Mechanical Comprehension

15 Questions

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Mechanical Comprehension


Questions and Answers
  • 1. 
    A valve is used to perform which of the following functions?
    • A. 

      Increase the temperature of a gas

    • B. 

      Aid evaporation of a liquid

    • C. 

      Control the flow of a liquid

    • D. 

      Decrease the density of a gas

  • 2. 
    Which term below describes the opposite of an increase in speed?
    • A. 

      Velocity

    • B. 

      Deceleration

    • C. 

      Acceleration

    • D. 

      Rotation

  • 3. 
    Which principle of mechanical motion is used in the design of a roller coaster?
    • A. 

      Momentum

    • B. 

      Friction

    • C. 

      Acceleration

    • D. 

      All of the above

  • 4. 
    A block of steel has a density of 0.29 pounds per cubic inch.  If the block has dimensions of 1 inch by 1 inch by 3 inches, what is the weight?
    • A. 

      0.29 pounds

    • B. 

      0.36 pounds

    • C. 

      0.87 pounds

    • D. 

      0.99 pounds

  • 5. 
    Which mechanical components are typically used between a wheel and an axle to reduce friction?
    • A. 

      Springs

    • B. 

      Bearings

    • C. 

      Hinges

    • D. 

      Levers

  • 6. 
    • A. 

      Lift objects

    • B. 

      Cut metals

    • C. 

      Cut wood

    • D. 

      Crunch metal

  • 7. 
    • A. 

      Pulley

    • B. 

      Hoist

    • C. 

      Wheel and axle

    • D. 

      Lever

  • 8. 
    • A. 

      Contract

    • B. 

      Expand

    • C. 

      Bend

    • D. 

      Harden

  • 9. 
    If a train moves at 70 MPH and travels for 90 minutes, how many miles does it travel?
    • A. 

      105 miles

    • B. 

      105 miles

    • C. 

      109 miles

    • D. 

      630 miles

  • 10. 
    Water is flowing into a tank through pipe A at 6 gallons per minute and  through pipe B at 7 gallons per minute.  The water is flowing out of the tank through pipe C at 8 gallons per minute.  How much more water will be in the tank at the end of 5 minutes.
    • A. 

      15 gallons

    • B. 

      25 gallons

    • C. 

      32 gallons

    • D. 

      50 gallons

  • 11. 
    To lift a 600 pound piano, Tom and Jerry decide to use a plank placed under one end of the piano.  The plank is 3 feet long.  If a fulcrum is placed under the plank, one foot away from the piano, how much force must be applied to the plank to lift the piano?
    • A. 

      100 pounds

    • B. 

      125 pounds

    • C. 

      140 pounds

    • D. 

      150 pounds

  • 12. 
    A garden hose is used to siphon the water out of an above-ground swimming pool.  What makes the water flow out of the pool and through the garden hose?
    • A. 

      Weight of the water

    • B. 

      Water pressure

    • C. 

      Air pressure

    • D. 

      Air and water pressure in combination

  • 13. 
    Which action describes a clock pendulum swaying back and forth?
    • A. 

      Gravity

    • B. 

      Periodic motion

    • C. 

      Acceleration

    • D. 

      Velocity

  • 14. 
    A wrench is used to turn a bolt that has 20 threads per inch.  After 15 complete turns of the wrench, the bolt will have moved:
    • A. 

      1/8 inch

    • B. 

      1/4 inch

    • C. 

      3/4 inch

    • D. 

      2/3 inch

  • 15. 
    Water is flowing into a tank at the rate of 180 gallons per minute.  However, the tank has a leak, and water is leaking out at the rate of 2 gallons per second.  How long will it take to add 120 gallons?
    • A. 

      1 minute

    • B. 

      2 minutes

    • C. 

      3 minutes

    • D. 

      4 minutes