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Bus bar schemes are different ways of connecting bus bars in power systems.
Single bus bar scheme
Double bus bar scheme
Main and transfer bus bar scheme
Ring bus bar scheme
Breaker and a half scheme
Mesh bus bar scheme
The equipment sequence for any line bay starts with the circuit breaker and ends with the transformer.
The circuit breaker is the first equipment in the sequence.
Next comes the isolator switch.
After that, the earth switch is operated.
Then the line disconnector is opened.
Finally, the transformer is disconnected from the line.
The sequence is reversed when the line bay is put back into service.
I applied via Referral and was interviewed before Dec 2023. There were 2 interview rounds.
AECOM interview questions for popular designations
I appeared for an interview in Apr 2023.
Get interview-ready with Top AECOM Interview Questions
I applied via Campus Placement and was interviewed before Jul 2022. There were 2 interview rounds.
Very basic level aptitude test and civil engineering subjects test.
Bending moment diagram of a fixed beam subjected to udl throughout the whole length.
Calculate the reactions at the supports of the beam
Determine the equation for bending moment at any point along the beam
Plot the bending moment diagram with positive and negative values
The bending moment will be maximum at the supports and zero at the midpoint of the beam
Bending moment diagram of a 1-bay, 1-storey portal frame with point load at column middle.
Calculate reactions at supports
Determine internal forces at critical points
Plot bending moment diagram using equations or software
Identify maximum bending moment and its location
M stands for mix design in M-20 concrete, indicating the compressive strength of the concrete mix.
M-20 concrete is a mix design where 'M' represents the compressive strength of the concrete after 28 days of curing.
The number '20' in M-20 concrete indicates the characteristic compressive strength of concrete in N/mm^2.
Different grades of concrete have different compressive strength requirements, with M-20 being a common
IS 10262 is required for mix design in civil engineering.
IS 10262 is the code for concrete mix design in India.
It provides guidelines for proportioning of concrete ingredients based on strength and durability requirements.
The code covers various aspects such as water-cement ratio, workability, and compressive strength.
Mix design is crucial for ensuring the desired properties and performance of concrete.
Following the co...
Earthquake design of a multi storey building involves analyzing seismic forces, selecting appropriate structural systems, and implementing design measures to ensure safety.
Analyze seismic forces based on the building location and seismic zone
Select appropriate structural systems such as reinforced concrete or steel frames
Implement design measures like base isolation, dampers, and shear walls to enhance building's seism
Design process of one-way and two-way slabs and their differences
One-way slab design involves calculating bending moments and shear forces along one direction, typically supported on two opposite sides. Two-way slab design considers bending moments and shear forces in both directions, usually supported on all four sides.
One-way slab design is simpler and more common in practice, while two-way slab design is more comple...
Dynamic method considers time history of earthquake while equivalent static method simplifies earthquake forces into equivalent static forces.
Dynamic method analyzes building response to actual time history of earthquake ground motion.
Equivalent static method simplifies earthquake forces into equivalent static forces based on simplified assumptions.
Dynamic method is more accurate but computationally intensive, while eq...
I appeared for an interview in Jul 2022.
HVDC is a technology used to transmit high voltage DC power over long distances. Offshore connections refer to power transmission from offshore wind farms.
HVDC is more efficient than AC transmission over long distances
Offshore connections require specialized equipment and installation techniques
HVDC is used for offshore connections to transmit power from offshore wind farms to the mainland
Examples of HVDC projects incl...
I applied via Company Website and was interviewed before Feb 2023. There was 1 interview round.
I applied via Naukri.com and was interviewed in Nov 2022. There was 1 interview round.
Design standards for sewerage system
Design standards vary based on location and regulations
Consideration should be given to factors such as population density, topography, and soil type
Standards may include minimum pipe diameter, slope, and depth
Examples of design standards include ASCE 15 and EPA guidelines
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