A capacitor-start system will limit the current drawn by an induction machine by correcting the devices poor power factor during the start up. This limits the current needed to start the device without using any real power.
A resistance-start system will limit the starting current by drawing current unto the resistor instead of the induction machine. The real power used by the resistor is turned into heat and lost.
A capacitive-start system will use no real power and will not create excess heat, it will be more expensive to initially purchase.
motor speed control.used in battery backup systems
The 3PH motor has no internal contacts for a centrifugal switch and are therefore more durable when switched on and off frequently,
The dis advantage is that it takes longer to cool the motor as to a liquid cooling it. You can mess up your motor alot quicker also.
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.
For speed reducer gearbox just want to clarify if i can use the worm gear side of the gearbox for the installation of drive motor instead of mounting it on the enveloping worm? what is the advantage and disadvantage
The compound DC motor has the advantage of both, constant speed feature of the shunt motor and the capability to handle high starting torque feature of series motor.
to speed up the motor.
What is the advantage and this advantage of a forward reverse control of a motor
motor speed control.used in battery backup systems
Caravan motor movers offer many advantages. Their main advantage is their ability to move the motor vehicle automatically, which includes turning and stopping.
The 3PH motor has no internal contacts for a centrifugal switch and are therefore more durable when switched on and off frequently,
You still need the same horsepower. The advantage of the three-phase motor is that it will draw lower current.
You should clarify, advantage compared to what: for instance muscle power, gasoline engine, etc.
The dis advantage is that it takes longer to cool the motor as to a liquid cooling it. You can mess up your motor alot quicker also.
The newest acquisition to the Kenan Advantage Group was Transport Service Co., as of October of 2014. Transport Service Co. is an Illinois based motor service carrier company.
An advantage of using an electromagnet in an electric motor is that its magnetic field can be easily controlled by adjusting the current flowing through the coil, allowing for variable speed and torque control. This makes electromagnets more versatile compared to fixed-strength permanent magnets in electric motors.
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.