0
No.
electric motors aren't heat engines.
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∙ 9y ago
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What generates heat when the motor is running?
The frictional losses and the resistive losses generate heat in a motor
Whats the difference between a motor and an engine?
There are different definitions for both depending on the application to which it is put.For instance, to a mechanical engineer an engine produces energy or power whereby a machine consumes it.
An electric motor under steady load draws 9.7 amperes at 110 volts delivering 1.25 hp of mechanical energy What is the rate of the heat transfer from the motor in kW?
As the motor is drawing 9.7×110 = 1,067 watts (or 1.067 kW), and delivering 1.25×746 watts (or .9325 kW) of mechanical energy, it should release 1,067-932.5 = 134.5 watts (or .1345 kW) of heat.
Is it possible to construct a heat engine that will not expel heat into the atmosphere?
is it possible to construt a heat engine that will not expel heat into the atmosphere
Why is a cooling system required in a motor vehicle?
Because quite a lot of the energy used by a combustion engine gets turned into heat whether we want it or not, so a cooling system is needed to keep the engine from overheating.
How much power is required by a 1 horsepower motor?
1 horsepower is the output power - the power produced. The power it uses is more, because no engine is 100% efficient. How much more, depends on the type of engine; an explosion engine (such as one that uses gasoline) is basically a heat engine, with an efficiency of perhaps 1/3; that means that about three times the output power is actually consumed. For an electrical motor, the required electricity will be only a little more than 1 horsepower (about 742 watts running current, more when the motor is getting started).
Do electric cars emit heat energy?
Yes. The electric motor does emit some heat. Also, when the car is stopping, forward energy is converted into heat.
What energy transformation took place in the motor?
If the engine is a combustion engine the the energy is first stored in the fuel then the energy is released which push the pistons. The pistons then turn the crankshaft and those, through a series of gears, make the axles rotate. The difference with the electric motor is that the fuel is electricity and alternating currents make the center rotate. So for the combustion engine it would be chemical to heat and mechanical. The electric then would be electrical to heat and mechanical.
How are steam engines diesel engines and electric engines similar and different?
Steam engines and diesel engines are heat engines. An electric motor isn't an engine - it converts and transfers power, but doesn't actually create it.
Why electric motor related in physics?
It is a demonstration of electric energy being changed to mechanical energy, and heat.
How is hybrid car more fuel efficient than a regular car?
The hybrid drive train is able to use a lower horsepower but more efficient internal combustion engine assisted by an electric motor to provide quick acceleration response. When braking the electric motor is used as a generator to recapture some of the car's energy for use later to accelerate the car (instead of wasting all of this energy as heat as the regular car does). If the hybrid does not need the internal combustion engine it can operate entirely powered by the electric motor or even sometimes just coasting (consuming no energy at all, it is illegal to coast a regular car its internal combustion engine must always be running and it must be in gear at all times when in motion).
How does a hybrid save fuel?
By being able to use a smaller, lower horsepower, more fuel efficient internal combustion engine than would normally be needed for a vehicle of that size and weight.By being able to run on electric power only for limited periods of time.By being able to stop the internal combustion engine when the vehicle is not moving, thus eliminating fuel wasted while idling.Each of these needs additional explanation: A vehicle needs a certain amount of horsepower (depending on its size, weight, drag, speed, etc.) to cruise at a constant speed and more horsepower to accelerate. For an ordinary vehicle the internal combustion engine must be designed to be able to provide the maximum horsepower needed for the highest rate of acceleration. But for a hybrid the internal combustion engine only needs to be designed to be able to provide the maximum horsepower needed to cruise at a constant speed at the highest speed the car is intended to be driven at, with the electric motor providing the additional horsepower for acceleration. Because a smaller, lower horsepower internal combustion engine can be designed to always be more fuel efficient across the range of horsepower demanded of it than a larger, higher horsepower internal combustion engine, the hybrid saves fuel this way.When the vehicle is cruising at a low enough speed that the electric motor is able to provide all the horsepower needed to keep the speed constant then the internal combustion engine can be stopped, entirely eliminating use of fuel until such time that it is necessary to restart the internal combustion engine (either to recharge the battery or because of a change in driving conditions e.g. more horsepower needed to climb a hill). Also when going downhill or during breaking the hybrid vehicle can recover some of the energy that would just be wasted as heat in an ordinary vehicle, by turning their electric motor into an electric generator and using it to charge the hybrid battery so that this energy can be used later by the electric motor (this is called: regenerative breaking).When the vehicle is not moving, running the internal combustion engine just wastes fuel (except to keep it warm in very cold weather, which hybrids will do if they detect the engine is too cold for proper operation), so the ability of a hybrid to stop the engine and restart it later when the car needs to move again saves fuel that an ordinary vehicle wastes.
What electric energy converts to heat and motion?
Electrical energy can by converted to Mechanical energy (motion) by electric motors, and also electrical heaters change electrical energy into heat.
What energy conversion that occurs when a motor operates?
This varies depending on the motor; an electric motor is quite different from a motor that operates on gasoline. In the case of the latter, the chemical energy from the gasoline gets converted into heat; then part of that heat gets converted into mechanical energy, i.e., movement. A significant part of the energy stays as heat.This varies depending on the motor; an electric motor is quite different from a motor that operates on gasoline. In the case of the latter, the chemical energy from the gasoline gets converted into heat; then part of that heat gets converted into mechanical energy, i.e., movement. A significant part of the energy stays as heat.This varies depending on the motor; an electric motor is quite different from a motor that operates on gasoline. In the case of the latter, the chemical energy from the gasoline gets converted into heat; then part of that heat gets converted into mechanical energy, i.e., movement. A significant part of the energy stays as heat.This varies depending on the motor; an electric motor is quite different from a motor that operates on gasoline. In the case of the latter, the chemical energy from the gasoline gets converted into heat; then part of that heat gets converted into mechanical energy, i.e., movement. A significant part of the energy stays as heat.
What is horsepower in cars?
Horsepower is the energy output of the engine. More horsepower = more energy. This does not, however, mean faster, or better acceleration. Not all of the energy produced by the engine will make it to the wheels. Most is lost in the form of heat. Torque is what will push you back into your seat.
What does the cooling system do within the engine?
It cycles coolant through the engine. Heat from the engine is transferred to the coolant through a heat exchange. The heated coolant then cycles through the system to the radiator, where heat from the coolant undergoes another heat exchange, transferring heat from the coolant to the air which passes through the radiator. Heat will also transfer from the motor to the air forced over the motor by the engine fan.
What does the cooling system do within an engine?
It cycles coolant through the engine. Heat from the engine is transferred to the coolant through a heat exchange. The heated coolant then cycles through the system to the radiator, where heat from the coolant undergoes another heat exchange, transferring heat from the coolant to the air which passes through the radiator. Heat will also transfer from the motor to the air forced over the motor by the engine fan.
