CAD-CAM and Automation MCQs with answers Page - 47

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Q. 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

A

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Q. 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

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Q. 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

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Q. 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

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Q. 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

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Q. 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

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Q. 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

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Q. The B-spline curve has a

  • (A) first-order continuity
  • (B) second-order continuity
  • (C) zero-order continuity
  • (D) none of the above

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Q. 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

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Q. 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

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