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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.

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  1. A car engine produces 150 kW of power. How much work does it do in 30 seconds?

    Answer: 4,500 kJ

    Work = Power × Time = 150,000 W × 30 s = 4,500,000 J = 4,500 kJ.

  2. In a computer network, what does the OSI model's 'Transport' layer primarily handle?

    Answer: End-to-end communication and data segmentation

    The Transport layer (Layer 4) manages end-to-end communication, reliability, and segmentation of data using TCP or UDP.

  3. What type of force acts on an object moving in a circular path, directed toward the center?

    Answer: Centripetal force

    Centripetal force acts toward the center of the circular path, keeping the object in its curved trajectory.

  4. Which sorting algorithm has an average time complexity of O(n log n)?

    Answer: Merge Sort

    Merge Sort divides the array recursively and merges sorted halves, achieving O(n log n) average and worst-case time complexity.

  5. A beam is supported at both ends and loaded in the center. Where does the maximum bending moment occur?

    Answer: At the center of the beam

    For a simply supported beam with a central point load, the maximum bending moment occurs at the midpoint of the beam.

  6. What is the function of a capacitor in a DC circuit after it is fully charged?

    Answer: It blocks DC current flow

    A fully charged capacitor blocks DC current because no further charge can accumulate across it under steady-state DC conditions.

  7. Which type of software testing verifies that individual components or functions work correctly in isolation?

    Answer: Unit testing

    Unit testing validates individual functions or modules in isolation to confirm each piece of code behaves as expected.