MACHINE DESIGN QUIZ

Decreasing its shank diameter

Decreasing its length

Increasing its length

Increasing its shank diameter

Could touch anywhere

At sides only

At bottom

Both at bottom and sides

(1/2) × √(M² + T²)

M + √(M² + T²)

(1/2) × [M + √(M² + T²)]

√(M² + T²)

Metric

Square

Buttress

Acme

Has head at one end and other end fits into a tapped hole in the other part to be joined

Has both the ends threaded

Has a head on one end and a nut fitted to the other

Has pointed threads

Dedendum

Clearance

Addendum

Working depth

The efficiency of Acme (trapezoidal) thread is less than that of a square thread

If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50%

Both (A) and (B)

The efficiency of a self locking screw can not be more than 50%

Minor diameter

None of these

Major diameter

Pitch diameter

10 mm

5 mm

25 mm

15 mm

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

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

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