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Technical Aptitude Flashcards

7 cards from real Mettl practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Technical Aptitude flashcards as text

  1. Which gate produces a HIGH output only when ALL inputs are HIGH?

    Answer: AND gate

    An AND gate outputs HIGH (1) only when all of its inputs are HIGH, otherwise it outputs LOW.

  2. A spring with a spring constant of 200 N/m is compressed by 0.05 m. How much potential energy is stored?

    Answer: 0.25 J

    Spring PE = ½kx² = ½ × 200 × (0.05)² = ½ × 200 × 0.0025 = 0.25 J.

  3. In object-oriented programming, what is 'encapsulation'?

    Answer: Bundling data and methods that operate on that data within one unit

    Encapsulation bundles data (attributes) and the methods that act on it into a single class, hiding internal details.

  4. Which material is classified as a semiconductor?

    Answer: Silicon

    Silicon is a semiconductor — its conductivity falls between conductors and insulators and can be controlled by doping.

  5. Two resistors of 6Ω and 3Ω are connected in parallel. What is the total resistance?

    Answer: 2 Ω

    For parallel resistors: 1/R = 1/6 + 1/3 = 1/6 + 2/6 = 3/6 = 1/2, so R = 2 Ω.

  6. What is the main advantage of a screw as a simple machine?

    Answer: It converts rotational force into linear motion with a mechanical advantage

    A screw converts rotational (torque) input into linear motion, providing a large mechanical advantage over short distances.

  7. Which protocol is primarily used for sending email messages?

    Answer: SMTP

    SMTP (Simple Mail Transfer Protocol) is the standard protocol used for sending email between servers.