Junior Calibration Engineer Interview Questions and Answers

Connecting a 3 phase motor to 1 phase can cause motor damage and inefficient operation.

• Connecting a 3 phase motor to 1 phase can lead to overheating and reduced torque.

• The motor may not start or run at a slower speed than intended.

• The motor windings may get damaged due to unbalanced currents.

• Using a phase converter or rewiring the motor can be potential solutions.

DC motors produce back EMF through the interaction of the magnetic field and the rotating armature.

• Back EMF is generated when the armature of a DC motor rotates within a magnetic field.

• The back EMF opposes the applied voltage and is proportional to the speed of the motor.

• Back EMF is important for motor control and can be used to estimate motor speed.

• Ammeters measure the current flowing through a circuit.

• They are connected in series and have a low resistance to minimize voltag...read more

A temperature sensor is a device that measures temperature and converts it into an electrical signal.

• Temperature sensors can be contact or non-contact.

• Contact sensors include thermocouples, RTDs, and thermistors.

• Non-contact sensors include infrared sensors and thermopiles.

• Temperature sensors are used in a variety of industries, including automotive, aerospace, and food processing.