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When you rotate the handle of the electric generator faster does it deliver more less or the same voltage?
Wiki User
∙ 13y ago
The speed of a generator only effects the frequency. Most generators operate at 1800 RPM. The output voltage is controlled by varying the field excitation voltage.
Wiki User
∙ 13y ago
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Does the voltage output increase when a generator is made to spin faster?
You would have to apply a higher voltage from outside - for example, in the case of DC, connect a battery that provides more voltage, or connect more than one battery in series; or in the case of AC, use a transformer to increase the voltage.
How do youelectrical synchronize?
You synchronize a generator to the grid by matching voltage and phase. Usually, but this depends on the particular system, you bring the generator's voltage to slightly higher than the grid, and its speed to slightly faster. At the moment of phase match, or slightly before, you close the tie-in breaker and simultaneously close the steam bypass valves. The generator should immediately pick up load. You then adjust exciter voltage to get your MVars right, and trim as needed.
Why a given generator frequency is dictated by the size of the magnetic flux?
A generator's frequency is dictated by the power system frequency, and the number of poles in the generator. For 60 Hz power and a generator designed with two poles, the generator must turn at 3600RMPs (60 Hz * 60 seconds / minute). The magnetic flux is what induces the current in on the output winding. Spinning a synchronous generator faster or slower is not done to control the magnetic flux. The field winding voltage is varied to control this, and in turn control the output of the generator.
Is an electric train faster then a steam one?
a electric train is faster than a steam engine
Why does the induced emf known as back emf?
In a dc motor the voltage generated in the armature acts against the supply voltage. The current is the voltage difference divided by the armature resistance. If the rotor is turned faster so that the back emf exceeds the supply voltage, the current goes the other way and the motor has become a generator.
What are the differences between the parts of a generator and the parts of a motor?
In principle a generator is the same as a motor. In a dc motor the voltage generated by the rotating armature is slightly less than the supply voltage which causes power to flow in from the supply. If an engine is then coupled to the shaft causing it to rotate faster, then it generates more voltage and power flows back into the supply. That is how a motor becomes a generator.
How do you make a 1998 club car go faster?
Depends if its gas or electric, either way a larger motor, in electric you can up the voltage a little
Does the voltage output increase when a generator is made to spin faster?
You would have to apply a higher voltage from outside - for example, in the case of DC, connect a battery that provides more voltage, or connect more than one battery in series; or in the case of AC, use a transformer to increase the voltage.
How do youelectrical synchronize?
You synchronize a generator to the grid by matching voltage and phase. Usually, but this depends on the particular system, you bring the generator's voltage to slightly higher than the grid, and its speed to slightly faster. At the moment of phase match, or slightly before, you close the tie-in breaker and simultaneously close the steam bypass valves. The generator should immediately pick up load. You then adjust exciter voltage to get your MVars right, and trim as needed.
How is an electric motor different than an electromagnet generator?
Some types of motor can work equally well as a generator. A DC motor runs on a DC supply and supplies a mechanical load. If the load is removed the motor will free-run a little faster. But if the shaft is then driven faster than that, the current flows the opposite way and the motor has become a generator.
Will a 240 50Hz run on 220 60Hz?
It's OK but if it's a motor it might run 20% faster. It will run faster by 10 Hz and will tend to take more current to deliver the rated KW load, since the rated voltage is 240 but applied voltage is 220Volts
What is the difference between voltage restrained overcurrent protection and voltage controlled overcurrent protection?
The voltage-restrained overcurrent relay adjusts the pickup setting and characteristic curve of the overcurrent function based on the system voltage. The relay is set pickup greater than overload, and sensitivity increases as the voltage drops. The voltage-controlled overcurrent relay uses an undervoltage element to supervise the operation of the overcurrent element. When the voltage drops below a predetermined level, the undervoltage element permits the operation of the time overcurrent units. Voltage-restrained overcurrent relays can provide faster backup protection than voltagecontrolled overcurrent relays, particularly in cases where the generator voltage does not drop significantly below rated voltage during fault conditions. If the generator voltage always drops below a given voltage level for all faults in which operation is required, the voltage-controlled overcurrent unit may be set to provide faster overall clearing speed
Why speed is decreased when field current increases in dc motor?
Because with more field, the armature produces the same voltage at less speed. The voltage generated by the motor must always be less than the supply voltage. A motor that is driven faster than it wants to go becomes a generator.
Why do bike lights get brighter when pedal faster?
If the lights are powered by a generator driven by the wheel, then you get more power from the generator the faster the wheels spin.
What you need to change in the generator to convert from 50 Hz to 60Hz?
The frequency is based on the RPM (speed) of the generator. If you over ride the governor on bigger generator or move the speed control upwards on smaller units you will be able to reach 60 Hz. Keep in mind though the voltage will increase also.
Why a given generator frequency is dictated by the size of the magnetic flux?
A generator's frequency is dictated by the power system frequency, and the number of poles in the generator. For 60 Hz power and a generator designed with two poles, the generator must turn at 3600RMPs (60 Hz * 60 seconds / minute). The magnetic flux is what induces the current in on the output winding. Spinning a synchronous generator faster or slower is not done to control the magnetic flux. The field winding voltage is varied to control this, and in turn control the output of the generator.
Why is a generator of a car is called an alternator?
Generators were used in vehicles up to the mid 1960's. They used dc voltage and were slow to replenish batteries. You had to drive approx. 7 miles at 30 mph or faster just to recharge battery to level prior to starting vehicle. Alternators replaced generators in the late 1960's. Alternator use ac voltage to recharge battery and will charge battery at vehicle idle. Much faster and more efficient than the generator. It is not unusual for an alternator to last the life of a vehicle where a generator would require a rebuild or replacement during the life of vehicle.
