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Input is the action of ______.

producing information

instructing hardware

entering data

100%

running a query

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Aspect ratio defines a display's ______.

dots per inch

width relative to its height

depth divided by its length

audio quality

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In determining the quality of a device screen, the contrast ratio is the difference between the ______.

intensity between the brightest white and darkest black

brightness of the hues in the available color spectrum

relationship between the nits and candelas

diagonal width and diagonal height

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A user who requires adaptive devices might rely on OCR technology to ______.

translate the audio from a digital video into on-screen captions

create printable output from voice input

scan printed materials and digitize them for a screen reader or Braille printer

enable them to instruct a program or app using only their feet

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Which

of the following is true for laminar flow?

Viscosity

of fluid doesn’t affect this type of flow

None

of the above is true

occurs in high viscous fluid

The

average velocity of this kind of flow usually more than the average velocity of

turbulent flow

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Which

of the following is true for turbulent flow

Inertial

force dominates over viscous force

✅

None

of the above

❌

Equally

important

❌

Viscous

force dominates over inertial force

❌

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Upper

critical Reynolds number is defined as the

Reynolds

number when the flow is laminar

❌

Reynolds

number when the flow is turbulent

❌

Reynolds

number when the flow changes from laminar to turbulent

✅

Reynolds

number when the flow changes from turbulent to laminar

❌

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There

is a fluid moving with a certain velocity inside a circular pipe. The nature of

flow was found to be laminar. What should be the nature of flow when we replace

the fluid with a lower viscous fluid and increased its flow rate?

The

flow will remain Laminar

Can’t

determine

The

flow will become Turbulent

Viscosity

doesn’t affect the nature of flow

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Which of the following is/are true for turbulent flow

1. Streamlines move parallel to each other

2. Fluid particle moves in a disorganized manner

3. Occurs at low Reynolds Number

4. Viscous effect dominates

Only

and 4

and 3

Only

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A refreshable Braille display uses ______ to translate content into the Braille system.

a 3-D digital monitor

an LCD display

nylon pins or magnets

voice-to-text technology

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