Hands-On AutoCAD LT ©2005

Chapter 13: Rotary Devices

Creating Cam Profile Drawings

1.
A cam profile drawing shows
A)how the cam will operate under various conditions.
B)how the cam fits with the surrounding parts of an assembly.
C)the shape of the cam.
D)the cam displacement.
2.
The most efficient AutoCAD LT® command for creating a cam profile drawing is the
A)LINE command.
B)PLINE command.
C)SPLINE command.
D)DLINE command.
3.
To convert a polyline into a spline, enter the SPLINE command and select the
A)Fit Tolerance option.
B)Object option.
C)Close option.
D)Tangent option.
4.
When the tolerance for a spline is set to 0, the spline
A)passes through all of the specified points.
B)does not pass through any of the specified points.
C)passes within 1 degree of tolerance of the specified points.
D)consists of straight line segments that joint the specified points.
5.
If you press Enter when AutoCAD LT® prompts you for the start and end tangents,
A)a dialog box appears allowing you to calculate the tangents.
B)AutoCAD LT® calculates the tangents automatically.
C)the tangents are set to a default value specified in the SPLINTANG system variable.
D)the tangents are set to a value of 1.
6.
To edit a spline most accurately,
A)select the spline and use grips to reposition the control points.
B)use the SPLINE command.
C)use the SPLINEDIT command.
D)select the spline and double-click to display the Properties dialog box.
7.
The Reverse option of the SPLINEDIT command
A)adds and weights control points.
B)reverses previous operations using the SPLINEDIT command.
C)cancels the last command.
D)changes the direction of the spline.
8.
To change the tolerance of an existing spline, enter the SPLINEDIT command and choose the
A)Fit Data option.
B)Move Vertex option.
C)Refine option.
D)Undo option.
9.
To change the location of a control point, enter the SPLINEDIT command and choose the
A)Fit Data option.
B)Move Vertex option.
C)Refine option.
D)Undo option.
10.
To calculate splines, AutoCAD LT® uses
A)B-rep mathematics.
B)NURBS mathematics.
C)Boolean mathematics.
D)algebraic mathematics.
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