Techno Concepts Electrician Interview Questions and Answers

An induction motor works by inducing a magnetic field in the rotor through electromagnetic induction.

• The stator creates a rotating magnetic field

• This induces a current in the rotor, creating a magnetic field

• The interaction of the two fields causes the rotor to rotate

• Induction motors are commonly used in industrial and residential applications

DC motors use direct current to produce rotational motion while induction motors use alternating current and electromagnetic induction.

• DC motors have a commutator and brushes while induction motors do not.

• DC motors have a constant speed while induction motors have a variable speed.

• DC motors are more efficient at low speeds while induction motors are more efficient at high speeds.

• DC motors are commonly used in small app...read more

Arc welding machine is operated by connecting the electrode holder to the positive terminal and the workpiece to the negative terminal.

• Ensure the machine is turned off before connecting the cables.

• Select the appropriate electrode for the material being welded.

• Adjust the amperage according to the thickness of the material.

• Hold the electrode holder at a 90-degree angle to the workpiece.

• Strike an arc by tapping the electr...read more

AHU should be worked until the desired temperature and humidity levels are achieved.

• Check the temperature and humidity levels required for the space being served by the AHU.

• Adjust the AHU settings to achieve the desired temperature and humidity levels.

• Monitor the AHU performance to ensure it is maintaining the desired levels.

• Perform regular maintenance on the AHU to keep it functioning properly.

• Consult with a licensed ...read more

I have 10 years of experience as an electrician.

• I have been working as an electrician for the past 10 years.

• During my career, I have gained extensive experience in various electrical systems and equipment.

• I have successfully completed numerous electrical installations, repairs, and maintenance tasks.

• I am familiar with electrical codes and safety regulations.

• I have worked on both residential and commercial projects, han...read more

Star delta connection is a type of electrical connection used to reduce the starting current of a motor.

• It is used in high-power applications where the starting current of the motor is very high.

• It involves connecting the motor windings in a star configuration during starting and then switching to a delta configuration during operation.

• This reduces the voltage applied to each winding during starting, thereby reducing t...read more

My typical day as an electrician involves inspecting electrical systems, repairing faulty wiring, and installing new fixtures.

• Start the day by reviewing work orders and planning the day's tasks

• Drive to job sites and inspect electrical systems for any issues

• Repair or replace faulty wiring, switches, and outlets

• Install new fixtures, such as ceiling fans or light fixtures

• Communicate with clients and provide updates on pro...read more

Electricity is the flow of electrons through a conductor.

• Electricity is a form of energy that powers our homes, businesses, and devices.

• It is created by the movement of electrons from one atom to another.

• Electricity can be generated from various sources such as coal, wind, solar, and hydro power.

• It can be dangerous if not handled properly and can cause electric shock or fire.

• Electricity is measured in units of volts, a