UGC NET CS 2015 Jun - III

Question 11

Give the number of principal vanishing point(s) along with their direction for the standard perspective transformation:

• Only one in the direction K
• Two in the directions I and J
• Three in the directions I, J and K
• Only two in the directions J and K

Question 12

Consider a triangle A(0,0), B(1,1) and C(5,2). The triangle has to be rotated by an angle of 458 about the point P(21, 21). What shall be the coordinates of the new triangle?

• A'=(1,√2-1) ,B'=(-1,2√2-1),C'=(3√2-1,(9/2)√2-1)

• A'=(1,√2-1) ,B'=(2√2-1,-1),C'=(3√2-1,(9/2)√2-1)

• A'=(-1,√2-1) ,B'=(-1,2√2-1),C'=(3√2-1,(9/2)√2-1)

• A'=(√2-1,-1) ,B'=(-1,2√2-1),C'=(3√2-1,(9/2)√2-1)

Question 13

The process of dividing an analog signal into a string of discrete outputs, each of constant amplitude, is called:

• Strobing
• Amplification
• Conditioning
• Quantization

Question 14

Which of the following is not a basic primitive of the Graphics Kernel System (GKS)?

• POLYLINE
• POLYDRAW
• FILL AREA
• POLYMARKER

Question 15

Which of the following statement(s) is/are incorrect ?

• Mapping the co-ordinates of the points and lines that form the picture into the appropriate co-ordinates on the device or workstation is known as viewing transformation.
• The right-handed cartesian co-ordinates system in whose co-ordinates we describe the picture is known as world co-ordinate system.
• The co-ordinate system that corresponds to the device or workstation where the image is to be displayed is known as physical device co-ordinate system
• Left - handed co-ordinate system in which the display area of the virtual display device corresponds to the unit (|x|) square whose lower left-hand corner is at the origin of the co-ordinate system, is known as normalized device co-ordinate system.

Question 16

Match the following:

List - I	List - II
(a) Flood Gun	(i)An electron gun designed to flood the entire screen with electrons.
(b)Collector	(ii)Partly energised by flooding gun, stores the charge generated by the writing gun.
(c)Ground	(iii)Used to discharge the collector.
(d)Phosphorus grains	(iv)Used in memory - tube display and similar to those used in standard CRT.
(e)Writing Gun System	(v)Used in memory - tube display and basically the same as the electron gun used in a conventional CRT.

codes:

	(a)	(b)	(c)	(d)	(e)
(1)	(i)	(ii)	(iii)	(iv)	(v)
(2)	(ii)	(iii)	(i)	(iv)	(v)
(3)	(iii)	(i)	(ii)	(v)	(iv)
(4)	(iv)	(v)	(i)	(ii)	(iii)

• (1)
• (2)
• (3)
• (4)

Question 17

Minimal deterministic finite automaton for the language L = {0ⁿ | n ≥ 0, n ≠ 4} will have:

• 1 final state among 5 states
• 4 final states among 5 states
• 1 final state among 6 states
• 5 final states among 6 states

Question 18

The regular expression corresponding to the language L where L = { x ϵ {0, 1}*|x ends with 1 and does not contain substring 00 } is:

• (1 + 01) * (10 + 01)
• (1 + 01) * 01
• (1 + 01) * (1 + 01)
• (10 + 01) * 01

Question 19

The transition function for the language L = {w|n_a (w) and n_b(w) are both odd} is given by: δ (q₀, a) = q₁ ; δ (q₀, b) = q₂ δ (q₁, a) = q₀ ; δ (q₁, b) = q₃ δ (q₂, a) = q₃ ; δ (q₂, b) = q₀ δ (q₃, a) = q₂ ; δ (q₃, b) = q₁ The initial and final states of the automata are:

• q₀ and q₀respectively
• q₀ and q₁respectively
• q₀ and q₂respectively
• q₀ and q₃respectively

Question 20

The clausal form of the disjunctive normal form ¬A ∨ ¬B ∨ ¬C ∨ D is:

• A ∧ B ∧ C ⇒ D
• A ∨ B ∨ C ∨ D ⇒ true
• A ∧ B ∧ C ∧ D ⇒ true
• A ∧ B ∧ C ∧ D ⇒ false