Question 1

One of the most accurate methods of producing holes that are round, concentric, and accurately sized is:&#10;A)Boring&#10;B)Drilling&#10;C)Reaming&#10;D)Countersinking

Accepted Answer

A

Question 2

Hole diameters should dimensioned in views where they appear as:&#10;A)symmetry lines&#10;B)hidden lines&#10;C)circles&#10;D)section lines

Accepted Answer

Hole diameters are best dimensioned in views where they appear as circles because this representation clearly shows the true size and shape of the hole, making it easier for manufacturing or inspection purposes.

Question 3

The depth of a hole is defined as the distance from the surface of the part to the point of the drill.

Accepted Answer

The depth of a hole is typically defined as the distance from the surface of the material being drilled into, to the bottom of the hole, not just to the point of the drill.

Question 4

Dimensions for counterbores include the angle and the required finished diameter.

Accepted Answer

Counterbore dimensions typically include the diameter of the counterbore, the depth, and sometimes the pilot hole size, but not the angle. The angle is more relevant to countersinks.

Question 5

The method of dimensioning a hole often depends on the size of the hole and how it is to be produced

Accepted Answer

The method of dimensioning a hole is influenced by its size and the manufacturing process used to create it, as these factors determine the most appropriate and clear way to convey the hole's specifications on technical drawings.

Question 6

The process that is used to provide a smooth, flat surface on an irregular surface is:&#10;A)Reaming&#10;B)Boring&#10;C)Countersinking&#10;D)Spotfacing

Accepted Answer

Spotfacing is the process used to create a smooth, flat surface around a hole on an irregular surface, typically to ensure that a fastener or washer sits flush with the surface.

Question 7

The spiral flutes of a twist drill carry chips out of the hole.

Accepted Answer

The spiral flutes of a twist drill are specifically designed to channel and eject chips from the hole as the drill advances, ensuring efficient removal of material and preventing clogging.

Question 8

Keyways and keyseats are dimensioned from the opposite side of the hole or shaft

Accepted Answer

Keyways and keyseats are dimensioned from the opposite side of the hole or shaft because it is necessary to ensure that the keyway or keyseat is located in the correct position relative to the hole or shaft. If the keyway or keyseat were dimensioned from the same side of the hole or shaft, it would be possible for the keyway or keyseat to be located in the wrong position, which could cause the key to bind or the shaft to fail.

Question 9

A flat-bottomed hole that provides clearance for the head of a screw, bolt, or pin is&#10;A)A spotface&#10;B)A reamed hole&#10;C)A counterbore&#10;D)A through hole

Accepted Answer

A counterbore is specifically designed to create a flat-bottomed hole that allows the head of a screw, bolt, or pin to sit flush with or below the surface of the material.

Question 10

Holes that do not go all the way through a part are commonly referred to as blind holes.

Accepted Answer

Blind holes are defined as holes that are drilled to a specific depth without breaking through to the other side of the workpiece, making them not go all the way through the part.

Question 11

The process that allows the head of a flat head screw to be flush or slightly below the surface of the workpiece is:&#10;A)Reaming&#10;B)Counterboring&#10;C)Countersinking&#10;D)Spotfacing

Accepted Answer

The answer of The process that allows the head of...

Deck 13: Dimensioning Holes, Keyways, and Keyseats