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the motor should only rotate in a rated speed,if the speed is more than rated speed then the motor will be damaged........to control the speed of motor a rheostat should be connected to the field side of motor......by variying the rheostat we can control the speed of motor......
What else can I help you with?
Can a bad ac resistor cause the ac not to work?
Yes, a faulty AC resistor can cause the air conditioning system not to work properly. The resistor controls the speed of the blower motor, and if it fails, the motor may not operate at all or may only work at one speed. This can lead to inadequate airflow and ineffective cooling. Therefore, addressing a bad AC resistor is essential for restoring proper function to the AC system.
Where ac voltage controllers are used?
AC voltage controllers are used for controlling the speed of universal motor or induction motor by changing the firing angle :) -vinodh gav
How do you change the speed of motor without change pole and frequency?
On an AC motor you basically vary the frequency on a DC you can vary the voltage.
Is it possible to increase speed of AC Slip Ring Induction Motor?
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Why is the torque speed characteristics of a universal motor on ac source different from the torque speed characterisctic of the same motor on a dc source?
The torque-speed characteristics of a universal motor differ between AC and DC sources primarily due to the effects of reactance and phase differences in AC operation. When powered by AC, the inductance of the motor introduces additional impedance, which can lead to a reduction in torque at higher speeds due to increased reactance. In contrast, when powered by DC, the motor operates without these reactance effects, allowing for a more linear torque-speed curve with higher torque at lower speeds. Consequently, the performance characteristics shift significantly between the two power sources.
What is the difference between Variable Speed Drive and Variable Frequency Drive?
A variable frequency drive (VFD) refers to AC drives only and a variable speed drive (VSD) refers to either AC Drives or DC Drives. VFD's vary the speed of an AC motor by varying the frequency to the motor. VSD's referring to DC motors vary the speed by varying the voltage to the motor.
Can a bad ac resistor cause the ac not to work?
Yes, a faulty AC resistor can cause the air conditioning system not to work properly. The resistor controls the speed of the blower motor, and if it fails, the motor may not operate at all or may only work at one speed. This can lead to inadequate airflow and ineffective cooling. Therefore, addressing a bad AC resistor is essential for restoring proper function to the AC system.
Why ac drive convert ac voltage in dc?
It is done to control the speed of the motor.
How do you control the speed on an ac motor?
the speed of ac motor can be controlled by controlling the synchronous speed (Ns=120f/p). and synchronous speed can be varried or controlled by changing frequency or by changing poles. but practicaly pole can not be changed. but we can change the frequency. the frequency can be VFD (Variable frequency Drives). so the speed of ac motor can be chaged or controlled by VFD.
Would an ac heater blower motor resistor stop your ac from working?
Yes, a malfunctioning blower motor resistor can prevent your AC from working properly. The resistor controls the speed of the blower motor; if it fails, the blower may not operate at all or may only work at certain speeds. This means that even if the AC system is functioning, you may not get any airflow, resulting in a lack of cooling. If you're experiencing issues with your AC, checking the blower motor resistor is a good place to start.
What determines the speed of an AC motor?
The higher the frequency the higher the RPM the motor will turn
Can a DC series motor with speed control be connected on AC supply?
A dc series motor with speed control can be connected on ac supply because dc machines are totally reversible.
How does an ac drive variable speed drive operate to control speed?
Answer #1 It varies the frequency fed to a synchronous AC motor. As the frequency changes, so does the motor speed. Answer #2 The formula for calculating speed is: (120 X motor supply frequency) / number of poles 120 is a fixed number, so is the number of poles for a given motor, hence the only variable is the motor supply frequency. AC drives vary the motor supply frequency in turn achieving speed control.
What is a motor design that works with either an AC source or a DC source?
A variable speed module in a motor can work with ac or dc source
Could a bad blower motor resistor also affect the AC switch?
Yes, a bad blower motor resistor can affect the AC switch's functionality. The resistor controls the speed of the blower motor, so if it malfunctions, it may prevent the blower from operating at the selected speed. This can lead to inconsistent airflow and might make it seem like the AC switch itself is not working properly. In some cases, it could also affect the overall climate control system in the vehicle.
What type of ac motor will operate at a constant speed from no load to full load?
The Synchronous motors will operate at a constant speed from noload to fullload. Even it is classified as an AC motor, we have to fed the motor both AC and DC supplies. That we have to supply DC to the Field (Normally Rotor) and AC to the Armature (Normally Stator).
What is ac drive and how it works?
An AC Drive used for a speed control of a motor by using vary frequency.
