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Will a DC motor actually produce voltage if it is spun in reverse?
Wiki User
∙ 14y ago
It'll produce voltage if you spin it forwards, too. The only difference between a DC motor and a DC generator is what you use it for.
A long time ago, cars had DC generators on them instead of AC alternators. When you replaced a generator, you had to "polarize" it so it would make electricity. You hooked it up to your battery and let it run, as a motor, for a few seconds. Don't try that with an alternator because you'll break it.
If you're looking for a neat little elementary-school science project, you can use little Radio Shack electric motors as generators for things like windmills, water wheels, dynamos turned by bicycle tires...
Actually, yesA motor works by passing current through the conductors of an electromagnet (the rotor or armature) suspended in the magnetic field of a permanent magnet (or another electromagnet). The rotor is the moving part, that is, the part that spins. If instead of energizing the rotor's windings, you turned the rotor by hand, you would indeed induce a current in the rotor's windings. Basically you have created a generator.
Motors work on the basic principle of a current going through a conductor producing a magnetic field around the conductor. If you reverse that you have a magnetic field around a conductor which produces current.
Wiki User
∙ 14y ago
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What is excitation of a DC motor?
DC Voltage
How is a DC permanent-magnet motor reversed?
Reverse the polarity of armature windings of the motor.
Can you reverse the polarity of AC and DC?
We have the capacity to reverse the polarity of a DC voltage, at least as regards what we apply it to. When we consider a DC motor, like, say, the ones in the little "robot wars" we see on TV, the motors can be run in reverse by reversing the polarity of the applied DC voltage. We normally consider AC as already reversing its polarity. It is, after all, AC, which is alternating current. The current alternates because the voltage alternates. We'll avoid any further discussion of the polarity of AC voltages here and leave it at that.AnswerThe problem, here, is that 'polarity' has several different meanings.Polarity, in the sense of 'electric charge' cannot really be applied to a voltage (potential difference) although it can be to a potential (although the polarity is relative; it depends on the point of reference).Polarity, in the sense of 'direction', can be applied to a voltage. For example, is the voltage acting clockwise or counter clockwise around a circuit?Polarity, in the sense of 'connection', can be applied to a voltage. For example, it's important that the line conductor is connected to the centre terminal of an Edison lamp holder or to one or other of the slots in a receptacle (power socket).
What would cause a meter to read negative voltage across a DC motor?
A DC motor generates power when it is rotating even when no supply is connected.
Can you wire a Dayton electric motor to run backwards?
Yes, just reverse the start winding circuit.
Why will a dc motor produce v but not an ac motor?
Motors do not produce voltage, current, or power. They use them.they produce mechanical output.
When in drive it goes reverse?
if the generated emf in motor is greater than supply voltage means the drive will goes to reverse
What happens when ac supply given to dc motor justify?
The motor will slightly oscillate if its enough voltage but will not run properly as the voltage is changing phase. So the motor is trying to go forward and then reverse say 60 times a second if its hook to a wall socket.
Will you produce a 3 phase voltage if you rotate a 3 phase motor physically at its specified rpm?
yes
What is the voltage tolerance of a standard electric motor?
the voltage tolerance of a standard electric motor is
How do i switch a 3 phase motor from low to high voltage?
You can't. You must supply the motor with it's required voltage. If it's a dual voltage motor, follow the wiring schematic on the motor nameplate to switch from low to high voltage.
Does the alternating current supplied to the armature winding of a DC motor gets converted to dc by a commutator before it flows through the armature coil of the DC motor?
The commutator is a rotating switch, which reverse the polarity of the generated voltage every half-cycle. So it acts to rectify the output voltage.
Can you run a 12V DC motor with a single 1.5V battery if you don't care about motor speed?
No. The motor was designed to run on a specific voltage and any variance from it will not work. The amperage of the motor is what you should be looking at. A single 1.5 volt battery neither has the voltage nor the capacity to produce any thing close to the amperage you would need to run the 12 volt motor.
Internal circuit components of a ceiling fan?
The most important parts of the fan are- 1. Motor (Stator and Rotor) 2. Capacitors 3. Triple Capacitors (to control the voltage entering the motor) 4. Reverse Switch
How do you change the direction of a 3-phase induction motor?
Reverse any two line leads connected to the motor will reverse the directional rotation of the motor
What will happen to a motor if it is supplied with lower voltage than its rated voltage?
The amperage to the motor will go higher.
Can a voltmeter be used to measure voltage in and out of a starter motor?
Voltage flow into a starter motor, never out of it. Use the voltmeter to measure the voltage at the starter motor before starting to crank and then whilst it is cranking. (Before cranking, the voltage appears across the starter motor relay only.)
