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The truck weighed 1 short ton (0.91 t) and featured a four-cylinder engine, open cab and chain drive. Its wheels had wooden spokes and rims, while the steel tires were 1.5 inches (38 mm)x5 inches (130 mm) wide. [4] Avery figured farmers could get the most use out of the machines during the harvest season.
Generally, a thermal wheel will be selected for face velocities between 1.5 and 3.0 metres per second (4.9 and 9.8 ft/s), and with equal air volume flow rates, gross "sensible" efficiencies of 85% can be expected. Although there is a small energy requirement to rotate the wheel, the motor energy consumption is usually low and has little effect ...
The HVAC industry was historically regulated by the manufacturers of HVAC equipment, but regulating and standards organizations such as HARDI (Heating, Air-conditioning and Refrigeration Distributors International), ASHRAE, SMACNA, ACCA (Air Conditioning Contractors of America), Uniform Mechanical Code, International Mechanical Code, and AMCA ...
An AC motor is an electric motor driven by an alternating current (AC). The AC motor commonly consists of two basic parts, an outside stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft producing a second rotating magnetic field. The rotor magnetic field ...
For example; a single-phase motor with 3 north and 3 south poles, having 6 poles per phase, is a 6-pole motor. A three-phase motor with 18 north and 18 south poles, having 6 poles per phase, is also a 6-pole motor. This industry standard method of counting poles results in the same synchronous speed for a given frequency regardless of polarity.
Transplanters greatly reduce time required to transplant seedlings compared to manual transplanting. Among the crops that are transplanted with transplanters are strawberries, vegetables, tomatoes, cabbages, tobacco and rice. Semi-automatic mechanical transplanters are a common type, which can be self-propelled, or towed by a tractor at a low ...
According to the book The Men Who Stare at Goats by journalist Jon Ronson, Channon spent time in the 1970s with many of the people in California credited with starting the Human Potential Movement, and subsequently wrote an operations manual for a First Earth Battalion. The manual was a 125-page mixture of drawings, graphs, maps, polemical ...
A Happy Seeder is a no-till planter, towed behind a tractor, that sows (plants) seeds in rows directly without any prior seedbed preparation. It is operated with the PTO of the tractor and is connected to it with three-point linkage. It consists of a straw managing chopper and a zero till drill that makes it possible to sow new crop in the ...