10+ Assistant Manager Mechanical Interview Questions and Answers

The thumb rule to calculate water consumption in a cooling tower is 3 GPM per every 100 tons of cooling.

• Water consumption in cooling tower is calculated based on the cooling load

• The thumb rule is 3 GPM per every 100 tons of cooling

• Factors like temperature, humidity, and air flow rate affect water consumption

• Water treatment and maintenance can also impact water consumption

Parameters considered while calculating heat load in a room

• Size of the room

• Number of occupants

• Type and number of electrical appliances

• Number and size of windows

• Insulation of walls and ceiling

• Orientation of the room

• Climate of the region

Directions affect the amount of heat transferred and the efficiency of the system.

• Heat transfer is affected by the direction of the flow of fluids or gases.

• The orientation of the surface being heated or cooled affects the amount of heat transferred.

• The direction of the sun's rays can affect the heat load on a building.

• The direction of wind flow affects the heat load on a building.

• Considering directions helps in designing an efficient heating or cooling system.

The recommended ACPH for a kitchen depends on the size and type of kitchen.

• The recommended ACPH for a commercial kitchen is 15-20 ACPH (air changes per hour).

• The size and type of kitchen, as well as the type of cooking equipment used, can affect the recommended ACPH.

• The ACPH can be calculated by dividing the volume of the kitchen by the airflow rate.

• Proper ventilation and exhaust systems should be in place to maintain the recommended ACPH.

• Regular maintenance and cleaning of t...read more

ACPH stands for Air Changes Per Hour.

• ACPH is a measurement used to determine the rate at which the air in a space is replaced with fresh air.

• It is commonly used in HVAC systems to ensure proper ventilation and air quality.

• ACPH is calculated by dividing the volume of air in a space by the flow rate of fresh air into that space.

• For example, if a room has a volume of 1000 cubic feet and fresh air is supplied at a rate of 100 cubic feet per hour, the ACPH would be 10.

• Higher ACPH ...read more

Welding electrode coding is used to identify the type of electrode and its characteristics.

• The first two digits of the electrode coding indicate the minimum tensile strength of the weld metal in thousands of pounds per square inch (psi).

• The third digit indicates the welding position(s) for which the electrode is suitable.

• The fourth digit indicates the type of coating and the type of welding current (AC, DC, or both) that can be used with the electrode.

• The last two digits indi...read more

Auditing requirements refer to the standards and procedures that must be followed during an audit.

• Auditing requirements ensure that audits are conducted in a consistent and thorough manner.

• They include guidelines for planning, conducting, and reporting on audits.

• Auditing requirements may be set by regulatory bodies, industry standards, or internal policies.

• Examples of auditing requirements include the International Standards on Auditing (ISA) and the Generally Accepted Auditi...read more

I use multiple layers in AutoCAD to organize and manage different elements of the design.

• I use layers to separate different components of the design such as dimensions, text, and different views.

• Each layer can have its own properties like color, line type, and line weight.

• Layers help in controlling the visibility and editing of specific parts of the drawing.

• For example, I may have a layer for dimensions, another for annotations, and another for the main drawing elements.

Specialization in power project refers to focusing on a specific area or aspect of power projects, such as design, construction, operation, or maintenance.

• Specialization in power project involves acquiring in-depth knowledge and expertise in a specific area of power projects.

• It allows professionals to specialize in areas like power plant design, equipment selection, project management, or renewable energy technologies.

• Specialization can also include focusing on specific types...read more

VAV stands for Variable Air Volume. It is an HVAC system that controls the airflow to different zones based on their heating and cooling needs.

• VAV uses a series of dampers to regulate the amount of air flowing into a space.

• It measures the temperature of the air in each zone and adjusts the airflow accordingly.

• VAV systems are energy-efficient as they only supply the amount of air required to maintain the desired temperature.

• VAV systems are commonly used in commercial buildings...read more