tennesseepaster.blogg.se - Electrical engineering calculator self made

#ELECTRICAL ENGINEERING CALCULATOR SELF MADE GENERATOR#

For lighting on steam and diesel railways trains.

For starting, ignition and lighting of automobiles, aircrafts etc.

For the operation of protective devices and for emergency lighting at.

Storage batteries are used for various purposes, some of the applications are Explain the application of storage batteries. It is usually expressed as a percentage of synchronous speed Speed of the rotor of an induction motor is always less than its Slip can be defined as the difference between the flux speed (Ns) and the rotor Its value depends upon the speed of rotation of the armature conductors. The poles of magnet, in a DC motor, cut the magnetic flux, opposes the currentįlowing through the conductor, when the armature rotates, is called back emf. The induced emf developed when the rotating conductors of the armature between Why back emf used for a dc motor? highlight its significance.

Super tension cables can transmit voltage 66 kV to 132 kV.

High-tension cables can transmit voltage upto 23000 volts.Low-tension cables, which can transmit voltage upto 1000 volts.

What are the various kind of cables used for transmission?Ĭables, which are used for transmitting power, can be categorized in three Systems and they might work on off grid systems that are not connected to the Work on the design and maintenance of the power grid i.e. Of all power equipments also comes under power engineering. Generation, transmission and distribution of energy in electrical form. Power engineering is a sub division of electrical engineering. How can you relate power engineering with electrical engineering? System, as the sine wave current will naturally tend to zero at some point When a large fault occurs in a network, it is easier to interrupt in an AC From power stations, AC is produced so it is better to use AC then DCĭ. Lower than the equivalent DC transmissionĬ. Plant cost for AC transmission (circuit breakers, transformers etc) is much It is easy to maintain and change the voltage of AC electricity forī. Why AC systems are preferred over DC systems?ĭue to following reasons, AC systems are preferred over DC systems:Ī. Output rotating armature and stationary magnetic field is used. Into dc current for external load whereas an alternator has a stationaryĪrmature and rotating magnetic field for high voltages but for low voltage Rings and brushes riding against each other, hence it converts the induced emf Magnetic field and rotating conductor which rolls on the armature with slip The only difference is that their construction. Both have the same principle of electromagnetic induction,

#ELECTRICAL ENGINEERING CALCULATOR SELF MADE GENERATOR#

Generator and alternator are two devices, which converts mechanical energy intoĮlectrical energy. State the difference between generator and alternator In addition, starting torque is increased and it prevents the damage of motor.Which reduces voltage 3 times, that is why current also reduces up to 3 times Star delta starter circuit comes in circuit first during starting of motor,.Voltage drops and hence it causes less losses. Starting current is reduced 3-4 times of the direct current due to which.

Star delta starter is preferred with induction motor due to following reasons: Why star delta starter is preferred with induction motor? Various kind of cables used for transmission?įor a dc motor? highlight its significance.Īpplication of storage batteries. Relate power engineering with electrical engineering? Starter is preferred with induction motor?ĭifference between generator and alternator Electrical Engineering interview questions and answers