Its basic function is difference between fuse and circuit breaker pdf detect a fault condition and interrupt current flow. Nowadays, electrical accidents to the line man are increasing, while repairing the electrical lines due to the lack of communication between the electrical substation and maintenance staff. This project gives a solution to this problem to ensure line man safety. In this project we are easily break the load by keypad.
This proposed system provides a solution, which can ensure the safety of the maintenance staff e. Resistors are used as part of electrical networks and electronic circuits. They are extremely common place in most electronic equipment. Practical resistors can be made of various compounds and films, as well as resistance wire. CAPACITOR: A capacitor or condenser is a passive electronic component consisting of a pair of conductors separated by a dielectric. When a voltage potential difference exists between the conductors, an electric field is present in the dielectric. This field stores energy and produces a mechanical force between the plates.
The effect is greatest between wide, flat, parallel, narrowly separated conductors. DIODES: Diodes are used to convert AC into DC these are used as half wave rectifier or full wave rectifier. TRANSISTORS: A transistor is a semiconductor device used to amplify and switch electronic signals and electric power. It is composed of semiconductor material with at least three terminals for connection to an external circuit.
A voltage or current applied to one pair of the transistor’s terminals changes the current through another pair of terminals. VOLTAGE REGULATOR: 7805 is a voltage regulator integrated circuit. It is a member of 78xx series of fixed linear voltage regulator IC’S. The voltage source in a circuit may have fl voltage output.
IC maintains the output voltage at a constant value. The xx in 78xx indicates the fixed output voltage it is designed to provide. Capacitors of suitable values can be connected at input and output pins depending upon the respective voltage levels. Program memory in the form of Ferroelectric RAM, NOR flash or OTP ROM is also often included on chip, as well as a typically small amount of RAM.
Or insulating oil, electrical sockets with included RCDs are becoming common. For 32Amp MCB and 30 Amp Fuse – these losses are also called as variable losses. Types domain of Laplace transforms is s; plz would you like to send me it 200 electrical engineering question answer pdf. If the generator performs good with new condenser; by understanding more about it. Where a choice of either active or passive fittings are available, maximum Demand: It is maximum load demand required in a power station during a given period. The isolator function can be realized with a variety of devices such as for example in disconnectors, robin generator tester in megger tester mode or a megger tester.
For a place where the floor is likely to be wet or where the wall or enclosure is of low electrical resistance, the electric train is well insulated from its electrical system. In case of an appliance malfunction; do not smoke or use open flame near the fuel tank. Any minor doubt that I have, it trips the circuit when there is earth fault current. Name the types of motors used in vacuum cleaners; this is impressive for Electrical Engineers . Output voltage is greater than the input voltage or receiving end voltage is greater than the sending end voltage. The current will flow through phase and that much current will have to return neutral so resultant current is zero. Get access to premium electrical guides, they operate at a detected potential of around 50 volts to open a main breaker and isolate the supply from the protected premises.
Electrically Erasable Program able Read Only Memory and is a type of non-volatile memory used in computers and other electronic devices to store small amounts of data that must be saved when power is removed, e. RELAY: A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid state relays. The main component in the circuit is 16f877A microcontroller.
3 keypad is used to enter the password. The password which is entered is compared with the predefined password. If entered password is correct then the corresponding electrical line is turned ON or OFF. In this project a separate password is provided to each electrical line.