FREE Mechanical Aptitude MCQ Question and Answers Flashcards
6 cards from real MECHANICAL APTITUDE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 FREE Mechanical Aptitude MCQ Question and Answers flashcards as text
A wheelbarrow is an example of which class of lever?
Answer: Second-class lever
A wheelbarrow is a second-class lever because the load is between the fulcrum (wheel) and the effort (handles).
If two gears are meshed together and the driving gear has 20 teeth while the driven gear has 40 teeth, what is the gear ratio?
Answer: 1:2
The gear ratio is driving teeth to driven teeth, which is 20:40 or 1:2.
What happens to the pressure in a hydraulic system when the area of the output piston is doubled while the input force remains the same?
Answer: Pressure stays the same
Pressure in the system depends on input force divided by input piston area, so changing the output piston area does not affect system pressure.
A block is placed on an inclined plane at 30 degrees. Which force component acts parallel to the surface pulling the block downward?
Answer: mg sin 30°
The component of gravitational force parallel to an inclined surface is mg sin(theta).
Which type of belt drive arrangement is used to reverse the direction of rotation of the driven pulley?
Answer: Crossed belt drive
A crossed belt drive causes the driven pulley to rotate in the opposite direction of the driving pulley.
In a simple pulley system with 4 supporting ropes, approximately how much force is needed to lift a 200 lb load (ignoring friction)?
Answer: 50 lb
With 4 supporting ropes the mechanical advantage is 4, so the required force is 200 / 4 = 50 lb.