Topic

Output Devices - Part 1 - Topic Guide and MCQs

Part of Computer > 05 Output Devices - 25 questions, about 12.5 min, with an explanation after every answer.

25
Question count
about 12.5 min
Estimated time
Mixed
Difficulty
02 Nov 2026
Last updated
Quick answer

Output Devices - Part 1 is a topic inside Computer (05 Output Devices). It runs 25 untimed MCQs - roughly 12.5 min - and the review explains every answer once you submit.

Topic introduction

What Output Devices - Part 1 covers

The shape of the set before you start it.

Output Devices - Part 1 sits inside Computer, under the 05 Output Devices lane, and the portal keeps it as one self-contained set: 25 questions, four options each, no clock and a written explanation behind every answer.

Attempt it once to find the gaps, read why each distractor is wrong, then retake the same set a few days later. The questions you miss twice are the ones worth writing down.

Curated by Gurpreet Singh · Punjab Police SI, Rank 2 (713/800) · Founder, House of Aspirants · Read his story →

Question bank

Output Devices - Part 1: all 25 questions

Read the question, pick an option, then open the answer.

  1. A hardware device that receives processed data from a computer and presents it to the user in a meaningful form is called:

    1. Input device
    2. Storage device
    3. Output device
    4. Pointing device
    Show answer

    Answer: (C) Output device

    Explanation: An output device receives processed data from the computer and presents it as text, images, audio, video or printed documents.

  2. Which of the following is an example of an output device?

    1. Projector
    2. Keyboard
    3. Mouse
    4. Scanner
    Show answer

    Answer: (A) Projector

    Explanation: Monitor, Printer, Projector, Speakers and Plotter are examples of output devices.

  3. In the Input → Processing → Output cycle, which component performs the processing?

    1. Monitor
    2. Keyboard
    3. Printer
    4. CPU
    Show answer

    Answer: (D) CPU

    Explanation: In the cycle, data goes from the input device to the CPU (processing) and then to the output device.

  4. Which is the primary (most common) output device of a computer?

    1. Printer
    2. Monitor
    3. Speaker
    4. Plotter
    Show answer

    Answer: (B) Monitor

    Explanation: A Monitor is the primary and most common output device of a computer.

  5. A monitor is also known as:

    1. Visual Display Unit (VDU)
    2. Video Data Unit (VDU)
    3. Visual Data Unit (VDU)
    4. Virtual Display Unit (VDU)
    Show answer

    Answer: (A) Visual Display Unit (VDU)

    Explanation: Monitor is also called the Visual Display Unit (VDU).

  6. CRT stands for:

    1. Cathode Radiation Tube
    2. Colour Ray Tube
    3. Central Ray Tube
    4. Cathode Ray Tube
    Show answer

    Answer: (D) Cathode Ray Tube

    Explanation: CRT stands for Cathode Ray Tube.

  7. In a CRT monitor, which part generates the electron beams?

    1. Deflection Plate
    2. Electron Gun
    3. Face Plate
    4. Glass Envelope
    Show answer

    Answer: (B) Electron Gun

    Explanation: In a CRT, an electron gun generates electron beams that strike the phosphor-coated screen.

  8. In a CRT monitor, phosphor dots of which colours glow to create images?

    1. Red, Yellow and Blue
    2. Red, Green and Blue
    3. Cyan, Magenta and Yellow
    4. Black, White and Grey
    Show answer

    Answer: (B) Red, Green and Blue

    Explanation: Red, Green and Blue (RGB) phosphor dots glow to create images on a CRT screen.

  9. Which of the following is NOT one of the main components of a CRT monitor?

    1. Liquid Crystal Layer
    2. Electron Gun
    3. Deflection Plate
    4. Fluorescent Screen
    Show answer

    Answer: (A) Liquid Crystal Layer

    Explanation: Main components of a CRT are Electron Gun, Deflection Plate, Fluorescent Screen, Glass Envelope and Face Plate; liquid crystals belong to LCD.

  10. LCD stands for:

    1. Light Crystal Display
    2. Liquid Colour Display
    3. Laser Crystal Display
    4. Liquid Crystal Display
    Show answer

    Answer: (D) Liquid Crystal Display

    Explanation: LCD stands for Liquid Crystal Display.

  11. An LCD is a flat-panel display that uses liquid crystals between two layers of:

    1. Polarized glass
    2. Phosphor-coated glass
    3. Metal plates
    4. Mercury cells
    Show answer

    Answer: (A) Polarized glass

    Explanation: LCD uses liquid crystals placed between two layers of polarized glass.

  12. In an LCD monitor, what aligns the liquid crystals?

    1. Electron beam
    2. Ultraviolet light
    3. Electric current
    4. Laser beam
    Show answer

    Answer: (C) Electric current

    Explanation: In LCD, electric current aligns the liquid crystals, which control the light passing through the screen.

  13. LED monitors are improved versions of which monitors?

    1. LCD monitors
    2. CRT monitors
    3. Plasma monitors
    4. DLP monitors
    Show answer

    Answer: (A) LCD monitors

    Explanation: LED monitors are improved versions of LCD monitors (LED is an advanced LCD).

  14. According to the LCD vs LED comparison, an LCD monitor uses which type of backlight?

    1. LED backlight
    2. CCFL backlight
    3. Plasma backlight
    4. Laser backlight
    Show answer

    Answer: (B) CCFL backlight

    Explanation: LCD uses a CCFL backlight, while LED uses an LED backlight.

  15. Compared to an LCD monitor, an LED monitor has:

    1. Higher power consumption and less brightness
    2. Higher power consumption and more brightness
    3. Lower power consumption and less brightness
    4. Lower power consumption and more brightness
    Show answer

    Answer: (D) Lower power consumption and more brightness

    Explanation: LED monitors have lower power consumption and more brightness than LCD monitors.

  16. A Plasma monitor uses small cells filled with:

    1. Liquid crystals
    2. Powdered toner
    3. Noble gases and mercury
    4. Liquid ink
    Show answer

    Answer: (C) Noble gases and mercury

    Explanation: A Plasma Monitor uses small cells filled with noble gases and mercury.

  17. A Plasma display uses:

    1. Liquid crystals
    2. Electron beams
    3. Ionized gas (plasma)
    4. Tiny mirrors
    Show answer

    Answer: (C) Ionized gas (plasma)

    Explanation: Exam Point: Plasma Display uses ionized gas (plasma).

  18. In a Plasma monitor, the plasma emits which type of light that creates images on the screen?

    1. Infrared light
    2. Ultraviolet light
    3. Laser light
    4. Polarized light
    Show answer

    Answer: (B) Ultraviolet light

    Explanation: Electric voltage converts gas into plasma, plasma emits ultraviolet light, and UV light creates images.

  19. Plasma monitors are mainly used for:

    1. Home theatres and large-screen displays
    2. Smartphones
    3. Tablets
    4. Laptops
    Show answer

    Answer: (A) Home theatres and large-screen displays

    Explanation: Plasma monitors are used in home theatres, sports viewing and large-screen displays.

  20. In the comparison of monitors, which monitor is large in size and heavy in weight?

    1. LCD
    2. LED
    3. Plasma
    4. CRT
    Show answer

    Answer: (D) CRT

    Explanation: The comparison table lists CRT as Large in size and Heavy in weight.

  21. According to the comparison table, which two monitors have HIGH power consumption?

    1. CRT and Plasma
    2. LCD and LED
    3. CRT and LCD
    4. LED and Plasma
    Show answer

    Answer: (A) CRT and Plasma

    Explanation: Power consumption: CRT – High, LCD – Medium, LED – Low, Plasma – High.

  22. Which monitor is described as 'Very Thin' and 'Very Light' with 'Low' power consumption?

    1. CRT
    2. LCD
    3. LED
    4. Plasma
    Show answer

    Answer: (C) LED

    Explanation: In the comparison table, LED is Very Thin, Very Light and has Low power consumption.

  23. Which output device projects images, videos and presentations onto a large screen or wall?

    1. Plotter
    2. Monitor
    3. Speaker
    4. Projector
    Show answer

    Answer: (D) Projector

    Explanation: A Projector projects images, videos and presentations onto a large screen or wall.

  24. In DLP Projector, DLP stands for:

    1. Digital Laser Projection
    2. Direct Light Processing
    3. Digital Light Processing
    4. Digital Liquid Panel
    Show answer

    Answer: (C) Digital Light Processing

    Explanation: DLP stands for Digital Light Processing.

  25. A DLP projector works by using:

    1. Liquid crystal display technology
    2. Thousands of tiny mirrors
    3. An electron gun
    4. Cells filled with noble gases
    Show answer

    Answer: (B) Thousands of tiny mirrors

    Explanation: A DLP projector uses thousands of tiny mirrors and is widely used in theatres.

Why it matters

Why Output Devices - Part 1 is worth the hours

Where the marks actually come from.

Output Devices - Part 1 is factual rather than analytical: you either recall it in seconds or you lose the mark to somebody who did. That makes it one of the cheapest sections to convert - a handful of short sittings usually settles the whole cluster.

Exam relevance

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Expected questions

Expected questions from Output Devices - Part 1

What an examiner usually reaches for in this cluster.

Expect one-line recall questions - definitions, stand-for expansions, identifiers and the ordering of things. Practise the wording as well as the concept: these papers test terminology, and the set above uses the same four-option shape they do.

Daily habit

Keep the Expected MCQs habit running

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Previous year questions

Previous Year Questions

How this topic behaves in real papers.

Past papers reuse clusters like this almost verbatim across years and posts. Run the same set until every distractor is familiar - previous-year style questions stop being recall and start being free marks.

Where the previous-year sets live

The portal's previous-year practice runs through the General Knowledge lane and the daily mixed quiz.

Previous Year Questions Daily Quiz
Keep going

Related topics

Neighbouring sets in this subject, then the rest of the portal.

Start practising

Take the Output Devices - Part 1 quiz

25 questions, about 12.5 min, instant scoring and a full review at the end.

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Questions

Output Devices - Part 1 - common questions

Answered against the set as it is published today.

All questions →

How long is the Output Devices - Part 1 quiz?

Output Devices - Part 1 runs 25 untimed questions - about 12.5 min at a steady pace. The set clears at 40% and you can retake it as often as you like.

What kind of questions does Output Devices - Part 1 ask?

The set answers that: each question carries four options and a full explanation, so you learn the wording an examiner uses, not just the fact behind it.

Where else can I practise Computer?

Open the quiz page above, or start from the Computer subject page if you want to drill neighbouring lanes in the same sitting.

Do my scores save?

Scores, bookmarks and streaks need the optional Google sign-in. Opening the set and answering questions does not.