθ/(θ + sinθ)
4μ sinθ/(2θ + sin 2θ)
l/2
l/√2
l
2 l
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
Static load
Dynamic load
Static as well as dynamic load
Completely reversed load