0
A motor has an efficiency of 0.4 how much useful energy is produced from 250 J?
Wiki User
∙ 7y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the efficiency of a motor that converts 100J of electric energy into 70j of useful energy?
70% efficient Take: Useful work out --------------------- X 100 = efficiency Work in
How much thermal energy is produced in an electric motor j of electrical energy are converted into 92j of mechanical energy?
Assume no vibration loss, the amount of energy input to electric motor subtract out the converted 92 J of mechanical energy is the thermal energy produced.
What is the effiency of a motor that converts100j of electrical energy into 70j of useful kinetic energy?
70 percent
What kind of energy is created when an energy conversion is happening?
Energy conversion takes place when one form of energy is converted to another form. An example would a turbine, which converts heat energy to mechanical energy, or a generator which converts mechanical energy to electrical energy, or an electric motor which converts electrical energy to mechanical energy. In all conversion processes energy is lost (i.e. it is converted to heat at a low temperature). The useful power output of a machine is always less than the power input, by a ratio called the efficiency, usually expressed as a percentage. Typical efficiency for an electric motor is 95%, for a car engine 25%.
How a machine transforms energy into waste energy?
A machine transforms energy into waste energy in that the motor is moving fast and the waste energy is produced.
What is the efficiency of a motor that converts 100J of electric energy into 70j of useful energy?
70% efficient Take: Useful work out --------------------- X 100 = efficiency Work in
Efficiency of a motor?
ratio of energy output to energy input.
How much energy does a motor convert to heat?
You can calculate the quantity of energy that a motor turns into heat with either one of these equations: Heat energy = ( 1 - efficiency of the motor) x (energy input to the motor) or Heat energy = ( 1 - efficiency of the motor) x (power input to the motor) x (running time)
A motor produces less mechanical energy than the energy it uses because the motor what?
Yes this is what we call efficiency of the motor. We give 100 but the motor in turn gives 40, so its efficiency is 40%
What form of energy does running a motor produced?
Mechanical energy
What kind of kinetic energy is produced in a car motor?
Mechanical energy.
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%.
What if you have no backpressure on a motor?
the motor will run with full efficiency as designed. No resistance means less energy expenditure. motor doesn't have to compensate for in line obstruction.
How much thermal energy is produced in an electric motor j of electrical energy are converted into 92j of mechanical energy?
Assume no vibration loss, the amount of energy input to electric motor subtract out the converted 92 J of mechanical energy is the thermal energy produced.
Wasted energy produced by motor bike?
Noise and heat is wasted energy from motorcycles.
What is the effiency of a motor that converts100j of electrical energy into 70j of useful kinetic energy?
70 percent
What kind of energy is created when an energy conversion is happening?
Energy conversion takes place when one form of energy is converted to another form. An example would a turbine, which converts heat energy to mechanical energy, or a generator which converts mechanical energy to electrical energy, or an electric motor which converts electrical energy to mechanical energy. In all conversion processes energy is lost (i.e. it is converted to heat at a low temperature). The useful power output of a machine is always less than the power input, by a ratio called the efficiency, usually expressed as a percentage. Typical efficiency for an electric motor is 95%, for a car engine 25%.
