Engineering Questions with Answers - Multiple Choice Questions

# Machine Dynamics MCQ – Classifications of Synthesis Problem

1 - Question

In the following geometric modelling techniques, which cannot be used for finite element analysis:
a) Wireframe modelling
b) Surface modelling
c) Solid modelling
d) None of the mentioned

Explanation: None

2 - Question

In the following geometric primitives, which is not a solid entity of CSG modelling:
a) Box
b) Cone
c) Cylinder
d) Circle

Explanation: In 3D computer graphics and CAD CSG is often used in procedural modeling. CSG can also be performed on polygonal meshes, and may or may not be procedural and/or parametric.Typically they are the objects of simple shape: cuboids, cylinders, prisms, pyramids, spheres, cones.

3 - Question

The number of lines required to represent a cube, in a wireframe model is:
a) 8
b) 6
c) l2
d) I6

Explanation: None

4 - Question

Which of the following is not an analytical entity?
a) Line
b) Circle
c) Spline
d) Parabola

Explanation: In mathematics, a spline is a numeric function that is piecewise-defined by polynomial functions, and which possesses a high degree of smoothness at the places where the polynomial pieces connect.

5 - Question

Which of the following is not a synthetic entity?
a) Hyperbola
b) Bezier curve
c) B-spline curve
d) Cubic spline curve

Explanation: he hyperbola is one of the three kinds of conic section, formed by the intersection of a plane and a double cone.

6 - Question

Which one of the following does not belong to the family of conics?
a) Parabola
b) Ellipse
c) Hyperbola
d) Line

Explanation: A line is a straight one-dimensional figure having no thickness and extending infinitely in both directions. A line is sometimes called a straight line or, more archaically, a right line.

7 - Question

The number of tangents required to describe cubic splines is:
a) 2
b) 1
c) 3
d) 4

Explanation: Since the order of cubic spline is one, therefore only only tangent is required to describe it.

8 - Question

The order of the cubic spline is the
a) 2″ order
b) 3″ order
c) 1″ order
d) 4″ order

Explanation: As only one tangent is required to describe cubic spline, therefore its order is 1.

9 - Question

The shape of the Bezier curve is controlled by:
a) Control points
b) Knots
c) End points
d) All of the mentioned

Explanation: A control point (CP, also control and checkpoint) is a marked way point used in orienteering and related sports such as rogaining and adventure racing.

10 - Question

The curve that follows a convex hull property is:
a) Cubic spline
b) B-spline
c) Bezier curve
d) Both (b) and (c)