General Concepts 3 min read
Hitching and weight transfer
Hitching affects both vertical and horizontal force relations between tractor and implement. Vertical effects on the tractor are of special…
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General Concepts 2 min read
Tractor Hitching, Traction, And Testing
Tractors frequently serve as the power source for field machines. A hitch connects the implement to the tractor. The tractor…
General Concepts 4 min read
Map coordination
The data inputs to a FIS can be in a variety of formats. Manual soil samples are taken at grid…
General Concepts 2 min read
Geospacial Information System
As used in SSCM, a geospacial information system, or GIS, is a computer-based system for storing, analyzing, and displaying spatially-referenced…
General Concepts 3 min read
Global Positioning System
Development of the global positioning system, or GPS, began in 1973 under the leadership of Colonel Bradford Parkinson of the…
General Concepts 3 min read
Precision Agriculture
Sensors A sensor is a device used to measure some quantity of interest and produce a signal (usually electrical) representing…
General Concepts 4 min read
Motor Nameplate Information
Design and rating standards developed by the National Electrical Manufacturer’s Association (NEMA) permit the comparison of motors from different manufacturers.…
General Concepts 1 min read
Dual-Voltage Motors
Many motors are designed to be operated at either of two different voltages. For example, the three-phase motors of Figure …
General Concepts 2 min read
Three-Phase Induction Motors
Single-phase motors become impractical in sizes much above 7.5 kW (10 hp) and, for larger power requirements, three-phase motors become…
General Concepts 2 min read
Repulsion-start, induction-run motors
A repulsion-start, induction-run motor is illustrated schematically in Figure 3.8. Unlike the previous induction motors, the repulsion-start motor does not…
General Concepts 1 min read
Two-value-capacitor, induction-run motors
A schematic diagram of a two-value-capacitor, induction-run motor (also called a capacitor-start, capacitor-run motor) is shown in Figure 3.7. The…
General Concepts 1 min read
Capacitor-start, induction-run motors
A capacitor-start, induction-run motor is illustrated in Figure 3.6a. An electrolytic capacitor has been inserted in series with the starting…
