0
Why is a dynamo tor more efficient tnan a motor generator set?
Wiki User
∙ 10y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
who is more efficient dc motor or ac motor and why?
DC motors are generally more efficient than AC motors. DC motors have a lower amount of inertial associated with them, making them more efficient to run.
Will using a transformer to convert 230V to 12V DC consume more energy than using a few capacitors and resistors without a transformer?
no, the transformer is much more efficient <><><> HOWEVER- a transformer only changes the voltage of AC current- it does not change it to DC. You will still need diodes or rectifiers. You can also use a motor/generator- a 230v AC motor turns a 12 v DC generator.
Why DC battery is required for generator?
The starter motor of a diesel generator is a DC motor. Depending on the size of the diesel engine the starter motor could be 12 volts or 24 volts. Sometimes more that one battery is used at the specific voltage. These batteries are connected in parallel to create more amp hour cranking power.
What is the difference between energy efficient motor and normal motor?
in EEM copper material used is more than the normal motor.the EEM has more efficiency around 95% than the normal motor.
Can a motor drive a generator which can produce power more than the power used by the motor to drive the generator?
Claims about perpetual motion machines are always false because they ignore the inevitable losses of energy which must be overcome to make any machine operate so that it can do its intended work. Such losses mean that any machine, whether electrical or mechanical, must be supplied with more input power than it can convert into output power. In the case of electrical machines there are many reasons for energy losses: Bearing friction losses; "windage" losses caused by air having to be moved out of the way by spinning parts such as rotating armatures and cooling fans; magnetic hysteresis losses absorbed by eddy currents flowing in rotor armature and stator laminations; commutation losses in dc machines and slip ring losses in ac machines; excitation losses caused by the need to supply energy to the coils in the stator of a machine in order to magnetize it; general electrical resistance losses caused by the need to use energy to force electric currents to flow through the windings of any electrical machine. Whilst engineers have found ways to reduce each one of those types of loss to a minimum, it is still a fact of life that no electrical machine can be 100% efficient. In the case of a motor, it will always require more energy to be supplied to it than it can convert to mechanical power. In the case of a generator, it will always require more mechanical power to be supplied to it than it can generate as electricity. Some electrical machines have a power-conversion efficiency of up to 80% but most have efficiencies much less than that. If a motor and a generator were linked together to form a motor-generator set (the motor driving the generator driving the same motor) then, if both machines were as good as 80% efficient, that would mean the combined efficiency of the system of would only be .8 x .8 = .64 i.e. 64%. In other words, to keep the motor-generator set running, additional power equal to at least 36% of the motor-generator set system's own power would need to be supplied from an external source. Those facts make the set-up described in the answer to this question shown below pure nonsense. Period.
Why generator has more efficient than motor?
Depending on what you're referring to, you may have this completely backwards. A motor's efficiency is fairly high. A generator's efficiency at converting chemical/kinetic/mechanical energy to electric energy is at best around 50%.
Can a dynamo motor ever stop?
Yes, when no more energy is applied it will stop.
Can a motor act like an electric generator?
when the motor runs more than rated speed it produces leading current and results act as a generator. (or) the motor act as generator when it produces more back e.m.f
Is dynamo the same as DC generator?
As long as the direction in which the dynamo is turned remains the same then yes, it is essentially the same as a D/C generator, albeit a small, weak one. If the rotational direction of the dynamo keeps changing it becomes an A/C generator (the current flows one way, then the other). This would require some form of charging capacity such as a battery or capacator in order to have any usefull purpose. Generally speaking, A/C generators & inverters either 1)are powered by fuel engines, or 2)require much more input than a dynamo could feasibly provide in order to carry out their particular function. A typical example of an A/C generator is a Welding machine. (You could not run a welder off a dynamo!)
who is more efficient dc motor or ac motor and why?
DC motors are generally more efficient than AC motors. DC motors have a lower amount of inertial associated with them, making them more efficient to run.
Is the dynamo the same as the generator?
As long as the direction in which the dynamo is turned remains the same then yes, it is essentially the same as a D/C generator, albeit a small, weak one. If the rotational direction of the dynamo keeps changing it becomes an A/C generator (the current flows one way, then the other). This would require some form of charging capacity such as a battery or capacator in order to have any usefull purpose. Generally speaking, A/C generators & inverters either 1)are powered by fuel engines, or 2)require much more input than a dynamo could feasibly provide in order to carry out their particular function. A typical example of an A/C generator is a Welding machine. (You could not run a welder off a dynamo!)
Can an electric motor run a generator to power itself if the motor has a small gear and the generator has a big gear?
I think it can work with a certain type of generator and an electric motor like one that uses 300w/h The idea is to run a generator that can produce more electricity than needed to run the motor that is powering it.
What are the benefits of using a propane generator?
The benefits of using a propane generator versus a gasoline generator is that a propane generator is more cost efficient. You will save money on propane use. Gasoline is more expensive. Propane generators are also safer for the environment.
Will using a transformer to convert 230V to 12V DC consume more energy than using a few capacitors and resistors without a transformer?
no, the transformer is much more efficient <><><> HOWEVER- a transformer only changes the voltage of AC current- it does not change it to DC. You will still need diodes or rectifiers. You can also use a motor/generator- a 230v AC motor turns a 12 v DC generator.
Is a Diesel Generator more efficient than a gas one?
No, it's actually less efficent.
What are the effects on the dynamo?
The electric dynamo played a big role in society during the Industrial Revolution, from the role it played itself. The dynamo was an electric generator, that produced electricity. It's something the whole world uses today, just in more advanced ways ever since the Industrial Revolution. -Holy Cross HS BABY
Why the efficiency of generator is more than the motor in case of swinburne's test?
the generator windings are made of more thicker windings . Hence lesser resistance and lower Cu losses
