Mechanical Engineering Quiz on Shafts and Gears

A rotating member that transmits power, typically connected to a motor or engine.

A stationary member that supports a rotating shaft, preventing it from moving.

A long, horizontal shaft that transmits power to other shafts or machines.

A shaft located between a line shaft and a driven shaft, often used to change the direction of rotation.

A self-locking screw is a type of screw that will not loosen under vibration or load. This is due to its unique thread design, which creates a high friction force between the screw and the mating hole.

The speed at which a rotating shaft will experience maximum vibration due to unbalanced forces. At this speed, the shaft's natural frequency matches the frequency of the unbalanced forces.

The combined shock and fatigue factor is used to account for both sudden loads and repeated stress on a shaft. It is a safety factor applied to the computed bending moment to ensure the shaft's durability.

The maximum amount of deflection (upward or downward movement) allowed for a bevel gear. Exceeding this limit can lead to improper meshing and premature wear.

The maximum stress a ductile ferrous material can withstand in shear before permanent deformation occurs.

The ability of a material to withstand a force without breaking.

The capacity of a material to deform elastically under a tensile load and return to its original shape after the load is removed.

A material's ability to deform permanently under stress.

The tendency of a material to break under stress without significant deformation.

The energy associated with a material's position or configuration.

The energy of motion.

The sum of potential and kinetic energy, representing the total energy of a system.

The outer edge of a screw thread, farthest from the cylinder or cone it extends from.

A type of wire commonly used for springs, known for its durability and resistance to high temperatures.

The angled surface connecting the crest to the root of a screw thread.

This type of wire is ideal for general-purpose springs due to its good balance of strength and flexibility.

Used in springs operating under high stress conditions, this wire provides exceptional strength and resistance to fatigue.

The distance between two consecutive points where a screw thread helix intersects.

The angle between the individual flanks of a threaded screw and its axis. Determines how the thread engages.

A common material for springs designed for everyday applications, known for its strength and cost-effectiveness.

This type of steel wire is used for creating elevator ropes that are not used for hoisting, ideal for stationary applications.

A standard metric screw thread series used in general-purpose equipment and mechanical fasteners.

A chamfer is a beveled edge created on bolts and screw heads, typically at an angle of 45 degrees.

A special type of steel wire used for creating ropes that can handle significant weight loads, ideal for passenger and freight elevators.

Nuts are countersunk at an included angle of 120 degrees to create a countersunk hole.

A metal alloy known for its strength and resistance to corrosion, often used for elevator ropes and stationary guy ropes.

A type of wire used for manufacturing ropes for various purposes, including hoisting, towing, and securing.

The surface where the thread meets the base of the cylinder or cone.

A surface treatment for high-speed steel that creates a hard and wear-resistant surface by diffusing nitrogen into the steel.

The angle between the face of a cutting tool and a line perpendicular to the direction of the cut. It affects the chip thickness and the cutting force.

The recommended lubricant for chain drives, providing a smooth and long-lasting operation.

The distance between two sprockets in a chain drive system. It influences chain tension and wear. A long center distance can lead to excessive tension.

The allowance is negative when the hole is smaller than the shaft, resulting in a tight fit that requires force to assemble.

The ratio of the lateral strain to the axial strain in a material subjected to tensile or compressive stress.

The smallest area at the point of fracture in a tensile specimen, divided by the original area, represents the percentage reduction in cross-sectional area.

The product of the resultant force acting on a body and the time for which it acts. It represents the change in linear momentum of the body.

A type of steel with a high carbon content, giving it high strength and hardness, making it ideal for tools and dies.

The ability of a metal to be deformed considerably without rupture, meaning it can be hammered or rolled without breaking.