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The speed of Earth's poles refers to their movement due to the planet's axial precession and tectonic activity. Generally, the geographic poles drift at a rate of several centimeters per year, primarily due to the redistribution of the Earth's mass and tectonic shifts. Additionally, the magnetic poles are shifting at a much faster rate, moving tens of kilometers per year. This movement affects navigation and positioning systems, necessitating regular updates to maps and navigational tools.
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What are the stator of poles?
In an Induction motor synchronous speed is inversely proportion to No. of poles if we increase No. of poles speed will decrease they are derived through formula as under P= 120*f/Ns Where P= No. of Poles f= Rated frequency Ns= Synchronous speed of flux.
The speed of a synchronous motor with 60 Hz power supply is?
Speed (RPM) = 120 x f / p f = frequency p = number of poles. 2 poles, speed = 3600 RPM 4 poles, speed = 1800 RPM
How many poles are within a DC motor?
It depends on the motor. They can be purchased with different numbers of poles. The number of poles mainly changes the speed of the motor.
What is the effect of increasing number of poles on the speed of an induction motor?
As the number of poles (P) increases, the speed of an induction motor (N) decreases. As seen by the formula: N=(120*f)/P
How 3 phase motors Speed is paired to number poles?
Directly propotional
Why the speed decreases when the poles increases in a motor?
because N=(120*f)/P where N= speed in rpm f= frequency in Hz P= no. of poles as the relations shows above it is cleare that speed of machine inversly proportional to no. of poles.. so as the poles increses, speed of the machine decreses
What are the stator of poles?
In an Induction motor synchronous speed is inversely proportion to No. of poles if we increase No. of poles speed will decrease they are derived through formula as under P= 120*f/Ns Where P= No. of Poles f= Rated frequency Ns= Synchronous speed of flux.
The speed of a synchronous motor with 60 Hz power supply is?
Speed (RPM) = 120 x f / p f = frequency p = number of poles. 2 poles, speed = 3600 RPM 4 poles, speed = 1800 RPM
How many poles are within a DC motor?
It depends on the motor. They can be purchased with different numbers of poles. The number of poles mainly changes the speed of the motor.
What two factors determine synchronous speed?
Synchronous speed is determined by the number of poles on the motor and the frequency of the power supply. Mathematically, synchronous speed (in RPM) can be calculated as 120 times the frequency of the power supply divided by the number of poles.
What is the effect of increasing number of poles on the speed of an induction motor?
As the number of poles (P) increases, the speed of an induction motor (N) decreases. As seen by the formula: N=(120*f)/P
What is the speed of the hp?
speed of the motor not depending the H P. It depends upon no: of poles in the stator and the supply frequency.
What is the relation between number of poles and rpm?
The number of poles in an electric motor is inversely related to its speed, measured in revolutions per minute (RPM). Specifically, the synchronous speed (RPM) of a motor can be calculated using the formula: RPM = (120 × frequency) / number of poles. This means that as the number of poles increases, the RPM decreases for a given frequency, and vice versa. Thus, motors with more poles typically operate at lower speeds compared to those with fewer poles.
How 3 phase motors Speed is paired to number poles?
Directly propotional
What determines the output frequency of an ac generator?
It's speed and the number of poles.
How do you find the slip in induction motor?
calculate the synchronous speed from the frequency & the no. of magnetic poles in the stator, then measure the actual speed of it with a tachometer, then subtract the actual speed from the synchronous speed.
If A train travels at a constant rate of speed how long does it takes to get to the 15th poles it takes 10 mins from the first pole to the tenth poles poles are equal distance to each other?
Uhhh 5 minutes
