Which types of motors develop the highest starting torque?
Class D motors have the highest starting torque (LRT) coupled with low starting current due to high slip ( 5% to 13% at FLT). The high slip results in lower speed. The speed regulation is poor.
Which was highest starting torque?
Due to greater phase difference capacitor Start motors have very high starting torque for a single-phase AC motor.
Which motor has a poor starting torque?
When a capacitor short-circuits, the winding in the motor may burn out. When a capacitor deteriorates or opens, the motor has poor starting torque. Poor starting torque may prevent the motor from starting, which will usually trip the overloads.
Why torque of a DC motor is high?
It is clear from the above characteristics of DC Series Motor that, higher the armature or load current, higher is the torque till the magnetic flux causes saturation. Once saturation occurs, the flux will no longer increase in proportion to the increment in current and thus limits the increase in torque.
Which has more torque AC or DC?
AC motors are generally considered to be more powerful than DC motors because they can generate higher torque by using a more powerful current. However, DC motors are typically more efficient and make better use of their input energy.
Which induction motor has maximum speed?
Synchronous and full load speed of amplitude current (AC) induction motors
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