AECOM Interview Questions, Process, and Tips

Q1. How do you size Transformer ?
Ans. 
Transformers are sized based on load requirements and voltage levels.
• Determine the load requirements of the system

• Calculate the required kVA rating based on the load requirements

• Determine the voltage levels of the system

• Select a transformer with a kVA rating and voltage levels that meet the requirements

• Consider factors such as efficiency, temperature rise, and impedance when selecting a transformer
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Q2. How do you size DG ?
Ans. 
DG sizing depends on load demand, backup requirements, fuel availability, and budget.
• Calculate the total load demand of the system

• Determine the backup requirements and duration

• Consider the availability of fuel and its cost

• Evaluate the budget for the project

• Select a DG with appropriate capacity and efficiency

• Perform a feasibility study and cost-benefit analysis

• Consider environmental regulations and noise restrictions

• Ens
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Q3. IEC codes and standards?
Ans. 
IEC codes and standards are international standards for electrical engineering.
• IEC stands for International Electrotechnical Commission

• IEC codes and standards ensure safety, reliability, and compatibility of electrical systems and equipment

• Examples of IEC standards include IEC 60601 for medical electrical equipment and IEC 61850 for communication networks and systems in substations
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Q4. How do you do voltage drop?
Ans. 
Voltage drop is the reduction in voltage that occurs as electricity flows through a circuit due to resistance.
• Calculate the total resistance of the circuit

• Determine the current flowing through the circuit

• Multiply the current by the total resistance to get the voltage drop

• Use Ohm's Law (V=IR) to calculate voltage drop across individual components

• Consider using voltage drop calculators or tables for more complex circuits
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Q5. How to choose your cable ?
Ans. 
Choose cable based on voltage, current, temperature, environment and application.
• Determine voltage and current requirements

• Consider temperature range and environmental conditions

• Choose cable type based on application (e.g. power, data, signal)

• Select appropriate conductor material (e.g. copper, aluminum)

• Check for any regulatory requirements or standards (e.g. NEC, UL)

• Examples: THHN for indoor power, Cat6 for data transm
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Q6. Which relay is used in our panel ?
Ans. 
I'm sorry, I don't have the available data to answer this question.
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Q7. Do you know anything about starters where it used?
Ans. 
Starters are used to control the starting current of motors.
• Starters are used to limit the inrush current during motor starting.

• They protect the motor from damage due to high starting current.

• Types of starters include direct-on-line, star-delta, and soft starters.

• Starters are commonly used in industrial and commercial applications.

• Examples of applications include pumps, fans, and conveyor belts.
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Q8. What are all the breakers you know tell their uses and benefits?
Ans. 
Breakers are electrical switches that protect circuits from overloading and short circuits.
• Circuit Breaker - protects circuits from overloading and short circuits

• Ground Fault Circuit Interrupter (GFCI) - protects against electrical shock in wet areas

• Arc Fault Circuit Interrupter (AFCI) - protects against electrical fires caused by arcing

• Main Breaker - controls power to the entire electrical panel

• Miniature Circuit Break...read more
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Regarding RDSS Projects

Q1. Regarding BOQ of 11 KV & 33 KV Feeder Bifurcation
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Q2. Regarding Installation of DTR Structure with transformer
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Q3. Regarding 33/11 KV Augmented substation and installation of Power Transformer
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Q1. In Which field do you have knowledge of?
Ans. 
I have knowledge in the field of mechanical engineering.
• Mechanical engineering principles and concepts

• Design and analysis of mechanical systems

• Thermodynamics and fluid mechanics
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Q2. How much was your past salary in the company in which you were working
Ans. 
I am not comfortable disclosing my past salary from my previous company.
• It is not appropriate to discuss past salary during an interview

• Focus on the value I can bring to this new role

• Salary expectations should be based on the current market and the responsibilities of the new position
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Q1. How long did you work in your past company?
Ans. 
I worked at my past company for 3 years.
• Worked at past company for 3 years

• Started in entry-level position and was promoted twice

• Received Employee of the Year award in second year
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Q2. What salary do you expect in this company?
Ans. 
I expect a competitive salary that reflects my skills, experience, and the market rate for this position.
• Research the average salary range for Engineer 1 positions in the industry and location

• Consider your own qualifications, experience, and the value you bring to the company

• Be prepared to negotiate based on the company's offer and benefits package
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Q1. Concrete Quality
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Q2. Steel structure fabrication
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Q1. Salary discuss with last salary
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