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What is the relation between frequency and torque?
In an AC motor, torque is directly proportional to frequency. This means that as the frequency of the power supply increases, the torque produced by the motor also increases. Conversely, decreasing the frequency leads to a decrease in torque.
The turning force produced by a motor is called?
torque is one name. For more please see the wikipedia article.
What is armature reaction in dc machines?
Armature reaction is the phenomenon in DC machines where the magnetic field produced by the current flowing in the armature windings interacts with the main magnetic field produced by the field windings. This interaction can distort the main magnetic field, causing changes in the machine's performance such as voltage regulation and torque production. Measures such as interpoles or compensating windings are used to counteract the effects of armature reaction in DC machines.
What is the difference between speed and torque control?
Speed control is used to regulate the speed of a motor by adjusting the voltage or current supplied to it. Torque control, on the other hand, focuses on regulating the amount of force or rotational power produced by the motor. Speed control is more about maintaining a desired speed, while torque control is about adjusting the motor's output force.
What is meant by Reluctance Torque?
Reluctance torque is the torque generated in a reluctance motor due to the tendency of the rotor to align itself with the stator magnetic field. It occurs as a result of the variation in reluctance in the magnetic path between the rotor and stator. This torque is responsible for the motion of the motor and is one of the main torque components in reluctance motor operation.
What type of dc motor is suitable for variable torque operation?
A shunt-wound DC motor can maintain its speed well when the load torque varies.
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 torque and current proportional?
Sometimes, for example in a separately excited dc motor. But in a series-wound dc motor the torque is proportional to current-squared, which gives the motor a very high starting torque and this makes series motors very popular for traction.
Which of the following Dc motor is suitable for high starting torque?
capacitor start motor
What is starting torque?
The torque which is produced during the starting of motor is simply called as starting torque.
Will a 12 dc volt 8 amp power supply run a 12DC volt 9 amp motor?
Yes but only up to a load torque of 8/9 of the rated torque.
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 advantage and disadvantage of DC motor?
Advantage over?DC motors used to be preferred where precise control and variability of rotation speed were desired, but modern motor design and electronic controls have very largely negated that advantage.A series motor is useful mainly for driving a tram or bus because the torque is proportional to the square of the current. That means that a very large torque is produced for starting up and no gearbox is necessary. The motor is started with a current-limiting resistor which is switched down by the driver or automatically as the speed builds up.
What is Advantages of using a series DC motor?
The DC series motor is a high torque motor. so that it can pull heavy loads such as traction, lifts etc., the control of speed of a DC series motor is very smooth and easy.
What are the advantages of using a DC motor over an AC motor for garage door openers?
Usually a DC motor can be expected to deliver higher torque in a smaller size package.
What is the effect of field current on dc motor?
The field current of a dc motor provides the magnetic field that allows the motor to develop a torque when current flows through the armature..
Why no load-speed of a dc series motor is very high?
high torque
