ASVAB-SECTION-3 Online Practice Questions and Answers
If a first class lever with a resistance arm measuring 2 feet and an effort arm measuring 8 feet are being used, what's the mechanical advantage?
A. 2
B. 4
C. 6
D. 1
In the figure above, if the fulcrum supporting the lever is moved closer to the cat, the cat will be __________.
A. easier to lift and will move higher
B. harder to lift but will move higher
C. easier to lift but will not move as high
D. harder to lift and will not move as high
In the figure above, for each complete revolution the cam makes, how many times will the valve open?
A. 1
B. 6
C. 3
D. 2
In the figure above, assume the valves are all open.
Which valves need to be closed for the tank to fill up completely?
A. 3 and 4 only
B. 3, 4, and 5
C. 2, 3, and 4
D. 4 only
Using a runner gives you a mechanical advantage of ___________.
A. 4
B. 2
C. 3
D. 1
For the valve shown in the figure above to open once each second, the cam must revolve at a rate of __________.
A. 6 rpm
B. 10 rpm
C. 15 rpm
D. 3 rpm
In the diagram in question 4, if the wheel on the left turns clockwise, which way will the wheel on the right turn?
A. Clockwise
B. Counterclockwise
C. Counter-counterclockwise
D. Unable to tell from the information given
In the illustration below, two 30-lbs blocks are attached to the ceiling using ropes, as shown.
Which of the following statements is true?
A. All the ropes are under equal amounts of tension.
B. The rope supporting Block A is under 2x the tension of the ropes holding Block B.
C. The ropes supporting Block B are under 1/3 of the tension of the rope holding Block A.
D. The rope holding Block A is under 1/3 of the tension of the ropes holding Block B.
If an object is in equilibrium, it is said to be __________.
A. at rest
B. moving
C. at rest or moving at a constant speed and in a straight line
D. moving upward only
