Computer Graphics Basics Questions

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11.

In LCD, the refresh rate of the screen is

A

60 frames/sec

B

80 frames/sec

C

30 frames/sec

D

100 frames/sec

Correct Answer: A

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12.

Random-scan system mainly designed for

A

Realistic shaded screen

B

Fog effect

C

Line-drawing applications

D

Only b

Correct Answer: C

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13.

The primary output device in a graphics system is_________

A

Scanner

B

Video monitor

C

Neither a nor b

D

Printer

Correct Answer: B

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14.

On a black and white system with one bit per pixel, the frame buffer is commonly called as

A

Pix map

B

Multi map

C

Bitmap

D

All of the mentioned

Correct Answer: C

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15.

Aspect ratio means

A

Number of pixels

B

Ratio of vertical points to horizontal points

C

Ratio of horizontal points to vertical points

D

Both b and c

Correct Answer: D

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16.

__________ allows screen positions to be selected with the touch of a finger.

A

Touch panels

B

Image scanner

C

Light pen

D

Mouse

Correct Answer: A

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17.

What is the disadvantage of the light pen?

A

It

B

They cannot detect positions

C

Accurate reading

D

Cannot detect positions within black areas

Correct Answer: D

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18.

________ is used in graphics workstation as input devices to accept voice commands.

A

Touch panels

B

Speech recognizers

C

Only a

D

All of the mentioned

Correct Answer: B

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19.

What voice the use of voice system?

A

To initiate graphics operation

B

To enter data

C

Neither a nor b

D

Neither a nor b

Correct Answer: D

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20.

When a voice command is given, the system searches the _____________for a frequency-pattern match.

A

Memory

B

Input data

C

Dictionary

D

Hard disk

Correct Answer: C

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