ILEKTECH

A permanent magnet is a ferromagnetic material (alloy of iron, nickel and cobalt). When magnet is freely suspended, it come rest pointing north and south directions. The end, which points towards north, is known as North Pole and other towards south is called South Pole. The area around the magnet is called magnetic field, a magnetic field cannot be seen, felt, smell or heard and therefore it is difficult to represent it. Michael Faraday suggested that magnetic field could be represented pictorially by imaging the field to consist of lines of magnetic flux. Magnets are divided into two general classes A)      Natural magnet B)      Artificial magnet Natural magnet – The natural magnets are found in nature and they are known as Lodestone or leading stone. The natural magnet has chemical compensation of Fe3O4 Artificial Magnet – The magnet prepared by artificial method is called artificial magnet. It is classified as  a)       Permanent magnet – the magnet which retains t

Atom             It has a central core known as nucleus. It contains two types of particles one is known as proton and carries positive charge. The other is neutron, which is electrically neutral, that is it does not carries any charge and around the nucleus the electron which carry negative charge revolves in an elliptical path. The atoms are electrically neutral. The total number of neutron and proton are known as atomic weight. Current Current is a flow of electrons. The standard unit of current is ampere (A). One ampere of current represents one coulomb of electrical charge (6.24 x 10^18 charge carriers) moving past a specific point in one second Potential Difference Potential difference is work done to move a unit positive charge. The basic unit of measure for potential difference is voltage (V). Resistance Resistance is the opposition that a substance offers to the flow of electric current. The standard unit of resistance is ohm Effect of temperature on the re

A helicopter is an aircraft that is lifted and propelled by one or more horizontal rotors; each rotor consists of two or more rotor blades. Helicopters are the true flying machine. Helicopters are classified as rotor craft or rotary wing aircraft to distinguish them from fixed wing aircraft because the helicopters derive its source of lift from the rotor blades rotating around a mast.   The ability of helicopter is to move laterally in any direction or rotate 360 degree make them exciting to fly. Helicopters are used for transportation, construction, fire fighting, search and rescue, and a variety of other jobs that require its special capabilities Forces Acting on the Aircraft         Once a helicopter leaves the ground, it is acted upon by aerodynamic forces a)       Thrust- the forward force produced by the power plant/ propeller or rotor. It opposes or overcomes the force of drag. As a general rule, it acts parallel to the longitudinal axis b)       Drag- A rearward,

  Lots of researchers are working to develop technologies that help people to regain control over their movements through a combination of robotics and brain power (formally known as brain computer interface control systems). Exoskeleton suit means wearable robots that use innovative textiles to provide a more con-formal, unobtrusive and complaint means to interface to the human body. The use of an external wearable framework that augments a human's natural physical ability    Soft exosuit offers a new way to assist the elderly in maintaining or restoring their gait, in rehabilitating children and adults with movement disorder due to stroke, Multiple sclerosis and Parkinson's disease, or to ease the physical burden of soldiers, firefighters, paramedics, farmers and others whose jobs require them to carry extremely heavy loads. Even the exoskeleton suits are suitable for spinal cord injury patients walk. However, rigid exoskeletons often fail to allow the wearer to perform h

    A 3d printing is a computer aided manufacturing (CAM) device that creates three dimensional objects. It starts with a virtual design of the object to be printed; the computer software can scan existing items or allow you to create a unique design. The computer then takes that model and slices it into thousands of horizontal layers. The printer reads each one of those slices and prints it out layer by layer to build a solid three dimensional object. This process is called additive manufacturing. Many different materials can be used for 3D printing , such as ABS plastic, PLA, polyamide (nylon), glass filled polyamide, stereo lithography materials (epoxy resins), silver, titanium, steel, wax, photopolymers and polycarbonate. Types of 3d printing 1)       Fused Deposition Modelling - It is an additive manufacturing technology commonly used for modelling, prototyping, and production applications. 2)       Stereo lithography - It is an additive manufacturing process which em

CHAPTER 1 LITERATURE SURVEY           The method that is followed by energy providing companies, in this generation is, there are large numbers of employees that are placed to take the energy meter reading manually. It is taken once in a month, throughout the year. The readings are taken and noted in their dairy, which is then submitted to the utility company. The bill is then printed and sent to their respective homes. This is the process that is followed until this day. This process has certain disadvantages. They are:                i.      An hefty amount of money is spent on employees assigned for data collection.This is in terms of wages, allowances, perks, pensions, etc.              ii.      May take faulty reading unknowingly by an employee during data collection.That is by noting wrong reading, cause mistakes during calculation, etc.          To overcome these drawbacks we have come with a new method. In this method the energy meter is replaced by a new se