ASVAB FULL PRACTICE TEST 1 MECHANICAL

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ASVAB FULL PRACTICE TEST 1 MECHANICAL

COMPREHENSION EXAM QUESTIONS

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -18 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: Air pressure at sea level is about 15psi. Whats the amount of force exerted on the top of your head, given a surface area of 24square inches.

Answer:

360lbs

Question 2: Do stationary pulleys give mechanical advantage.

Answer:

No, the effort equals the weight of what you're pulling

Question 3: A way to determine the amount of power being used is to

Answer:

Power=work/time

Question 4: Springs used in machines are usually made of

Answer:

Steel

Question 5: An induction clutch works by

Answer:

Magnetism Question 6: If a house key, wooden spoon, a plastic hangar, and a wool jacket are all the same temperature on a cool day, which one feels the coldest

Answer:

The key

Question 7: Equation for pressure

Answer:

P=F/A in²or F=Ain²*P.Question 8: The force produced when a boxers hand hits a heavy bag and "bounces" off it is called

Answer:

Recoil

Question 9: Gears with their teeth together in mesh turn in

Answer:

Opposite directions Question 10: A cubic foot of water weighs about 62.5lbs. If an aquarium is 18ft long, 10ft deep, and 12ft wide, whats the approximate psi on the bottom of the tank?

Answer:

4psi Question 11: How do you determine how many revolutions gear 2(15teeth) makes for every ten revolutions gear 1(25teeth)

Answer:

r=DR/r r=(25*10)/15 r=250/15=50/15=16 2/3

Question 12: A clutch is a type of

Answer:

Coupling Question 13: If a first class lever with a resistance arm measuring 2 feet and an effort arm measuring 8 feet Are being used, whats the mechanical advantage

Answer:

4

Question 14: What is a single block-and-fall used for

Answer:

A way to get mechanical advantage by threading a rope through a pulley or stationary point

Question 15: A single block-and-fall is called a

Answer:

Runner Question 16: A wood tool, a silver tool, and a steel tool are placed in boiling water for cleaning.Which tool will get the hottest the fastest?

Answer:

Silver Question 17: A cubic foot of water weighs about 62.5lbs. If an aquarium is 18ft long, 10ft deep, and 12ft wide, whats the approximate psi on the bottom of the tank? How do you find that.

Answer:

Multiply volume of the aquarium by the weight of the water. Volume=lwh. 18 12

10=2160ft³multiply volume of water by 62.5: 2160

62.5=135000. Surface area of tank is length width. Convert feet to inches then find the area. A=(18ft 12in/ft) (12ft 12in/ft)=216in 144in=31104in². Divide 135000 by 31104in²=4psi

Question 18: If a first class lever with a resistance arm measuring 2 feet and an effort arm measuring 8 feet Are being used, whats the mechanical advantage. How do you find it.

Answer:

MA=8/2=4