AECOM Senior Electrical Engineer Interview Questions and Answers for Experienced

Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

• Ohm's law is represented by the equation I = V/R, where I is the current, V is the voltage, and R is the resistance.

• It is named after Georg Simon Ohm, a German physicist who first formulated this law.

• This law is applicable to all types of circuits, including DC and AC circuits.

• It is use...read more

The Loto system stands for Lockout/Tagout, a safety procedure used to ensure that dangerous machines are properly shut off and not started up again during maintenance or servicing.

• Loto system involves locking the energy-isolating devices with individual lockout devices to prevent the machine from being turned on

• Tagout involves placing a tag on the locked device to indicate that it should not be operated

• Employees workin...read more

The process for a project involves planning, design, implementation, testing, and commissioning.

• Define project scope and objectives

• Create a project plan with timelines and milestones

• Design the system or product

• Procure necessary materials and equipment

• Implement the design and build the system or product

• Test the system or product to ensure it meets requirements

• Commission the system or product for use

• Provide ongoing suppo...read more

SAP procedure for UPS vendor is a process for managing vendor data in the SAP system.

• The SAP procedure for UPS vendor involves creating and maintaining vendor master data in the system.

• It includes defining vendor attributes such as payment terms, delivery schedules, and contact information.

• The procedure also involves creating purchase orders and managing invoices from the vendor.

• Examples of UPS vendors include APC, Eat

The maintenance procedure of DG involves regular checks and servicing to ensure optimal performance.

• Regularly check oil and coolant levels

• Inspect air filters and replace if necessary

• Clean and inspect spark plugs

• Check battery and charging system

• Perform load bank testing

• Schedule routine maintenance with a qualified technician

• Keep a maintenance log for record keeping

ATS scheme stands for Automatic Transfer Switch scheme used in power systems.

• ATS scheme is used to transfer power supply from one source to another in case of power failure.

• It is commonly used in backup power systems to ensure uninterrupted power supply.

• ATS scheme can be implemented using mechanical or electronic switches.

• It is important to ensure proper coordination between the ATS and protective devices to avoid any ...read more

Address the issue calmly and professionally, listen to their perspective and try to find a solution together.

• Remain calm and avoid getting defensive

• Listen to their perspective and try to understand their point of view

• Communicate clearly and respectfully

• Try to find a solution together

• If necessary, involve a mediator or supervisor

Transformer PM involves regular maintenance and inspection to ensure optimal performance.

• Perform regular visual inspections to check for signs of wear and tear

• Test insulation resistance to ensure it meets standards

• Check oil levels and perform oil analysis to detect any contaminants

• Inspect and tighten connections

• Perform load and temperature tests

• Schedule maintenance based on manufacturer recommendations

• Examples of maint...read more

Transformers are protected by various methods to prevent damage from faults and overloads.

• Overcurrent protection using fuses or circuit breakers

• Thermal protection using temperature sensors and alarms

• Buchholz relay protection for detecting internal faults

• Differential protection for detecting external faults

• Ground fault protection using ground fault relays

• Lightning arrestors for protection against lightning strikes

• Oil le...read more

Project flow steps involve planning, design, implementation, testing, and maintenance.

• Planning: Define project scope, objectives, and requirements.

• Design: Develop a detailed plan and create schematics.

• Implementation: Install and integrate components.

• Testing: Verify functionality and performance.

• Maintenance: Monitor and update system as needed.

• Examples: Building a power distribution system, designing a control panel for