Question 1

Fillets and Rounds may be produced by machining, casting, or forging.

Accepted Answer

Fillets and rounds are types of features that can be added to parts to smooth out internal or external corners, and they can indeed be produced through various manufacturing processes including machining, casting, or forging. Each process has its own advantages and applications where it is most suitable.

Question 2

A rounded edge is usually specified:&#10;A)To improve the appearance of a part&#10;B)To reduce the chances of injury caused by a sharp edge&#10;C)To prevent interference or chipping&#10;D)All of the above are reasons for specifying a rounded edge

Accepted Answer

A

Question 3

Many prints specify sizes for fillets and rounds in a note, rather than dimensioning each one.

Accepted Answer

This practice streamlines the drawing and simplifies the notation, making it easier to read and understand, especially when the same size fillet or round is used in multiple locations.

Question 4

An arc is a portion of the circumference of a circle.

Accepted Answer

An arc is defined as any connected part of the circumference of a circle, representing a segment of the circle's perimeter.

Question 5

The dimension that extends from the center of the arc to the circumference is:&#10;A)The arc length&#10;B)The diameter&#10;C)The radius&#10;D)Never shown on a drawing

Accepted Answer

The radius of a circle or arc extends from the center to the circumference, defining the distance from the center to any point on the edge.

Question 6

A rounded surface at the inner intersection of two surfaces is:&#10;A)A fillet&#10;B)A round&#10;C)Never allowed

Accepted Answer

A fillet is a rounded surface at the inner intersection of two surfaces, commonly used in mechanical design to reduce stress concentration.

Question 7

A fillet increases the strength of the object at a weak point where a fracture might occur.

Accepted Answer

A fillet is a rounding of an interior or exterior corner of a part design, and it is used to increase the strength of the object by reducing stress concentrations at corners or changes in cross-section that might be prone to cracking or fracturing.

Question 8

The radius of an arc is specified by:&#10;A)R after the numerical dimension of the radius&#10;B)R before the numerical dimension of the radius&#10;C)The word RADIUS after the numerical dimension of the radius&#10;D)The word RADIUS before the numerical dimension of the radius

Accepted Answer

The standard notation for specifying the radius of an arc in technical drawings and documentation places the letter "R" before the numerical dimension of the radius.

Question 9

The center of a radius is indicated by:&#10;A)A small cross&#10;B)A large x&#10;C)The letter R&#10;D)A smooth curve

Accepted Answer

The center of a radius is typically indicated by a small cross on drawings and diagrams. This notation helps to clearly identify the center point from which the radius extends.

Question 10

For large radii, the radius dimension line can be broken to show that it not true length

Accepted Answer

In technical drawing, for large radii or when space is limited, the radius dimension line can indeed be broken or abbreviated to indicate that it is not showing the true length, while still conveying the necessary radius information.

Deck 14: Dimensioning Arcs and Radii