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I applied via Approached by Company and was interviewed in Feb 2018. There were 5 interview rounds.
A VFD is a Variable Frequency Drive used to control the speed of an electric motor. VRF and VAV systems are different types of HVAC systems. NFPA 20 is the code used for fire pumps. Freeboard is the distance between the liquid level and the top of a tank.
VFD stands for Variable Frequency Drive.
It is used to control the speed of an electric motor by varying the frequency and voltage supplied to the motor.
VFDs are common...
There are three types of families in Revit: system families, loadable families, and in-place families.
System families are predefined families that are included with Revit, such as walls, floors, and roofs.
Loadable families are families that are created by users or downloaded from external sources and can be loaded into a project.
In-place families are families that are created directly within a project and are specific ...
I applied via Naukri.com and was interviewed in Aug 2022. There were 2 interview rounds.
There are several types of diffusers used in mechanical systems.
The most common types of diffusers are radial, axial, and mixed flow.
Radial diffusers are used in centrifugal compressors and have a circular cross-section.
Axial diffusers are used in axial compressors and have a rectangular cross-section.
Mixed flow diffusers are used in mixed flow compressors and have a combination of circular and rectangular cross-sectio...
The distance between sewer line manholes varies depending on the location and terrain.
The distance between manholes can range from 50 to 400 feet.
In urban areas, manholes are usually closer together due to the higher concentration of sewage.
In hilly areas, manholes are placed closer together to account for changes in elevation.
The distance between manholes can also be affected by the size of the pipe and the flow rate ...
Some of the top questions asked at the Blue Star Draughtsman Mechanical interview -
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