DDP MP1 Review

Which of the following is the symbol for depth?

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Which of the following is the symbol for diameter?

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If 2 lines are not at right angles to one another- they can be adjusted to 90 degrees by using which geometric constraint?

• Parallel

• Perpendicular

• Horizontal

• Vertical

Answer explanation

The Leaning Tower of Pisa in Italy is not perpendicular to the ground. It is known worldwide for its nearly four-degree lean, the result of an unstable foundation.

The 1st part brought into an OnShape Assembly should be the base part. You should immediately right click on it and select ____.

• FIX

• BASE

• EXTRUDE

• ASSEMBLE

Answer explanation

That FIXED part is the base that most (if not all) other components will be assembled to.

How many degrees of freedom exist in 3 dimensional space

• 3

• 6

• 360

• 365

Answer explanation

360 is the number of degrees in a circle, and 365 is the number of days in a year.

3 rotations + 3 translations = 6 degrees of freedom.

What is another word for translation as it applies here?

• revolving

• spinning

• enlarging

• sliding

Answer explanation

The 3 translations are the linear movements along the x, y, and z axes.

What are yaw, pitch, and roll?

• Rotations around the x, y, and z axes

• Translations along the x, y, and z axes

• 3 geometric constraints for 2D sketches

• Methods of making bread

Answer explanation

An aircraft in flight is free to rotate in three dimensions: yaw, nose left or right about an axis running up and down; pitch, nose up or down about an axis running from wing to wing; and roll, rotation about an axis running from nose to tail.

In OnShape, "Fastened Mate" allows for how many degrees of freedom?

• 0

• 1

• 2

• 6

Answer explanation

Fasten Mate "glues" 2 parts together so they do not move at all

What has been applied to the edge of this block to round over the corner?

• Chamfer

• Fillet

• Extrusion

• Material

For the isometric view shown, which view would look like a backwards "L"?

• Top view

• Front View

• Right-side View

• Isometric View

Answer explanation

There would also be a vertical hidden line on the bottom of the "L" because of the cut-out seen in the top view!