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Physics Wallah Limited (commonly known as Physics Wallah; or simply PW) is an Indian multinational educational technology company headquartered in Noida, Uttar Pradesh.The company was founded by Alakh Pandey in 2016 as a YouTube channel aimed at teaching the physics curriculum for the Joint Entrance Examinations (JEE).
The Pratt & Whitney Canada PW800 is a series of turbofan engines in the 10,000–20,000 lbf (44–89 kN) thrust class, manufactured by Pratt & Whitney Canada.Intended for the regional jet and business jet market, the gear-less PW800 shares a common core with the larger, geared PW1000G.
Prayas (Energy Group) is an Indian research and analysis organisation working in the area of energy policy. It is part of a non-governmental charitable trust called Prayas (long name is Initiatives in Health, Energy and Parenthood ) located in Pune , India .
The PW530 has a single stage fan, driven by a 2-stage LP turbine, supercharging a 2A/1CF axial-centrifugal HP compressor, driven by a single stage HP turbine. Although similar in configuration, the PW535 has a booster stage, mounted on the LP shaft behind the fan, to increase overall pressure ratio and core flow.
Under his leadership, the Energy Group within Prayas (PEG), which started with three people, expanded to a team of over 15 researchers from a variety of backgrounds. Girish had the ability to connect with a wide range of professionals, which attracted senior researchers as well as young engineers to join Prayas. [12]
The PW 300 series has been developed in partnership with MTU who are responsible for the low pressure turbine. The first variant, the PW305A, has the following configuration and was designed with a core flexible enough for engines with take-off thrusts from 20 kN to 31 kN (4,500 to 7,000 lb): a single-stage fan driven by a three-stage low pressure turbine, supercharging a four-stage axial ...
The Pratt & Whitney PW4000 is a family of dual-spool, axial-flow, high-bypass turbofan aircraft engines produced by Pratt & Whitney as the successor to the JT9D.It was first run in April 1984, was FAA certified in July 1986, and was introduced in June 1987.
Prayas Residential School Bilaspur (since 2015) is a school for tribal students in Bilaspur, Chhattisgarh, India. This school is completely free for tribal areas students. Prayas School is part of Foundation Prayas. Chief Minister's instructions started: The Chief Secretary gave the guidance given to children in Prayas Residential School