ABSTRACT: The RF relay control‚ as the name suggests‚ operates at Radio Frequency. The corresponding frequency range varies between 30 kHz & 300 GHz. In this RF system‚ the digital data is represented as variations in the amplitude of carrier wave. This kind of modulation is known as Amplitude Shift Keying (ASK). Transmission through RF is better than IR (infrared) because of many reasons. Firstly‚ signals through RF can travel through larger distances making it suitable
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LEVEL 2 UNITChapter 204 1 Principles of electrical science 11 Level 2 Electrical Installations (Buildings and Structures) This chapter covers: Chapter 1 the principles of electricity the principles of basic electrical circuits the principles of magnetism and electromagnetism the operating principles of a range of electrical equipment the principles of basic mechanics the principles of a.c. theory electrical quantities in Star Delta configurations. LO1 Matter – something that has weight
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performance. If the filter is not cleaned at regular intervals it may become partially clogged with lint and dirt. Operating the system without a filter allows the lint and dirt that is normally trapped by the filter to accumulate on the cooling coil of the air conditioner. This will lead to a loss of air volume‚ possible equipment damage and an expensive cleaning process. That why proper maintenance of air conditioning system required. Preventive Maintenance Preventative maintenance is essential
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and attracts or repels other magnets. Here‚ we will discuss more on electromagnets. An electromagnet is made from a coil of wire that acts as a magnet when a current passes through it but stops being a magnet when the current stops. Often‚ the coil is wrapped around a core of "soft" ferromagnetic material such as steel‚ which greatly enhances the magnetic field produced by the coil. Around a typical bar magnet - or any magnetized object (like the Earth‚ for example) - there are lines of magnetic
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Physics Exam Study Notes By: Faizan Dhalla | SPH3U 1: Forces and Motion * Kinematics: study of motion * Basic types of motion: * Uniform (constant speed in straight line) * Non-uniform * Scalar quantity: with magnitude & no direction * Distance‚ average speed * Vector quantity: with magnitude (arrow above it) & direction (in square brackets after unit) * Position‚ displacement‚ acceleration * Velocity: * Rate of change of position *
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hygrometer was invented by polymath Johann Heinrich Lambert in 1755. Metal-paper coil type[edit] The metal-paper coil hygrometer is very useful for giving a dial indication of humidity changes. It appears most often in very inexpensive devices‚ and its accuracy is limited‚ with variations of 10% or more. In these devices‚ water vapour is absorbed by a salt-impregnated paper strip attached to a metal coil‚ causing the coil to change shape. These changes (analogous to those in a bimetallic thermometer)
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plant in Bangladesh‚ that produces a range of steel products‚ such as cold rolled (CR) coils‚ galvanized steel (GS) sheets and corrugated galvanized iron (CGI) sheets. AKSP was established in 1999 as a private limited company and currently employs about 650 staff‚ with large expatriate technical team‚ mostly from India. The installed production capacity of the plant is 150‚000 tons CGI sheets and 300‚000 tons CR coils per year. Actual production for the base year 2002 was 130‚943 tons. Due to steep increase
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repellents. The night-long noisy drone of mosquitoes that disturbs our sleep is music to the ears of the Rs1‚ 100-crore mosquito repellent industry. The various segments in this industry are coils‚ mats‚ vaporizers‚ aerosols and creams. The two new segments are personal sprays and gels. The category-wise market shares: Coils command nearly 50 per cent of the market share‚ vaporizer refills at 20 per cent‚ with mats at 10 per cent followed by aerosols at 9 per cent and the rest shared by creams‚ heating devices
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calculate the percentage error. This lab requires the use of two important pieces of equipment: the Helmholtz Coils and the deflection tube. The Helmholtz coils are used to generate the constant magnetic field.
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PHYS 101-2 STUDY GUIDE 1. The study of stationary or resting charges. ____________________________ 2. ________________________ is a connection made to Earth. 3. ________________________ is the process by which electrons are added or removed from a body. 4. List the three modes of electrification. __________________________________________________________________________________________________________________________________________________________________________________________
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