What is the synchronous speed of a 10 pole motor?

600 rpm
A: A 10-pole motor would have 5-pairs of N-S poles. It would rotate at 50/5 = 10 rotations per second or 600 rpm (10 s-1 x 60 s/minute).

Are more Poles better?

However more poles means lower speed, lower losses in bearings but that will be largely offset by the larger size and higher mass of the rotating parts. More poles mean more RPM (revolution per minute) so it’s faster than the less poles! and thicker wire more power than thinner one.

How do Poles affect motor speed?

More poles result in a lower motor speed: if all other factors are equal, a 4-pole motor will rotate at half the speed of a 2-pole motor. A 60 Hz power supply changes polarity 60 times per second, and a two-pole motor will spin at 3,600 rpm when connected to this source. A four-pole motor will only rotate at 1,800 rpm.

Why do we use synchronous motors?

In higher power industrial sizes, the synchronous motor provides two important functions. First, it is a highly efficient means of converting AC energy to work. Second, it can operate at leading or unity power factor and thereby provide power-factor correction.

What speed is an 8 pole motor?

An 8 poles machines’ synchronous speed is 750 RPM. As the number of poles is increased, the magnetizing current of the motor increases and the motor can deliver the higher starting as well as the running torque. The frame size of the motor increase with an increase in the number of poles.

What is pole in motor?

The pole count of a motor is the number of permanent magnetic poles, north and south, on the rotor. There is always the same number of north and south poles on the rotor. For example, in a 12 pole motor, there are 6 north poles and 6 south poles. This motor would also be considered a 6 pole-pair motor.

What is the synchronous speed of an 8-pole motor?

As speed decreases, torque increases so an 8 pole motor has 4x the torque of a 2 pole motor (but 1/4 the speed). The synchronous speed of motor depends on number of poles so in order to achive different speed number of poles used are different. Synchronous speed = 3000, 1500, 1000, 750.

How many Poles are there in 8 poles motor?

General Manager (E&I) at Birla Corporation Limited (1992-present) 8 poles motor has 8S and 8N poles. The frame size of the motor increase with an increase in the number of poles. The synchronous speed of the motor is inversely proportional to the number of poles.

How does the number of Poles affect the speed of induction motor?

If number of poles decreases the speed of the induction motor increases. Poles are always in a pair Like N – Pole and S – Pole always exists in a magnetic system .

What happens if you halve the pole spacing in a motor?

In a 2-pole (single pole pair) motor the poles are spaced so that the rotating magnetic field makes a complete 360 degree rotation every phase period of the mains cycle. If you halve the pole spacing the field only rotates 180 degrees.