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Tunnel lining is the process of constructing a protective layer inside a tunnel to provide stability and prevent water ingress.
Tunnel lining can be done using various methods such as shotcrete, precast concrete segments, and cast-in-place concrete.
Shotcrete involves spraying a mixture of cement, sand, and water onto the tunnel walls using a high-pressure hose.
Precast concrete segments are manufactured off-site and then...
Gantry lining is a construction technique used to reinforce and stabilize tunnels or underground structures.
Gantry lining involves the installation of precast concrete segments or steel plates along the tunnel walls.
These segments or plates are carefully positioned and secured to form a continuous lining.
The lining provides structural support, prevents soil or water ingress, and enhances the overall stability of the tu...
Vibrators are used in gantries for compacting concrete and ensuring its strength and durability.
Vibrators are used to remove air bubbles and excess water from freshly poured concrete.
They help in achieving proper compaction and density of the concrete.
Vibrators are commonly used in the construction of bridges, dams, and other large structures.
They can be handheld or attached to the gantry for larger-scale operations.
Ex...
The density of concrete is a measure of its mass per unit volume.
Density of concrete typically ranges from 2200 to 2500 kg/m³.
The density can vary depending on the composition and aggregates used.
Lightweight concrete has lower density, around 1600 to 2000 kg/m³.
High-density concrete, used for radiation shielding, can have density up to 6000 kg/m³.
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My favorite subject is mathematics because I enjoy solving complex problems and using logic to find solutions.
I love working with numbers and equations
I find joy in solving challenging math problems
I appreciate the logical reasoning involved in mathematics
posted on 10 Sep 2017
I appeared for an interview before Sep 2016.
posted on 10 Sep 2015
I applied via PLACEMENT
posted on 12 May 2018
posted on 1 Jun 2021
I applied via Walk-in and was interviewed in Feb 2021. There were 3 interview rounds.
I applied via Approached by Company and was interviewed before Oct 2022. There were 3 interview rounds.
Wood governing refers to the regulations and standards that govern the use of wood in construction and engineering projects.
Wood governing includes codes, standards, and regulations related to the design, construction, and maintenance of wooden structures.
Knowledge of wood governing is important for ensuring compliance with safety and quality standards in engineering projects.
Examples of wood governing organizations in...
Maintaining furnace draft involves controlling air flow to ensure proper combustion and heat transfer.
Regularly clean and inspect the furnace and chimney to prevent blockages
Adjust the damper to control the amount of air entering the furnace
Use a draft gauge to monitor and adjust draft pressure
Install a barometric damper to automatically regulate draft pressure
Consider installing a draft inducer to improve draft in low
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 Company Website and was interviewed before Jan 2022. There were 3 interview rounds.
posted on 31 Jan 2022
I applied via Naukri.com and was interviewed in Sep 2021. There were 4 interview rounds.
Technical and Aptitude Questions
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