Bharat Gears Electrical Engineer Interview Questions, Process, and Tips

A forward reverse motor circuit diagram is used to control the direction of rotation of a motor.

• The circuit typically includes a power supply, motor, forward and reverse switches, and possibly a control relay.

• When the forward switch is activated, the motor rotates in one direction, and when the reverse switch is activated, the motor rotates in the opposite direction.

• The control relay may be used to prevent both the for...read more

Star delta circuit diagram is a method used to reduce starting current in induction motors.

• Star delta starter is used for starting induction motors

• In star connection, motor windings are connected in a star configuration for reduced voltage during starting

• After a certain time, the windings are switched to a delta configuration for full voltage operation

• This method helps in reducing starting current and mechanical stress

Thermocouples are temperature sensors that consist of two different metals joined together, generating a voltage proportional to the temperature difference.

• Thermocouples are commonly used in industrial applications for temperature measurement.

• Types of thermocouples include Type K (chromel/alumel), Type J (iron/constantan), and Type T (copper/constantan).

• Each type has a different temperature range and accuracy level.

• The...read more

An oxygen probe is a device used to measure the concentration of oxygen in a gas or liquid.

• Oxygen probes typically consist of a sensing element, a reference electrode, and an electrolyte.

• The sensing element generates a voltage signal proportional to the oxygen concentration.

• The reference electrode provides a stable reference voltage for accurate measurements.

• The electrolyte allows oxygen ions to pass through, creating ...read more