MACHINE DESIGN QUIZ

Pitch lead angle

Pressure angle

Helix angle

None of these

Wires in two adjacent strands are twisted in opposite direction

Direction of twist of wires in strands is opposite to the direction of twist of strands

Wires are not twisted

Direction of twist of wires and strands are same

Both the ends fixed

One end fixed and the other end free

Both the ends hinged

One end fixed and the other end hinged

Minimum tensile strength is 200 N/mm²

Maximum shear strength is 200 N/mm²

Carbon content is 2%

Maximum compressive strength is 200 N/mm²

n.d.t.σc

p.d.σc

p.t.σc

(p - d) t.σc

0.5 to 1

3 to 5

1 to 2

5 to 10

Directly proportional to the polar moment of inertia and to the distance of the point from the axis

Directly proportional to the applied torque and the polar moment of inertia

Directly proportional to the applied torque and inversely proportional to the polar moment of inertia

Inversely proportional to the applied torque and the polar moment of inertia

Left hand threads

Pointed threads

Multiple threads

Right hand threads

Has a much smaller load carrying capacity

Does not provide much warning before failure

Is less flexible

Provides much greater time for remedial action before failure

Ductile materials

Elastic materials

All of these

Brittle materials