ABB HSE Engineer Interview Questions and Answers

Current is the flow of electric charge in a circuit.

• Current is measured in Amperes (A)

• It is the rate of flow of electric charge

• Current flows from high voltage to low voltage

• In a series circuit, the current is the same at all points

• In a parallel circuit, the total current is the sum of the currents through each branch

Soft starters are preferred over star-delta starters for motor start and run due to their ability to reduce inrush current and provide smoother acceleration.

• Soft starters provide a gradual increase in voltage to the motor, reducing inrush current and mechanical stress on the motor.

• Star-delta starters provide a sudden increase in voltage, resulting in high inrush current and mechanical stress on the motor.

• Soft starters ...read more

Encoders used in industrial include absolute, incremental, linear, rotary, magnetic, and optical encoders.

• Absolute encoders provide a unique code for each position

• Incremental encoders provide a pulse output for each position change

• Linear encoders measure linear motion

• Rotary encoders measure rotational motion

• Magnetic encoders use a magnetic field to detect position

• Optical encoders use light to detect position

VFD parameters are settings that control the operation of a variable frequency drive.

• VFD parameters include frequency, voltage, current, acceleration/deceleration time, and motor overload protection

• Frequency parameter determines the speed of the motor

• Voltage parameter determines the amount of voltage supplied to the motor

• Current parameter determines the amount of current supplied to the motor

• Acceleration/deceleration t...read more

HIRA stands for Hazard Identification and Risk Assessment. It is a process used to identify potential hazards and assess the associated risks.

• HIRA involves identifying hazards and assessing the risks associated with them

• The process includes analyzing the likelihood and severity of potential incidents

• Examples of hazards that may be identified through HIRA include chemical spills, equipment malfunctions, and workplace vi