Mechanical Comprehension Flashcards
7 cards from real TALENTLENS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Mechanical Comprehension flashcards as text
A pneumatic cylinder uses compressed air at 100 PSI acting on a 3-square-inch piston. What force does it exert?
Answer: 300 lbs
Force = Pressure × Area = 100 PSI × 3 in² = 300 lbs.
A double-block-and-tackle system has two pulleys on a fixed block and two on a moving block. What is its ideal mechanical advantage?
Answer: 4
A block-and-tackle with 4 rope segments supporting the load has an IMA of 4.
A shaft transmits power through a belt drive. If the belt slips, what is the most likely effect on the driven pulley?
Answer: The driven pulley slows down or stops
Belt slip reduces friction force, so less torque and speed are transferred to the driven pulley.
A structural column is most resistant to buckling when it is:
Answer: Shorter and stockier
Shorter, stockier columns have a smaller slenderness ratio and are far more resistant to buckling under compressive loads.
Heat is transferred from a hot stove burner to a pan sitting on it primarily by:
Answer: Conduction
Direct contact between the burner and the pan transfers heat primarily through conduction.
A wedge is driven under a heavy object to lift it. Which wedge requires less driving force for the same lift?
Answer: A long, gradual wedge
A long gradual wedge has a greater mechanical advantage (longer slope for the same rise), requiring less driving force.
An object is placed on a rotating platform. As the platform spins faster, which direction does the object tend to move?
Answer: Away from the center (outward)
Due to inertia, the object tends to move outward (centrifugal tendency) as rotational speed increases.