Motor production: Speed, Torque and Horsepower

the three factors that determine the type of work a motor can produce our speed torque and horsepower speed is defined as how fast the motor performs its work for example a shaft can rotate slowly or quickly the typical units of measurement for rotational motor speed are revolutions per minute or rpm work is defined as a force applied over a distance in the case of flywheels wenches and motors the work is called torque torque is a special type of work that produces rotation Tork occurs when a force acts on a radius typical units of measurement for torque are pound foot the tork Illustrated here is equal to 1 pound foot horsepower is defined as the rate at which work is accomplished years ago before motors were invented most work was accomplished manually it was estimated that one horse could accomplish approximately thirty three thousand pound foot of work per minute and thus the term horsepower was born in modern terms horsepower is simply another unit of measurement for power and can be translated into watts BTUs joules or any unit of power units that measure motor power are typically in horsepower or watts you can manipulate the connection among speed torque and horsepower by understanding how they are related the work accomplished here the torque is represented by the weight moving along the conveyor if torque remains constant speed and horsepower are proportional as the speed or RPM increases horsepower increases to maintain constant torque if speed decreases horsepower decreases to maintain constant torque let's say we wish to keep torque constant but want to increase the production of barrels if the torque or number of barrels on the conveyor belt remains constant but speed increases then the horsepower of the motor also increases in other words a more powerful motor is required to produce the same amount of torque more quickly similarly the opposite is true if we wish torque to remain constant and decrease speed then the horsepower of the motor also decreases if speed remains constant then torque and horsepower are proportional as the torque increases horsepower also increases to maintain constant speed as the torque decreases horsepower also decreases to maintain constant rpm let's say we want production to increase but the speed of the conveyor to remain constant if torque increases horsepower also increases to compensate this means a more powerful motor is needed to produce more torque at the same speed similarly the opposite is true if we wish speed to remain constant and decrease torque then horsepower also decreases if horsepower remains constant then speed and torque are inversely proportional as the torque increases speed decreases to maintain constant horsepower as torque decreases speed must increase to maintain constant horsepower let's say we want the horsepower of our motor to remain constant but wish to increase the torque if torque increases the speed of the conveyor decreases so that the horsepower required of the motor remains constant similarly the opposite is true if the torque decreases the speed of the conveyor increases and the horsepower generated by the motor remains constant

Channel: Engineering Technology Simulation Learning Videos

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Keywords: Engineering, simulations, free, educational, materials, learning, videos, engineering, training, Revolutions Per Minute (Unit Of Angular Frequency), Torque (Dimension), Speed (Dimension), Horsepower (Unit Of Power), Manufacturing (Industry), Motor, Electric Motor (Engine Category), Computer

Id: gpesDF6hzn4

Length: 4min 48sec (288 seconds)

Published: Fri Jun 05 2015