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Psychometric Test Mechanical Reasoning Flashcards

6 cards from real Psychometric Test 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 spring stretches 5 cm when a 10 N force is applied. How much will it stretch with a 25 N force (assuming Hooke's Law)?

    Answer: 12.5 cm

    By Hooke's Law, extension is proportional to force: 25/10 × 5 = 12.5 cm.

  2. Which type of joint allows the most range of motion in the human body?

    Answer: Ball-and-socket joint

    Ball-and-socket joints (like the hip and shoulder) allow movement in all planes, providing the greatest range of motion.

  3. Three resistors of 6 Ω each are connected in parallel. What is the total resistance?

    Answer: 2 Ω

    For identical resistors in parallel: total resistance = R/n = 6/3 = 2 Ω.

  4. A hydraulic press has a small piston with area 2 cm² and a large piston with area 20 cm². A force of 10 N on the small piston produces how much force on the large piston?

    Answer: 100 N

    Pascal's law: Force is amplified by the ratio of areas — 10 N × (20/2) = 100 N.

  5. When a moving car brakes suddenly, passengers lean forward because of:

    Answer: Inertia — their bodies tend to keep moving forward

    Newton's first law (inertia) states that objects in motion tend to stay in motion; passengers continue forward as the car stops.

  6. A simple circuit has a 12V battery and a single 4 Ω resistor. What is the current flowing through the circuit?

    Answer: 3 A

    Ohm's Law: I = V/R = 12/4 = 3 A.