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If the DC excitation is reduced in a synchronous machine, the apparent power will generally decrease. This is because the reduction in excitation leads to a lower magnetic field strength, which can cause a decrease in the machine's ability to produce reactive power. As a result, the overall apparent power, which is the combination of real and reactive power, will also decline.
What else can I help you with?
If you increase the number of turns in the coil and move a magnet at the same speed will the speed increase or decrease?
no the strength of the magnetic field does not decrease because of the number of coils increases.
How does the degree of DC excitation affect pull-out torque?
The degree of DC excitation directly influences the pull-out torque of a motor. Higher levels of DC excitation increase the magnetic field strength, resulting in greater torque production and improved performance during load conditions. Conversely, insufficient excitation may lead to reduced torque capacity, causing the motor to struggle under load. Therefore, optimizing DC excitation is crucial for maximizing pull-out torque and ensuring efficient motor operation.
What happens to voltage when resistance is increased?
Ohms law is V=I X R. If resistance (R) is reduced and current (I) is constant, then voltage (V) must decrease. You can see from the equation that they are proportional to one another. If, however, R is reduced and V is held constant, then I must increase (I and R are inversely proportional). The only way V can increase is if either or both I and R increase.
What will happen to the speed of series motor when the supply voltage is reduced?
When the supply voltage to a series motor is reduced, the speed of the motor will also decrease. This is because a series motor's speed is directly related to the applied voltage; as the voltage drops, the current through the motor reduces, leading to a decrease in both torque and speed. Additionally, the reduced voltage results in a lower magnetic field strength, which further contributes to the decrease in speed. Thus, the motor will operate at a lower speed under reduced voltage conditions.
What happens when superheated steam pressure is reduced?
steam quality increase
What happen to the apparent power if the DC excitation is reduced?
'Apparent power' is a term used in a.c. circuits, NOT d.c. circuits.
If you increase the number of turns in the coil and move a magnet at the same speed will the speed increase or decrease?
no the strength of the magnetic field does not decrease because of the number of coils increases.
What is meant by regulation or an alternator?
Regulation of an alternator is varying or adjusting the d.c. current flow (excitation current) in the revolving field coil to control the output voltage. When an alternator is subject to varying load conditions, and therefore changing load resistance at the output, the output voltage will vary in response. When output voltage is reduced in response to increased load (reduced output resistance), the "voltage regulator" will respond by increasing the excitation current to increase the voltage output. If load is reduced, the generator will momentarily become over-excited and the ouput voltage will increase. The voltage regulator responds by decreasing excitation current, returning the generator output voltage to its nominal level.
How does the degree of DC excitation affect pull-out torque?
The degree of DC excitation directly influences the pull-out torque of a motor. Higher levels of DC excitation increase the magnetic field strength, resulting in greater torque production and improved performance during load conditions. Conversely, insufficient excitation may lead to reduced torque capacity, causing the motor to struggle under load. Therefore, optimizing DC excitation is crucial for maximizing pull-out torque and ensuring efficient motor operation.
What cause thrust to increase or decrease?
Thrust can increase when engine power is increased or when the angle of attack of the aircraft is increased. Thrust can decrease when engine power is reduced or when drag on the aircraft increases due to factors like airspeed or weight.
What happens to the diversity after fragmentation?
Fragmentation can lead to a decrease in genetic diversity within populations and increase isolation between populations which can then decrease overall species diversity in an area. This can result in reduced resilience to environmental changes and increase the risk of local extinctions.
Which service are mostly affected when number of people increase or decrease in an area?
Public transportation services are mostly affected when the number of people increase or decrease in an area. More people may lead to overcrowding and longer wait times, while a decrease in population may result in reduced routes or frequency of service.
When does friction need to be reduced?
Friction needs to be reduced when trying to increase the efficiency of machines or decrease wear and tear on components. It is also important to reduce friction in situations where smooth movement or minimal heat generation is required.
What is the amount of decrease if 92 is reduced by 35 percent?
The amount of decrease is 32.2.
What does it mean when chemists say that a reactant is reduced?
When chemists say a reactant is reduced, it means that the reactant gains electrons during the course of a chemical reaction. This typically involves a decrease in the oxidation state of the reactant, leading to an increase in its electron density.
A coat was reduced by 56 from the original price of 280 what is the percent of decrease?
This is a 20% decrease in price.
What is percent of decrease or increase?
A percent of decrease (percentage decrease) is when a value is reduced by a percentage of its original amount. e.g. 100 decreased by 15 percent is 85. A percent of increase (percentage increase) is when a value in increased by a percentage of its original amount. e.g. 100 increased by 15 percent is 115.
