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Why ac motors are not used in railways?
Ac motor has a low starting torque so that DC series motor used in railways cause DC motor has high starting torque
Is current proportional to torque?
Yes, current is generally proportional to torque in electric motors. The torque produced by a motor is directly related to the current flowing through its windings, as described by the motor's torque equation. This relationship holds true in many types of motors, such as DC and stepper motors, where an increase in current typically results in an increase in torque output, assuming other factors remain constant. However, the specific proportionality can vary based on the motor design and operational conditions.
What is meant by torque in ac machines?
'Torque' applies to any motor, not just to a.c. motors. It is a turning moment, defined as distance multiplied by the force acting at right-angles to the shaft.
What is an ac motor?
An AC motor is an electric motor that runs on alternating current, like household electricity, as opposed to a DC motor that runs on direct current from a battery. Most AC motors work from the mains supply, which has a frequency of 50Hz in the UK and 60Hz in the USA. Other types are available that work like stepper motors and need a specialist supply to run them.
What the main different between shunt motor and induction motor and AC motors?
induction motor is AC motor also synchronic motors are AC motors but second one has not slip but first one has slip . shut motor is DC motor
Why ac motors are not used in railways?
Ac motor has a low starting torque so that DC series motor used in railways cause DC motor has high starting torque
Is current proportional to torque?
Yes, current is generally proportional to torque in electric motors. The torque produced by a motor is directly related to the current flowing through its windings, as described by the motor's torque equation. This relationship holds true in many types of motors, such as DC and stepper motors, where an increase in current typically results in an increase in torque output, assuming other factors remain constant. However, the specific proportionality can vary based on the motor design and operational conditions.
Are the fan motors on fanuc ac spindle motors ac or dc?
usually ac 110v even on the dc motors
What is meant by torque in ac machines?
'Torque' applies to any motor, not just to a.c. motors. It is a turning moment, defined as distance multiplied by the force acting at right-angles to the shaft.
In what sense dc motor is better than ac motor?
DC motors can spin at a much faster speed and have higher starting torque.
What is an ac motor?
An AC motor is an electric motor that runs on alternating current, like household electricity, as opposed to a DC motor that runs on direct current from a battery. Most AC motors work from the mains supply, which has a frequency of 50Hz in the UK and 60Hz in the USA. Other types are available that work like stepper motors and need a specialist supply to run them.
Can you use AC in motor?
AC current is used in motors.
How can you determine the difference between an AC or DC electric motor?
Direct current or DC electric motors work for situations where speed needs to be controlled. DC motors have a stable and continuous current. DC motors were the first and earliest motors used. They were found, however, to not be as good at producing power over long lengths. Electric companies found using DC motors to generate electric did not work because the power was lost as the electric was transmitted. Brush DC motors use rings that conduct the current and form the magnetic drive that powers the rotor. Brushless DC motors use a switch to produce the magnetic drive that powers the rotor. Direct current motors are often found in appliances around the home. Alternating current or AC electric motors are used differently based on what type of AC motor it is. Single phase AC motors are known as general purpose motors. They work well in many different situations. These AC motors work great for systems that are hard to start because they need a lot of power up front. Three phase, also called polyphase, AC motors are usually found in industrial settings. These motors also have high starting power built transmit lower levels of overall power. AC power gets its name from the fact that it alternates in power. The amount of power given off by an AC motor is determined by the amount of power needed to operate the system. garyDC motors are of mainly 3 types.series motors, shunt motors, and compound motors. DC motors are mainly used where high torque is required from less speed (rpm),and a constant rpm can be maintained.Used mainly in : lathe ,drill machines, grinding machines, compressors and so on.Ac machines have less expenses. Used widely because Ac is more popular. They have less torque on slow speeds.Used on cooling fans, water pumps etc.
Conclusion of ac motors?
there are many types of ac motor, each of those work on a specific/ certain task. Ac motors are really helpful to world today
Why are the ac series motors preferred for electric traction?
ac motor is nothing but induction motor.So check out for characteristics of induction motors.
What do torque arms do?
Torque arms are used to prevent axle rotation in hub motors.
Why does modern hybrids use ac synchronous motor instead of dc series motors?
Toyota uses AC motors, Honda uses DC motors. It varies with design goals.
