Search results
Results From The WOW.Com Content Network
In electrical engineering, three-phase electric power systems have at least three conductors carrying alternating voltages that are offset in time by one-third of the period. A three-phase system may be arranged in delta (∆) or star (Y) (also denoted as wye in some areas, as symbolically it is similar to the letter 'Y').
Three-phase electric power (abbreviated 3ϕ [1]) is a common type of alternating current (AC) used in electricity generation, transmission, and distribution. [2] It is a type of polyphase system employing three wires (or four including an optional neutral return wire) and is the most common method used by electrical grids worldwide to transfer ...
Can be extended to 1–2–3 or 1–2–3–4, etc. depending on a combination of racing series and team size. 107% rule Often used in Formula One or other racing series, it is a rule where the driver must qualify the car within 107% of the polesitter's time to be allowed to compete. Variations of this may be used to monitor drivers and warn ...
The terms , [2] are also used, [4] as are the terms back EMF constant, [5] [6] or the generic electrical constant. [2] In contrast to K v {\displaystyle K_{\text{v}}} the value K e {\displaystyle K_{\text{e}}} is often expressed in SI units volt–seconds per radian (V⋅s/rad), thus it is an inverse measure of K v {\displaystyle K_{v}} . [ 7 ]
The constants listed here are known values of physical constants expressed in SI units; that is, physical quantities that are generally believed to be universal in nature and thus are independent of the unit system in which they are measured.
The 107% rule is a sporting regulation affecting Formula One racing qualifying sessions.During the first phase of qualifying, if the circuit is dry, any driver who is eliminated in the first qualifying session and fails to set a lap within 107% of the fastest time in that session will not be allowed to start the race without permission from the race stewards.
Formula E is the highest class of competition for single-seat, electrically powered racing cars, which held its inaugural season in 2014–15.Conceived in 2012, the championship was intended by the FIA to serve as an R&D platform for the electric vehicle and promote interest in EVs and sustainability. [1]
Between 1995 and 2000, cars using this 3.0 L engine formula, imposed by the FIA, produced a constant power range (depending on engine type and tuning), varying between 600 hp and 815 hp. Most Formula One cars during the 1997 season comfortably produced a consistent power output of between 665–760 hp (495.9–566.7 kW), depending on whether a ...