Yes. Active power is proportional to the sine of the load angle. No load, no active power, hence zero load angle.rob1985 said:
No. You can say rotor magnetic field and stator magnetic field are aligned, or in other words, rotor is aligned with the resultant magnetic field.rob1985 said:
Load angle at no load is the angle between the supply voltage and the current in an AC electrical system when there is no load or resistance connected. It is also known as the power factor angle.
Load angle at no load is important because it indicates the efficiency of an electrical system. A lower load angle at no load means that the system is more efficient, while a higher load angle at no load means that the system is less efficient.
Load angle at no load is calculated using the cosine of the power factor angle. The power factor angle can be calculated using the ratio of the active power (in watts) to the apparent power (in volt-amperes).
The main factor that affects load angle at no load is the power factor. Other factors that can affect it include the type and quality of the electrical equipment, the length and type of electrical cables used, and the amount of electrical load connected to the system.
Load angle at no load can be improved by increasing the power factor of the system. This can be done by using power factor correction devices, such as capacitors, to reduce the amount of reactive power in the system. Additionally, using high-quality electrical equipment and minimizing the length of electrical cables can also improve load angle at no load.