Strategi Automation Solutions Applications Engineer Interview Questions, Process, and Tips

Torque and current have a direct relation in speed and torque control operation.

• Torque is directly proportional to current in an electric motor.

• Increasing current will increase torque, and decreasing current will decrease torque.

• In speed and torque control operation, adjusting the current supplied to the motor will directly impact the torque output.

• For example, in a DC motor, increasing the current supplied to the moto

VFD stands for Variable Frequency Drive, used to control the speed of an AC motor by varying the frequency and voltage supplied to the motor.

• VFDs improve energy efficiency by matching motor speed to the required load

• They provide soft start and stop functions, reducing mechanical stress on equipment

• VFDs can be used in various applications such as HVAC systems, pumps, conveyors, and fans

Pitch of a ball screw is the distance a nut advances in one revolution of the screw.

• Pitch is typically expressed in millimeters or inches.

• To calculate pitch, divide the lead of the screw by the number of starts.

• For example, if a ball screw has a lead of 10mm and 2 starts, the pitch would be 5mm.

Torque vs Speed graph shows the relationship between torque and speed of a motor.

• Torque is the rotational force produced by a motor, while speed is the rate at which the motor rotates.

• The graph typically shows torque on the y-axis and speed on the x-axis.

• The shape of the graph can vary depending on the type of motor and its characteristics.

• For example, a DC motor may have a linear relationship between torque and speed,...read more