McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
Chapters
| 101. |
In synthetic curves, second-order continuity yields |
| A. | a position continuous curve |
| B. | a slope continuous curve |
| C. | a curvature continuous curve |
| D. | none of the above |
| Answer» C. a curvature continuous curve | |
| 102. |
Mathematically, the ellipse is a curve generated by a point moving in space such that at any position the sum of its distances from two fixed points (foci) is constant and equal to |
| A. | the major diameter |
| B. | the minor diameter |
| C. | semi major diameter |
| D. | semi-minor diameter |
| Answer» A. the major diameter | |
| 103. |
When a smooth curve is approximated through the data points, then the curve is known as |
| A. | interpolant curve |
| B. | approximation curve |
| C. | pitch curve |
| D. | data curve |
| Answer» B. approximation curve | |
| 104. |
In Beizer Curve, the curve follows |
| A. | the control points |
| B. | the shape of the defining polygon |
| C. | the defining points |
| D. | none of the above |
| Answer» B. the shape of the defining polygon | |
| 105. |
In Beizer Curve, the flexibility of the shape would increase with |
| A. | decrease in the number of vertices |
| B. | increase in the number of vertices |
| C. | decrease in control points |
| D. | none of the above |
| Answer» B. increase in the number of vertices | |
| 106. |
The number of control points can be added or subtracted in . |
| A. | Bezier curve |
| B. | B-spline curve |
| C. | Cubic spline curve |
| D. | all of the above |
| Answer» B. B-spline curve | |
| 107. |
The degree of the curve is independent of the number of control points in . |
| A. | Hermite cubic spline curve |
| B. | Bezier curve |
| C. | B-spline curve |
| D. | Hyperbola |
| Answer» C. B-spline curve | |
| 108. |
The is used to create a surface using curves that form closed boundaries. |
| A. | ruled Surface |
| B. | plane Surface |
| C. | coons patch |
| D. | surface of Revolution |
| Answer» C. coons patch | |
| 109. |
B-rep and C-Rep are the methods of |
| A. | solid modeling |
| B. | surface modeling |
| C. | wireframe modeling |
| D. | 2D modeling |
| Answer» A. solid modeling | |
| 110. |
Which kind of model can store information about geometry |
| A. | Solid model |
| B. | Surface model |
| C. | Wireframe model |
| D. | none of the above |
| Answer» A. Solid model | |
| 111. |
From the following, which method is also called as the Building Block Approach? |
| A. | Cellular Decomposition |
| B. | Spatial Occupancy Enumeration |
| C. | Generalized Sweeps |
| D. | Constructive Solid Geometry |
| Answer» D. Constructive Solid Geometry | |
| 112. |
Structuring and combining the primitives of the solid model in the graphics database, is achieved by the use of….. |
| A. | FEA |
| B. | transformations |
| C. | boolean operations |
| D. | none of the above |
| Answer» C. boolean operations | |
| 113. |
The data representation of CSG objects is represented by |
| A. | a binary tree |
| B. | a boolean operation |
| C. | a primitive |
| D. | none of the above |
| Answer» A. a binary tree | |
| 114. |
is an extension of the wireframe model with additional face information added. |
| A. | CSG |
| B. | B-rep |
| C. | Loft |
| D. | none of the above |
| Answer» B. B-rep | |
| 115. |
For 3D modeling of automobile body styling, which of the following is a preferred technique? |
| A. | Constructive Solid Geometry |
| B. | Pure Primitive Instancing |
| C. | Boundary Representation |
| D. | Spatial Occupancy Enumeration |
| Answer» C. Boundary Representation | |
| 116. |
Which of the following uses a number of two-dimensional profiles for generating a three-dimensional object? |
| A. | Tweaking |
| B. | Lofting |
| C. | Filleting |
| D. | none of the above |
| Answer» B. Lofting | |
| 117. |
To create a hollow part, which of the following command would be most efficient? |
| A. | Extrude |
| B. | Sweep |
| C. | Shell |
| D. | Revolve |
| Answer» C. Shell | |
| 118. |
The curve is defined as the locus of a point moving with _ degree of freedom |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 119. |
Write parametric equation of line having end points P1(3,5,8) and P2 (6,4,3). |
| A. | [3 5 8]+u[3 -1 -5] |
| B. | [3 5 8]+u[3 1 5] |
| C. | [3 8 5]+u[3 -1 -5] |
| D. | [3 5 8]+u[-3 1 5] |
| Answer» A. [3 5 8]+u[3 -1 -5] | |
| 120. |
Find the tangent vector of line having end points P1(3,5,8) and P2 (6,4,3) |
| A. | 3i+j-5k |
| B. | 3i-j-5k |
| C. | 3i-j+5k |
| D. | -3i-j-5k |
| Answer» B. 3i-j-5k | |
| 121. |
Find coordinates of points on line having end points P1(3,5,8) and P2 (6,4,3) at u=0.25 |
| A. | [3.75 4.25 6.25] |
| B. | [3.25 4.25 6.25] |
| C. | [3.75 4.75 6.75] |
| D. | [4.25 3.75 6.25] |
| Answer» C. [3.75 4.75 6.75] | |
| 122. |
Two lines are parallel when |
| A. | P1 X P2=0 |
| B. | P1 . P2=0 |
| C. | P1 = P2 |
| D. | P1+ P2=0 |
| Answer» A. P1 X P2=0 | |
| 123. |
Two lines L1 and L2 having Parametric equations are P1=[3 4 7]+u[2 2 -6] and P2=[1 5 -2]+u[1 4 2]. Tangent vector for line L1 |
| A. | 2i+2j-6k |
| B. | 2i+2j+6k |
| C. | 2i-2j-6k |
| D. | 6-2j-2k |
| Answer» A. 2i+2j-6k | |
| 124. |
For Q 45, Tangent vector for line L2 |
| A. | i+4j-k |
| B. | 2i+4j+k |
| C. | i-4j-2k |
| D. | i+4j+2k |
| Answer» D. i+4j+2k | |
| 125. |
For Q 45, Lines are perpendicular? |
| A. | True |
| B. | False |
| C. | D |
| Answer» B. False | |
| 126. |
Parametric equation for circle |
| A. | X=x+Rcosu; Y=y+Rsinu; Z=z |
| B. | X=Rcosu; Y=Rsinu; Z=z |
| C. | X=x+Rsinu; Y=y+Rcosu; Z=z |
| D. | X=Rsinu; Y=y+Rcosu; Z=z |
| Answer» A. X=x+Rcosu; Y=y+Rsinu; Z=z | |
| 127. |
Center point of circle |
| A. | [x1+x2]/2; [y1+y2]/2; [z1+z2]/2 |
| B. | [x1-x2]/2; [y1-y2]/2; [z1-z2]/2 |
| C. | [x1-x2]; [y1-y2]; [z1-z2] |
| D. | [x2-x1]; [y2-y1]; [z2-z1] |
| Answer» A. [x1+x2]/2; [y1+y2]/2; [z1+z2]/2 | |
| 128. |
A circle is represented by center point [5,5] and radius 6 units. Find the parametric equation of circle and determine the various points on circle in first quadrant if increment in angle by 45o |
| A. | 9.24,9.24 |
| B. | 9.42,9.42 |
| C. | 9,9 |
| D. | 11,5 |
| Answer» A. 9.24,9.24 | |
| 129. |
A circle is passing through two end points A[6,4] and B[10,10]. Find center point of circle |
| A. | 7,8 |
| B. | 8,8 |
| C. | 8,7 |
| D. | 7,7 |
| Answer» C. 8,7 | |
| 130. |
For Q 51, find radius of circle |
| A. | 3 |
| B. | 3.6 |
| C. | 4 |
| D. | 3.5 |
| Answer» B. 3.6 | |
| 131. |
For Q 51, find coordinates of point on circle at u=0 |
| A. | 11.6, 7 |
| B. | 7, 11 |
| C. | 11, 7 |
| D. | 11.5, 7.5 |
| Answer» A. 11.6, 7 | |
| 132. |
Find parametric equation for X-coordinates of hermite cubic spline curve having end points P0[4,4]; P1[8,5] |
| A. | -5u3+8u2+u+1 |
| B. | 5u3+8u2+u+1 |
| C. | 8u3-5u2-u+1 |
| D. | 8u3+5u2+u+1 |
| Answer» A. -5u3+8u2+u+1 | |
| 133. |
Find parametric equation for Y-coordinates of Hermite cubic spline curve having end points P0[4,4]; P1[8,5] |
| A. | 2u3-3u2+2u+4 |
| B. | 3u3-2u2-2u-4 |
| C. | 2u3-3u2-2u-4 |
| D. | 2u3+3u2+2u+4 |
| Answer» A. 2u3-3u2+2u+4 | |
| 134. |
C0 continuity refers to |
| A. | Common tangent |
| B. | Common curvature |
| C. | Common point |
| D. | Common normal |
| Answer» C. Common point | |
| 135. |
C‘ continuity refers to |
| A. | Common tangent |
| B. | Common curvature |
| C. | Common point |
| D. | Common normal |
| Answer» B. Common curvature | |
| 136. |
C” continuity refers to |
| A. | Common tangent |
| B. | Common curvature |
| C. | Common point |
| D. | Common normal |
| Answer» A. Common tangent | |
| 137. |
Which of the following is not a method to describe a curve mathematically? |
| A. | Explicit form |
| B. | Laplace form |
| C. | Implicit form |
| D. | Parametric form |
| Answer» B. Laplace form | |
| 138. |
When the curve passes through all the data points, then the curve is known as |
| A. | approximation curve |
| B. | pitch curve |
| C. | data curve |
| D. | interpolant curve |
| Answer» D. interpolant curve | |
| 139. |
When a smooth curve is approximated through the data points, then the curve is known as |
| A. | approximation curve |
| B. | pitch curve |
| C. | data curve |
| D. | interpolant curve |
| Answer» A. approximation curve | |
| 140. |
Synthetic curve pass through defined data points and thus can be represented by |
| A. | polynomial equations |
| B. | exponential equations |
| C. | partial differential equations |
| D. | differential equations |
| Answer» A. polynomial equations | |
| 141. |
Mathematically, the ellipse is a curve generated by a point moving in space such that at any position the sum of its distances from two fixed points (foci) is constant and equal to |
| A. | the major diameter |
| B. | the minor diameter |
| C. | semi major diameter |
| D. | semi-minor diameter |
| Answer» A. the major diameter | |
| 142. |
The parabola is defined mathematically as a curve generated by a point that moves such that its distance from the focus is always__________the distance to the directrix |
| A. | larger than |
| B. | smaller than |
| C. | equal to |
| D. | none of the above |
| Answer» C. equal to | |
| 143. |
In synthetic curves, zero-order continuity yields |
| A. | a position continuous curve |
| B. | a slope continuous curve |
| C. | a curvature continuous curve |
| D. | none of the above |
| Answer» A. a position continuous curve | |
| 144. |
In synthetic curves, first-order continuity yields |
| A. | a position continuous curve |
| B. | a slope continuous curve |
| C. | a curvature continuous curve |
| D. | none of the above |
| Answer» B. a slope continuous curve | |
| 145. |
The B-spline curve has a |
| A. | first-order continuity |
| B. | second-order continuity |
| C. | zero-order continuity |
| D. | none of the above |
| Answer» B. second-order continuity | |
| 146. |
To determine the coefficients of the equation – two end-points and the two tangent vectors. This statement is true for which of the following? |
| A. | B-spline curve |
| B. | Hermite Cubic Spline Curve |
| C. | Beizer curve |
| D. | none of the above |
| Answer» B. Hermite Cubic Spline Curve | |
| 147. |
The Bezier curve is smoother than the Hermite cubic spline because it has _________ order derivatives. |
| A. | lower |
| B. | higher |
| C. | lower and higher both |
| D. | none of the above |
| Answer» B. higher | |
| 148. |
In the bezier curve, the curve is always________to first and last segments of the polygon |
| A. | normal |
| B. | parallel |
| C. | tangent |
| D. | none of the above |
| Answer» C. tangent | |
| 149. |
________curves allow local control of the curve. |
| A. | Analytical |
| B. | Hermite cubic spline |
| C. | Beizer |
| D. | B-Spline |
| Answer» D. B-Spline | |
| 150. |
In Beizer Curve, the curve follows __________ |
| A. | the control points |
| B. | the shape of the defining polygon |
| C. | the defining points |
| D. | none of the above |
| Answer» B. the shape of the defining polygon | |
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