CD CD Drafter Structural & Mechanical Systems 2

Question 1

What does a double-headed arrow symbol on a structural or mechanical drawing typically indicate?

Accepted Answer

A dimension showing distance between two points

Answer

Double-headed arrows with extension lines are the standard ASME method for indicating linear dimensions on engineering drawings.

Question 2

On a mechanical drawing, what does 'BOM' or 'BOL' refer to?

Accepted Answer

Bill of Materials

Answer

BOM stands for Bill of Materials, which is the structured list of all parts, quantities, and descriptions needed to assemble the product.

Question 3

A keyway shown on a shaft drawing is used to:

Accepted Answer

Transmit torque between the shaft and a hub or gear

Answer

A keyway is a slot cut into a shaft (and matching hub) that holds a key, which transmits rotational torque between the two components.

Question 4

In structural drawings, EQ spacing notation means:

Accepted Answer

Equal spacing between repeated elements

Answer

EQ (or EQUAL) indicates that the dimension spaces between multiple repeated elements are all identical, avoiding the need to dimension each space individually.

Question 5

What type of view is used on structural drawings to show the actual profile of a cross-section cut through a member?

Accepted Answer

Section view

Answer

A section view is created by passing a cutting plane through the object and showing the resulting cross-sectional shape with crosshatching.

(CD) Certified Drafter Practice Test

(CD) Certified Drafter Practice Test

CD CD Drafter Structural & Mechanical Systems 2