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MCQ | Circle Cartoon and Ellipse Drawing Algorithms in Computer Graphics

Multiple pick questions and answers (MCQ) based on the Circle Drawing and Ellipse Cartoon Algorithms in computer graphics with four choices, correct answer and explanation.
Submitted by IncludeHelp, on April 11, 2021

Question 1: What is the equation for a circle?

1. y = mx + c
2. y² = rⁱⁱ – 10ⁱⁱ
3. r_x ²y^two = r_x ^twor_y ⁱⁱ - r_y ²x^two
4. None of the above

Respond: b. y² = r^two – x²

Explanation:

The Equation of circumvolve is:

x2          + y2          = r2          y2          = r2          – tentwo        

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Question 2: Which among the following is the right equation for an ellipse?

1. y = mx + c
2. y^two = r² – x²
3. r_x ²y² = r_x ²r_y ² - r_y ⁱⁱx²
4. None of the above

Answer: c. r₁₀ ²y² = r_x ⁱⁱr_y ² - r_y ²x²

Explanation:

The Equation of an ellipse is:

ry          twox2          + r10          iiy2          = r10          2ry          2          r10          iiytwo          = rx          2ry          two          - ry          iiten2        

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Question 3: Which of the post-obit properties is followed past the ellipse?

1. 4 – symmetry belongings
2. 8 – symmetry property
3. vi – symmetry property
4. All of the in a higher place

Reply: a. 4 – symmetry property

Explanation:

An ellipse is identical through all its quadrant values. i.east., if you place the origin at the center of the ellipse, so it will have the mirror images for its points on all the four quadrants. Hence, the ellipse is said to have the 4-symmetry property.

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Question 4: Which of the following are the methods to ascertain a circle?

1. Using polynomial method.
2. Using polar coordinates methods.
3. Both a. and b.
4. None of the to a higher place

Answer: c. Both a. and b.

Caption:

A circle can be divers from both the stated options: Using the polynomial method as well as the polar coordinates method.

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Question 5: "The mid-point algorithm is used for both circumvolve drawing also as ellipse drawing, but the procedure is unlike for both of them."
Based upon the above statement, decide whether the following condition is true or simulated.
"The circle follows 8 - symmetry property whereas the ellipse follows iv – symmetry belongings."

1. True
2. False

Answer: a. Truthful

Caption:

The circle is identical forth all its octants whereas an ellipse is identical long all its quadrants. Hence the given statement: "The circle follows 8 - symmetry property whereas the ellipse follows four – symmetry holding" is truthful.

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Question 6: Why does a circumvolve fatigued on a computer screen look elliptical?

1. Because of its elliptical nature
2. Because CRTs pattern is elliptical
3. Information technology is due to the ratio aspect of computer monitor
4. None of these

Respond: c. It is due to the ratio aspect of reckoner monitor

Explanation:

The screen attribute ratio, a circle drawn on the panel seems to be elliptical.

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Question 7: With reference to properties of a circle, a circle is defined equally a set of points that are all the given distance (ten_c ,y_c).

1. True
2. Simulated

Answer: a. True

Explanation:

A circumvolve is defined as a set of points that are all the given distance (x_c ,y_c).

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Question 8: An ellipse consists of two axes: major and minor axes where the major axis is the longest diameter and minor axis is the shortest diameter.

1. True
2. False

Answer: a. True

Caption:

From the image aeroplane, an ellipse consists of 2 axes: major and minor axes. The major centrality is the longest bore and minor axis is the shortest bore. Each end of the major axis is the vertex, and each end of the small-scale axis is the co-vertex of the ellipse.

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Question 9: During a circle creation using Bresenham's algorithm, it is ordinarily simple to generate a circumvolve?

1. One octant first and other by successive translation
2. One octant first and other by successive reflection
3. Both A and B
4. None of the above mentioned

Answer: b. One octant start and other by successive reflection

Explanation:

Only ane octant is needed in Bresehnam's algorithm, and the remaining octants can be obtained past successive reflection.

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Question 10: In computer graphics, the mid-betoken ellipse algorithm is an ___ of drawing an ellipse.

1. Elliptical method
2. Decremented method
3. Circulation method
4. None of the above mentioned

Answer: d. None of the above mentioned

Explanation:

In computer graphics, the mid-betoken ellipse algorithm is an Incremental method of cartoon an ellipse.

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Question 11: Midpoint ellipse algorithm plots points of an ellipse on the first quadrant by dividing the quadrant into ii regions.

1. True
2. Simulated

Answer: a. Truthful

Explanation:

A midpoint ellipse algorithm plots points of an ellipse on the offset quadrant by dividing the quadrant into two regions.

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Question 12: In the following figure, which i will be the appropriate pair of coordinates in the blanks?

1. (-10, y)
2. (x, -y)
3. (-ten, -y)
4. (10, y)

Respond: a. (-x, y)

Explanation:

(-x, y) will exist the right pair of coordinates.

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Question 13: The value of the decision parameter determines whether the mid-point lies ___ purlieus and the and so position of the mid-indicate help in drawing the ellipse.

1. At boundaries
2. Inside, outside, or on the ellipse
3. Merely inside the boundaries
4. Only outside the boundaries

Answer: b. Within, outside, or on the ellipse

Explanation:

The value of the decision parameter determines whether the mid-point lies Inside, outside, or on the ellipse purlieus and the then position of the mid-betoken helps in drawing the ellipse.

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Question fourteen: Which of the following method/methods are used to get and prepare the location of a pixel, object or text in a desktop's active area?

1. Gravity field method
2. Basic positioning method
3. Only A
4. None of The Above

Answer: b. Basic positioning method

Explanation:

In the agile region of a desktop, basic positioning methods are used to become and set the location of a pixel, point, or document.

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Question 15: The ___ of the circle is often used by the midpoint circle drawing algorithm to produce.

1. Two-style symmetry
2. Six-fashion symmetry
3. Eight-mode symmetry
4. None of the mentioned higher up

Respond: a. Ii-way symmetry

Explanation:

The two-fashion symmetry is used to create a circumvolve in the midpoint circle cartoon algorithm.

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Question xvi: Let R exist the circumference of a circumvolve. The angle created by an arc of length R at the circle's eye is?

1. i radian
2. xc caste
3. 60 degree
4. 1 degree

Reply: a. 1 radian

Explanation:

One radian is the angle generated past wrapping a circumvolve'south radius around its circumference.

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Question 17: To draw a perspective image of a globe, showtime enclose the circle in ___ then add pointing points, and and then on.

1. Circumvolve
2. Rectangle
3. Ellipse
4. All of the mentioned above

Respond: b. Rectangle

Explanation:

The circle can be enclosed in a foursquare to achieve points on an ellipse, and the midpoints of the sides and intersection of diagonals with the circle are 8 points. Parallel to the foursquare'due south edges, lines are traced along these stages.

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Question 18: ___ is divers as a group of points where the sum of the distances for all points is the aforementioned.

1. Lines
2. Dots
3. Simply A
4. Ellipses

Respond: d. Ellipses

Explanation:

Ellipses are a set of lines.

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Question 19: The orientation of a picture plane in relation to the source is unaffected by the perspective view's distance.

1. True
2. False

Answer: a. True

Explanation:

If an entity is set behind the film plane, it volition appear smaller in perspective. The height of the viewpoint would ascension as the object is brought closer to the pic plane, and vice versa.

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Question xx: At any point (10, y) on the boundary of the circle with radius r satisfies the equation f_circumvolve (ten,y)=0. If the point is in the interior of the circle, the circle function is negative while if the point is outside the circle the, circle function is ___

1. Positive
2. Too negative
3. May exist positive or negative
4. None of the in a higher place mentioned

Answer: a. Positive

Caption:

With reference to circumvolve equation fcircle (ten, y) = 0. If the point is in the interior of the circle, the circle office is negative while if the betoken is outside the circle the, circumvolve function is positive.

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