10+ Palsons Derma Interview Questions and Answers

De-rating factors and considerations for cable sizing calculations in electrical engineering.

• De-rating factors include ambient temperature, grouping, soil thermal resistivity, and cable installation method.

• Ambient temperature affects the cable's current carrying capacity.

• Grouping of cables can lead to increased heat generation and reduced current carrying capacity.

• Soil thermal resistivity affects the heat dissipation capability of buried cables.

• Cable installation methods such...read more

The formula for cross section of earthing conductor and depth of burying the strip or bare earthing conductor.

• The formula for cross section of earthing conductor is determined by the maximum fault current and the allowable touch voltage.

• The depth of burying the strip or bare earthing conductor depends on factors such as soil resistivity and the type of installation.

• The cross section of earthing conductor can be calculated using the formula: Cross Section = (Fault Current x Le...read more

Bending moment and shear force diagrams show internal forces in a frame.

• Bending moment diagram shows variation of bending moment along the length of the frame.

• Shear force diagram shows variation of shear force along the length of the frame.

• Both diagrams are essential for analyzing the structural behavior of the frame.

• Example: In a simply supported beam, bending moment is maximum at the supports and zero at the center.

The steel shed design process involves determining the structural requirements, selecting appropriate materials, creating detailed drawings, and ensuring compliance with building codes.

• Determine the structural requirements based on the intended use of the shed

• Select appropriate steel materials based on factors such as strength, durability, and cost

• Create detailed drawings including dimensions, connections, and load calculations

• Ensure compliance with local building codes and r...read more

Wind loads on steel structures are applied using relevant codes and standards, considering factors like building height, shape, and location.

• Determine the wind speed and direction based on the location of the structure.

• Calculate the wind pressure using the relevant code (e.g. ASCE 7 for US projects).

• Consider factors like building height, shape, and openings to determine the wind load.

• Apply the wind load on the steel structure using appropriate load combinations.

• Ensure the str...read more

Welded connections are commonly used in civil structural engineering to transfer forces between structural members.

• Welded connections involve joining two structural members by melting and fusing the materials together.

• The force transfer mechanism in welded connections is through the weld itself, which acts as a continuous and strong bond between the members.

• Welded connections are often used in steel structures, such as bridges and high-rise buildings.

• Other types of connection...read more

Rack loading conditions refer to the specific requirements and limitations for placing and securing equipment on racks.

• Rack loading conditions include weight limits, distribution, and stability requirements.

• Equipment must be properly secured to prevent movement or damage during operation or transportation.

• Examples of rack loading conditions include maximum weight capacity per shelf, evenly distributed loads, and securing equipment with straps or bolts.

Developing a strategy for single source suppliers involves risk assessment, relationship management, and contingency planning.

• Conduct a thorough risk assessment to identify potential vulnerabilities and develop mitigation strategies.

• Establish strong relationships with the supplier to ensure open communication and collaboration.

• Develop contingency plans in case of supplier failure or disruption.

• Consider diversifying your supplier base to reduce dependency on a single source.

• Ne...read more

Events in angular page cycle

• ngOnChanges - called when an input binding value changes

• ngOnInit - called once after the first ngOnChanges

• ngDoCheck - called during every change detection run

• ngAfterContentInit - called after content initialization

• ngAfterContentChecked - called after every check of component content

• ngAfterViewInit - called after component's view has been initialized

• ngAfterViewChecked - called after every check of component's view

• ngOnDestroy - called before the comp...read more

Costing of control valves involves considering factors like material, size, type, and additional features.

• Consider the material of the control valve (e.g. stainless steel, brass, PVC)

• Take into account the size of the control valve (e.g. 1/2 inch, 2 inch)

• Factor in the type of control valve (e.g. globe valve, ball valve)

• Include any additional features or accessories needed (e.g. positioner, actuator)