Alternator generator mcqs with explanatory answers. Dynamos produce a direct current that flows in the same. On the other hand, the alternator always produces the alternating current. Although both these devices serve the same function, they are quite different in every other aspect. It is also known as a generator, however the term generator normally refers to an alternator which creates alternating current power. May, 2011 a dynamo is nothing but an electric generator, and was the main source of power for the industries till alternators came along. Efficiency is on the alternators side, as the wire winding is the biggest and heaviest part of both devices, so the alternator is spinning the lightest part. The main difference between the two is that the motor is an electric device which converts electrical energy into mechanical energy.
Dynamo produce direct current whil alternator produces alternative current which keeps changes its polarity and follows sine wave pattern. A car could have either a dynamo or an alternator as its generator. The main difference between dynamos and alternator is the type of current they produce. This difference in per cent of the synchronous speed, is called the generator s slip. But the alternator conductors are calculated for a definite current and the insulation at magnetic system are designed for a definite voltage independent of p. These retain all the appearance of the original dynamo but conceal a powerful denso alternator which delivers reliable and consistent output to keep your battery topped up and to run all of your. Difference between dynamo and alternator difference between. By using commutator and brush assembly it is converted to d.
The integral parts of a dynamo are a stator and an armature. I have the reg no, of which i have entered into the dvla website but it states i need to contact them, the gentleman says. It converts mechanical energy into electrical energy. This means the alternator can work at a higher speed and produce more power at lower speeds. The alternator has a smaller diameter pulley to drive it at a higher speed than a dynamo, giving better output and therefore battery charging at lower engine speeds. Generator slip the speed of the asynchronous generator will vary with the turning force moment, or torque applied to it. In the generator, a winding of wires spins inside a magnetic field to create a current. Mini spares article changing from dynamo to alternator. The first thing to note is depending on if you are on 6 volt or 12 volt electrical system will dictate the position of your regulator on your dynamo. The difference between the pm permanent magnet and a variable magnet electro magnet field alt. Use of alternator the power for the electrical system of a modern vehicle gets produced from an. This video describes whether there is any difference between generator and alternator. Rewiring at alternator 5 connect d wire from original wiring to large positive terminal on alternator. What are the advantages of an alternator over a dynamo.
Another difference between ac and dc involves the amount of energy it can carry. Delco 10si 15si 27si alternator service and rebuilding created date. This is an important figure due to the fact that oem alternators are typically illequipped to handle additional loads from aftermarket equipment and upgrades. Water boxer engines with 90a alternator except 1900 cc with engine code df and an additional hydraulic pump water boxer engines with 45a and 65a alternator 4. Sep 27, 2009 a dynamo, originally another name for an electrical generator, now means a generator that produces direct current with the use of a commutator. Though output of the both machines electrical power, there are some key differences between alternator and generator are there in terms of design type of power etc. What is the difference between a generator and a dynamo.
An alternator gives same performance at all speeds whereas a dynamo produces good current at high speeds. S is used by the regulator to monitor charging voltage at the battery. Like a dc generator, an alternator also has an armature winding and a field winding. Difference between alternator and generator difference. The alternator has one big wire bolted to it, which goes right to the battery or the starter. Alternator synchronous generator and types of alternators. A larger alternator is applied for a lower temperature rise with increased copper resulting in lower current density. Power stations use alternators, because it is necessary to transmit. Efficiency is on the alternator s side, as the wire winding is the biggest and heaviest part of both devices, so the alternator is. The frequency of output can be given as f n p 120 hz. The ground wire from the dashboard indicator light goes to the voltage regulator on a generator equipped car and to a pushon connector on the alternator. Dynamo versus alternator by tim harris at the emog pub. Differences between alternator and generator electrical.
Jan 11, 2016 im considering converting my 66 2000 sc from dynamo to alternator charging. Generator how to bench test it while in your car newest version duration. Fit the alternator using the necessary rear support bracket part no. Difference between motor and generator circuit globe. All trs fitted with an alternator must be converted to negative earth. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature. We will be focusing on the function of a particular element of a power generator called the alternator. A simple guide to converting your aircooled vw from dynamo generator to internally regulated alternator. All electrical generators whether ac or dc, depend upon principle of magnetic induction regardless of their size. A generator was repairable at home and it took maintenance. Dynators, alternator conversions and dynamos for classic. Generator and motor are two different devices with different applications.
The motor and the generator are almost similar from the construction point of view, as both have stator and rotor. What is the difference between an alternator and a. Difference between dynamo and generator compare the. Dynamo a device that makes direct current electric power using electromagnetism. My 2000 parts and workshop manuals only cover dynamo and aircon vehicles with alternators and dont give a very good diagram of the alternator mount. The major difference between the alternator and the generator is that in alternator the armature is stationary and the field system rotates whereas in the. Alternator winding temperature rise in generator systems. The main difference between alternator and generator is that a generator is any device that converts mechanical energy into electrical energy in the form of alternating current or direct current, whereas an alternator is a type of generator that produces alternating current.
Many associated parts listed encompassing alternators, voltage regulators, woodruff keys, power steering pump belts, dynamo pulleys, alternator pulleys, shims, vbelts, backing plates, alternators, pulley belts, cooling fan kits, regulators, dynamos and dynamo. The dynamo generates dc power and is not effective at low revs, whereas an alternator generates ac power and works even at idle revs, which is why modern cars all have one instead of a dynamo because of all the electrical demands these days. Generators are used in the production of largescale electricity. Generators, dynamos, and batteries are the three tools necessary to createstore substantial amounts of electricity for human use. Battery, starter, dynamo and alternator anglo parts. As you may have noticed the alternator probably has two large spade terminals, as mentioned. Since the popularity of the alternator in cars, tractors etc. In principle, any ac electrical generator can be called. Wheatstones design was similar to siemens, with the difference that in the siemens design the stator. It works by rotating coils of copper in a magnetic field. Both alternators and generators convert mechanical energy into electrical energy. High end sports and luxury cars will cost even more. An alternator has a number of advantages and differences compared to a dynamo generator.
Converting energy from one form to another is the key to understanding the differences between electric motors and generators. But main difference is type of current it produces. The synchronous electrical generator also called alternator belongs to the family of electric rotating machines. The following information is presented as a guide when wiring and troubleshooting alternators. To rotate the dynamo there must be a mechanical energy. Difference between alternator and generator with detailed. Both of these units fixed or variable fld can be called dynamo s or alternators, use which ever handle you prefer. Ive managed to get hold of an alternator mount, but it seems a bit oddly shaped sorry no pic yet. What is the difference between dynamo and car generator.
Alternator, alternator mounting bracket its longer than the one for the dynamo, since the alternator is much shorter, maybe a new fan belt, battery clamps, insulating tape. A stator is one of the internal parts of the alternator, specifically the. When autoplay is enabled, a suggested video will automatically play next. Though technically speaking, both a dynamo as well as an alternator is electric generators producing electric current, there is difference between dynamo and alternator that will be discussed in this article. Dynamo is a machine which converts mechanical energy to electrical energy. A generator is a wider term used to define a machine which produces electricity. An alternator is a charging system for cars that produces electricity. Aug 03, 2019 the difference between both these devices comes due to their mechanism and the type of electric current they produce following it. Mar 06, 2019 an alternator is defined as a machine which converts mechanical energy to electrical energy in the form of alternating current at a specific voltage and frequency. In an alternator, a magnetic field is spun inside a winding of wires. The best explanation of an alternator is given in wikipedia.
Bird, i think the term dynamo is an old term for generator, be it an ac or dc. An alternator is a device that generates power for an automobile to run its electrical loads and to charge the battery. What is the difference between dynamo and an alternator. Difference between synchronous generator and induction generator in a synchronous generator, the waveform of generated voltage is synchronized with directly corresponds to the rotor speed. What is the difference between an alternator and a generator. With regards to the number of wire turns n of course, the more you increase the number of turns with thinner wire in a fixed space the higher the electrical resistance so there is a limit to the. The dc generator has become just generator and the ac generator with output integrated rectifiers for a dc output is called alternator. To sound bona fide, i might as well give you the official job description of the generator. But acs voltage from a generator, in a power plant, can be bumped up or down in strength by another mechanism called a transformer. Difference between dynamo and alternator compare the.
There is no simple kit that can be offered to convert the cars still struggling on with a dynamo, to alternator fitment. Alternators are also known as synchronous generators. If the commutator is removed, a dynamo is essentially an alternator producing ac power. To help resolve all of the problems associated with dynamos, fosseway performance has an extensive range of dynamo conversions known as dynators. A generator does the opposite of this, converting mechanical energy into electricity. It also gives a small description upon the operation and quality of working of alternator and generator. In a dc generator, the armature is always the rotor. A dynamo is nothing but an electric generator, and was the main source of power for the industries till alternators came along. The alternator helps maintain the voltage of the car battery. Dynamo vs alternator i have a kubota year 2016 b2601, and i just completed installing the alternator upgrade kit kubota part number 6c04095306, this kit contained everything needed to finally have the electrical power 14. The ground wire from the dashboard indicator light goes to the voltage regulator on a generatorequipped car and to a pushon connector on the alternator. It produces a useful output even at low revs which a dynamo cannot.
Understanding the alternator four wires connect the alternator to the rest of the charging system. What is the difference between generator and alternator. An electric motor converts electricity into mechanical energy, providing a power source for machinery. The generator is the exact opposite of the alternator. Agn 0 alternator ratings and overload alternator ratings ac synchronous generator alternator ratings are specified in accordance with national and. The alternator has the diodes built in to convert the ac to dc and can spin much faster. With the availability of affordable silicon diode rectifiers, alternators were. In this sense, a dynamo is also a generator, though it would be incorrect to call a generator, a dynamo. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electricpower conversion devices were based, including the electric. Now let us discuss about construction of alternator or synchronous machine.
In alternators, the armature may be either the rotor or stator. The armature of the alternator is mounted on the stationary element called stator and field winding on a rotating element. Oct 04, 2010 dear friend, to start up with, all alternators are generators, but a generator can be an alternator, or a dc generator. Stock info sufficient stock low or 1 in stock out of stock. The working of an alternator is based on the principle that when the flux linking a conductor changes, an emf is induced in the conductor.
What is the difference between an alternator and a stator. Dynamo to alternator conversion classic rover forum. Difference between generator and motor engineering insider. Apr 09, 2017 a dynamo is an alternator with a mechanical commutator that rectifies the current. Until the 1960s, automobiles used dc dynamo generators with commutators. The 196412 ford mustang had the generator and after that mustang had the alternator.
Jun 01, 2008 lust is entirely physical you want to have sex with this person, grope this person. The generator is the device which converts the mechanical energy into the electrical energy either electric current or direct current. Differences between alternator and generator alternator and generator both are electromechanical machines which converts mechanical input to electrical output i. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electricpower conversion devices were based, including the electric motor, the alternatingcurrent alternator, and the rotary converter. Page 1 of 2 1971 mini cooper s 1275 or not posted in problems, questions and technical. The main difference between them is in regard to what spins and what is fixed. Occasionally, a linear alternator or a rotating armature with a stationary magnetic field is used. Remain in charge with the tremendous selection of alternator parts and vbelts for the volkswagen type 2 bay available at just kampers. Dynamo produce direct current whil alternator produces. On 6 volt systems you will find the regulator screwed to the top of the dynamo generator body itself, whereas 12 volt systems will be on. The output of an alternator is usually expressed in amperes, which is essentially just the amount of current that the unit is capable of providing to all of the equipment thats hooked into the electrical system. For the alternator, remove dynamo slacken dynamo adjustment pillar nut 916 af and two bolts on the top 12 af, then replace the rear bracket with one suitable for an alternator 12 af bolts, an replace the alternator basically reversing the above steps with an alternator specified adjustment plate theyre different. Each battery is designed to produce only one voltage, and that voltage of dc cannot travel very far until it begins to lose energy. Modern alternators prefer rotating field type of construction.
While the stator is stationary and provides constant magnetic field, the armature is a set of rotating windings that move in the magnetic field. A dynamo is a common generator used on bicycles to power lights, but it has been used for many other purposes as well. Plant engineering differences between electric motors. This page on ac generator vs dc generator describes basic difference between ac generator and dc generator types. Jul 23, 2011 in this sense, a dynamo is also a generator, though it would be incorrect to call a generator, a dynamo. Both dynamos and alternators use the same concept of electromagnetic fields to produce power. A dynamo is an electrical generator that creates direct current using a commutator. A dynamo is an alternator with a mechanical commutator that rectifies the current. B is the alternator output wire that supplies current to the battery. A wire loop rotates within the magnetic field generated by a magnet, which induces an ac voltage between the loop. Delco 10si 15si 27si alternator service and rebuilding. Overrunning alternator pulleys oap are used on a number of latemodel import and domestic vehicles.
Ig is the ignition input that turns on the alternator regulator assembly. Battery, starter, dynamo and alternator pdf catalogue page 78 the following parts are available in this group. Increased size and copper permits higher motor starting kva and lower voltage dips on application of the load. The dynamo and alternator are two very similar devices that have the same function. What is the difference between an electric generator. Alternators and generators convert mechanical energy into electrical energy. Some trucks have a generator and the generator has a plugin in the back for ac appliances. A generator will spin like an electric motor if you hook it to a power source. Generators are used in the production of largescale. An alternator will still deliver between v14v even at idle speeds enough to charge the battery.
In the classic vehicle dynamo, the field winding, which has small gauge wire since it requires little exciting current, is stationary whereas the armature rotor is the bit that supplies the heavy current and is, therefore, wound with thicker wire. The difference between asynchronous and synchronous generator. Figure 1 illustrates the principle of operation of an ac generator. Love is emotional yes, there are aspects of lust in love but for the most part its wanting to be with that person, talk with that person, cuddle, and to stay with them forever. While the stator is stationary and provides constant magnetic field, the armature is a set of rotating windings that move in. Since the mechanical commutator is built into the device it is impossible to derive ac from it, and therefore is considered a dc generator. The difference between both these devices comes due to their mechanism and the type of electric current they produce following it. Difference between alternator and generator difference wiki. Batteries may have been discovered as early as 248 bc. Difference between alternator and generator in tabular form is given here. An alternator operates on the same fundamental principle of electromagnetic induction as a dc generator. Jul 08, 2017 dynamo and alternator had same concept of working. The frequency of the resulting signal is determined by. Visit now to check the indepth comparison and alternator generator differences.
The link you sent is very helpful and i think im going to wire mine like that. Therefore the current is dc, or direct current, and can be used on loads requiring dc. In the most basic sense a generatordynamo is one magnet rotating while inside. Alternator slippage and undercharging can also be caused by a bad alternator pulley. The generator takes longer to recharge the battery and is usually more power robbing as they are less free spinning larger and heavier the magnito is designed to power only the spark plugs and is a poor source for charging any real amps to the battery. An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. What is the difference between a dynamo and a generator. Dynamos and generators convert mechanical rotation into electric power. The major difference between the alternator and the generator is that in alternator the armature is stationary and the field system rotates whereas in the generator armature rotates and field is stationary. The insulation system used on alternators manufactured by cummins generator technologies.
Vw generator to alternator conversion wiring diagram free. What is the difference between alternator and generator. In practice, the difference between the rotational speed at peak power and at idle is very small, about 1%. Generator normally this term is used to describe an alternator which creates ac power using electromagnetism.