Mechanical Aptitude and Principles Flashcards
7 cards from real Apprenticeship Exam 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 Aptitude and Principles flashcards as text
Which type of bearing is best suited to handle both radial loads and axial (thrust) loads simultaneously?
Answer: Tapered roller bearing
Tapered roller bearings use angled rolling elements that allow them to handle both radial (perpendicular) and axial (along the shaft) loads at the same time.
A standard bolt with right-hand threads will advance into a nut when turned:
Answer: Clockwise
Right-hand threads follow the 'righty-tighty' rule — rotating clockwise advances the bolt into the nut.
In a piping system, a reducer fitting is used to:
Answer: Connect pipes of two different diameters
A reducer fitting physically connects two pipe sections of different diameters, allowing the system to transition from one pipe size to another.
Pascal's Law, as applied in hydraulic systems, states that:
Answer: Pressure applied to a confined fluid is transmitted equally in all directions
Pascal's Law states that pressure applied to a confined, incompressible fluid is transmitted undiminished equally in all directions throughout the fluid.
What is the primary purpose of lubrication in mechanical systems?
Answer: To reduce friction, cool, and clean moving surfaces
Lubrication creates a film between moving parts that reduces friction, dissipates heat, and helps remove contaminants, extending component service life.
Compared to flat belt drives, V-belt drives provide better power transmission primarily because:
Answer: Their V-shape creates a wedging action inside the pulley groove for increased grip
V-belts wedge into matching grooved pulleys, creating a self-reinforcing grip that allows higher power transmission with less slippage than flat belts.
The primary purpose of torquing a fastener to a specified value is to:
Answer: Create a specific, controlled clamping force to hold parts securely together
Torquing to specification creates a precise and repeatable clamping force that holds joint components together firmly, ensuring reliable and consistent joint integrity.