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What else can I help you with?
How do you start a motor without a starter?
By the use of auto transformer and bridge rectifier we can start dc motor.
Which motor does not start on dc?
All AC motors except for a Series Motor.
Will a dc motor start if its field resistance is high?
Yes, it will still start.
Which of the following Dc motor is suitable for high starting torque?
capacitor start motor
How do you start a DC motor if there is no 3 point starter?
By the use of auto transformer and bridge rectifier we can start dc motor.
What would cause a meter to read negative voltage across a DC motor?
A DC motor generates power when it is rotating even when no supply is connected.
Would cause a meter to read negative voltage across a dc motor?
A DC motor generates power when it is rotating even when no supply is connected.
How do you differentiat dc motior and ac motor physicaly?
if you power an ac motor with dc or a dc motor with ac you will likely start smelling smoke and the motor will be damaged. If the motor is marked "3-phase", "shaded pole", or "induction" it is an ac motor! BTW, there are ac/dc motors that will run on both, they are wound very much like dc motors but a bit differently.
Why you have to connect DC supply to the induction motor?
To start an induction motor we have to excite field. The excitation is done by connecting the DC supply to the field winding's.
Why ac motors are not used in railways?
Ac motor has a low starting torque so that DC series motor used in railways cause DC motor has high starting torque
How you can solve the problem for one of a dc motor that connected to pulse width modulation and this motor didn't start?
check the brushes if you are getting dc out of the drive and the motor doesnt start the motor should also have full field to start with an extreme overload even a permanent magnet can be discharged or reversed this is assuming the pwm drive is ok
Why dc series motor cannot be start without any load?
If a DC series motor is started without load, the armature winding (winding that doesn't spin) current will be at a minimum, resulting in the motor going to maximum speed / runaway, which can cause things to fly apart. As Armature current increases, the speed of the motor will decrease. The armature current will be forced to increase / speed of the motor will be forced to decrease as more and more load is applied.
