ASVAB ASVAB Certifications ASVAB-SECTION-3 Questions & Answers

• Question 121:

  

  With one complete revolution of the cable winch shown above, the load will move __________.

  A. 12 inches

  B. 6 inches

  C. 24 inches

  D. 36 inches

  Correct Answer: C

  One revolution of the winch will move the weight 24 inches, the circumference of the winch drum.

• Question 122:

  

  The amount of force (F) needed to balance the lever in the figure above is most nearly ___________.

  A. 15 pounds

  B. 13 pounds

  C. 7.5 pounds

  D. 20 pounds

  Correct Answer: B

  To determine the amount of force exerted by the cats, first multiply the length of the resistance arm (as it applies to the cat) by the weight of each cat and add the products together. The 10-pound cat is supported by the entire weight of the resistance arm, so 5 × 10 = 50. The 5-pound cat is being supported by 3 feet of the resistance arm, so 3 × 5 = 15. Add them up: 50 + 15 = 65. This number is equal to the length of the resistance arm times effort (force) or 65 = 5F. To isolate F, divide both sides by 5: 65 ÷ 5 = 5F ÷ 5 or 13 = F.

• Question 123:

  

  The steel plate above is held in place by different machine screws, each indicated by different symbols. How many different types of machine screws have been used?

  A. 6

  B. 15

  C. 5

  D. 9

  Correct Answer: A

  There are 6 different symbols, so 6 different types of machine screws were used.

• Question 124:

  

  The try-cock in the schematic above measures ___________.

  A. temperature of water

  B. pressure of water

  C. pressure of steam buildup

  D. level of water

  Correct Answer: D

  Try-cocks measure water level. Water seeks a level throughout a system, so in the schematic, the try-cock

  correctly indicates the water level.

• Question 125:

  Universal joints are used to ___________.

  A. connect ball bearings

  B. fix two shafts so they don't pivot or rotate

  C. connect shafts in a U-shape

  D. couple two shafts set at different angles

  Correct Answer: D

  Universal joints are used to connect shafts that aren't in the same plane.

• Question 126:

  The force that causes clothes from the dryer to stick together is called ___________.

  A. gravity

  B. magnetism

  C. friction

  D. static electricity

  Correct Answer: D

  Static electricity causes materials to "stick" together this way.

• Question 127:

  An aneroid barometer measures ___________.

  A. atmospheric pressure

  B. water pressure

  C. hydraulic-fluid pressure

  D. the ambient temperature

  Correct Answer: A

  An aneroid barometer measures atmospheric pressure.

• Question 128:

  

  If Gear A is revolving in a clockwise manner, as seen in the figure above, Gear B ___________.

  A. remains stationary

  B. revolves in a clockwise manner

  C. revolves in a counterclockwise manner

  D. turns more slowly than Gear A

  Correct Answer: C

  Meshed gears always turn in opposite directions.

• Question 129:

  Springs are used for the following purposes EXCEPT ___________.

  A. to store energy for part of a mechanical cycle

  B. to force a mechanical component to maintain contact with another component

  C. to reduce shock or impact

  D. to increase the weight of a mechanism

  Correct Answer: D

  Springs are used for all the listed purposes except to add weight.

• Question 130:

  

  The floats in Tubes A and B measure specific gravity.

  Which tube contains the liquid with the higher specific gravity?

  A. Tube A

  B. Tube B

  C. It can't be determined.

  D. Both Tube A and Tube B have the same specific gravity.

  Correct Answer: B

  Specific gravity is a comparison between the weight of a liquid and the weight of water. The liquid with the higher specific gravity will have a float that rises higher.