Theory Quiz (DPV10253) - Chapter 6

Why are pitch errors observed in threads?

• Lack of inspection

• Incorrect ratio of tool work velocity

• Interference between mating parts

• All of the above

What is used to measure the major diameter of an external thread?

• Bench micrometer

• Thread micrometer

• One wire method

• All of the above

Which type of threads are used to transmit power in one direction?

• Square threads

• Buttress threads

• Both a. and b.

• None of the above

The distance through which a screw thread advances axially in one turn is called:

• Pitch of thread

• Lead of thread

• Depth of thread

• Diameter of thread

What is the application of fastening?

• Connecting threaded pipes and hoses to each other and to caps and fixtures.

• Moving objects linearly by converting rotary motion to linear motion

• It prevents linear motion without the corresponding rotation.

That list shows a types of thread. EXCEPT.

• ISO Metric Screw thread

• British Standard Screw thread

• Unified Threads standard

• International standard

For ISO metric threads, it consist of what shape of symmetric?

• Y-shaped

• V-shaped

• U-shaped

• O-shaped

In the plane of the thread axis, the flanks of the V have what degree of angle?

• 30°

• 60°

• 90°

• 120°

For British Standard Whitworth (BSW), state TWO (2) parts that using that standard.

• bolt heads

• screw

• nut hexagonal

How much range of diameter that using British Association Screw Threads (BA) to set small screw threads?

• 2mm

• 4mm

• 6mm

• 8mm