Knowledge 1 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 Knowledge 1 flashcards as text
What type of lever is a pair of scissors?
Answer: First-class lever
Scissors are first-class levers because the fulcrum (the pivot pin) is located between the effort (your hand) and the load (the material being cut).
What is the primary function of a governor in a mechanical system?
Answer: To regulate and limit operating speed
A governor automatically regulates the speed of an engine or machine, preventing it from exceeding a set maximum by adjusting fuel or throttle input.
Which property of a metal describes its ability to be drawn into a wire?
Answer: Ductility
Ductility is the property that allows a material to be stretched or drawn into thin wires without breaking. Copper and gold are highly ductile metals.
In a pulley system, what is the mechanical advantage of a single fixed pulley?
Answer: 1
A single fixed pulley only changes the direction of the force, not its magnitude. The mechanical advantage is 1, meaning the effort required equals the load.
What does a manometer measure?
Answer: Fluid pressure
A manometer is an instrument used to measure the pressure of gases or liquids. It typically uses a column of liquid to indicate pressure differences.
Which gear arrangement reverses the direction of rotation between input and output shafts?
Answer: Spur gear with an idler gear
When an idler gear is placed between two spur gears, it reverses the direction of rotation at the output shaft while the input and output shafts remain parallel.