Just do the above multiplication and see the result. Day of the Week: January has 31 days. It means that every date in February will be 3 days later than the same date in January 28 is 4 weeks What happens when petrol is injected in diesel engine?
Any business ideas for mechanical engineers in India? I never fully understood the concept behind not sharing ideas for the fear of them getting stolen, when you yourself are going to do nothing about it for lack of Difference between compiler and interpreter.
Why efficiency of DC generator is more than that of motor? Can a motor drive a generator which can produce power more than the power used by the motor to drive the generator?
Why the efficiency of generator is more than the motor in case of swinburne's test? Why generator has more efficient than motor? Why efficiency of generator is greater than motor? Why generator has the better efficiency than motor? Can a motor act like an electric generator?
How do you build an electric motor run a generator to power itself if the motor has a larger gear and the generator has a smaller gear? Can an electric motor run a generator to power itself if the motor has a small gear and the generator has a big gear?
What is the problem with using an electric motor to run a generator stepped up with transformers that is used to run the motor and give electricity for other uses?
What is the difference between energy efficient motor and normal motor? Is a volt electric motor more efficient than a volt motor? How much electric motor do i need to run a watt generator?
What is the efficiency of a 12 volt electric motor? Is it possible that you use motor as a generator input and electricity of the generator provide to a motor as a input?
How is an electric motor different than an electromagnet generator? What are the differences between the parts of a generator and the parts of a motor?
What can you run with a watt generator? A motor produces less mechanical energy than the energy it uses because the motor what? Why the efficiency of induction motor is less than that of transformer? What generator is suitable for a 2 HP single phase motor? Can a 1 hp electric motor run a watt generator? How much power does a 1HP motor require?
Why is a high-efficiency machine more desirable than a low-efficiency machine? What is synchronous machein? Study Guides. Trending Questions. What can you hold in your right hand but not in your left hand? Still have questions? Find more answers. Previously Viewed. Why efficiency of DC generator is more than that of DC motor? Unanswered Questions. Another way of expressing efficiency is the power loss of the machine.
The main power losses are When running as a motor, the a losses will increase the input terminal voltage, and b will reduce the output torque. When running as a generator, b increases the torque needed, and a reduces the output voltage. The machine is never running under exactly the same conditions, the mechanical power and electrical power are never equal the input always exceeds the output. So if you want to define efficiency at a particular power point, or speed, or torque, they will always be slightly different for motoring or generating.
But similar. The generating efficiency should be the same as motoring efficiency under the same operating conditions. It may be a little difficult to determine that the operating conditions are the same. When operating as a generator, some of the mechanical driving power goes directly to supply the mechanical losses of the generator.
When the machine as acting as a motor, some of the electrical input power is converted to mechanical power that is used to supply the motor's mechanical losses. Thus the losses are compounded in that there are losses associated with converting electrical energy to supply mechanical losses. That additional electrical power increases the operating temperature slightly requiring the motor load to be reduced slightly to make the operating conditions the same.
With a permanent magnet machine, there is no excitation system. If the machine has an electrical excitation system, there is another compound loss situation due to the machine needing to generate its own excitation power when acting as a generator.
Sign up to join this community. The best answers are voted up and rise to the top.
0コメント