Total Environment Building Systems Mechanical Engineer Interview Questions and Answers

Q1. Basic fundamentals of plumbing and fire fighting system.
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Q2. Fire pump room single line diagram and working.
Ans. 
A fire pump room single line diagram illustrates the components and flow of water in fire protection systems.
• Includes main components: fire pump, controller, water supply, and discharge piping.

• Fire pump types: centrifugal, positive displacement, each suited for different applications.

• Controller manages pump operation, ensuring automatic activation during fire alarms.

• Water supply sources: municipal water, tanks, or rese...read more
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Q3. Fire pump technical data sheet detail.
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Plumbing and fire fighting NBC code Standard etc.

Q1. Salary discussion.
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Q2. Why to join our organisation.
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I am excited to join your organization for its innovative projects, collaborative culture, and commitment to professional growth.
• Innovative Projects: Your organization is known for cutting-edge technology, such as the recent AI-driven solutions that enhance user experience.

• Collaborative Culture: I appreciate the emphasis on teamwork, as seen in your recent cross-departmental project that improved product delivery times...read more
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Q1. Rate Analysis , Reconciliation of materials
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Q2. Coefficient of cement
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The coefficient of cement is a measure of its ability to expand or contract due to changes in temperature or moisture.
• The coefficient of cement is also known as the coefficient of thermal expansion.

• It is an important factor to consider in construction projects to prevent cracking or damage to structures.

• The coefficient of cement varies depending on the type and composition of the cement.

• For example, Portland cement typ...read more
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Q3. Escalation of materials
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Escalation of materials refers to the process of increasing the priority or urgency of obtaining necessary materials for a project.
• Escalation may occur when there are delays in the delivery of materials or when the demand for materials exceeds the supply.

• Project managers may escalate materials by contacting suppliers to expedite delivery or by seeking alternative sources for the materials.

• Escalation can impact project ...read more
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Q1. What is your current job role & responsibility?
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Q2. How to manage site as a project engineer.
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A project engineer manages a site by overseeing construction activities, coordinating with stakeholders, ensuring compliance with regulations, and resolving issues.
• Coordinate with project managers, contractors, and subcontractors to ensure smooth workflow.

• Monitor progress and quality of construction activities to meet project deadlines.

• Ensure compliance with safety regulations and quality standards.

• Resolve any issues o...read more
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Q3. How much number of slab to give in one months.
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The number of slabs to give in one month depends on the project timeline, size of slabs, and resources available.
• Consider the project timeline and deadlines for completion

• Evaluate the size and complexity of the slabs to determine production rate

• Assess the availability of resources such as manpower and equipment

• Example: If the project requires 100 slabs and the production rate is 10 slabs per week, then it would take 10...read more
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Q4. What is the mivan shuttering.
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Mivan shuttering is a type of formwork that is used in construction for constructing walls and slabs.
• Mivan shuttering is a fast-paced construction technique.

• It involves setting up aluminum formwork to create the structure of walls and slabs.

• The formwork is reusable and can be quickly assembled and dismantled.

• Mivan shuttering results in smooth finishes on concrete surfaces.

• It is commonly used in high-rise buildings and
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Q5. Types of cement grade and which grade used in M70.
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Different types of cement grades include OPC, PPC, PSC, etc. M70 grade typically uses OPC cement.
• Types of cement grades: OPC, PPC, PSC, etc.

• M70 grade usually uses OPC cement.

• OPC (Ordinary Portland Cement) is commonly used in high-strength concrete mixes like M70.
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Q6. How much experience you have in high rise building.
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Q1. What is your current salary?
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I am currently earning a competitive salary based on my experience and qualifications.
• My current salary is in line with industry standards.

• I am open to discussing salary expectations for this role.

• I believe my compensation reflects my skills and contributions to my current employer.
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Q2. How much deduction in PF.
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The deduction in PF varies based on the employee's salary and the company's policy.
• PF deduction is typically a percentage of the employee's basic salary

• The current rate of PF deduction is 12% of the basic salary

• Some companies may choose to match the employee's contribution to PF

• Employees can also choose to contribute more than the mandatory 12%
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Q3. Your expectation salary breakup.
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Q4. Provide last 3 months salary slips and other documents.
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Q1. What is Youngs Modulus
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Young's Modulus is a measure of the stiffness of a material and its ability to withstand deformation under stress.
• Young's Modulus is also known as the modulus of elasticity.

• It is defined as the ratio of stress to strain in a material under tension or compression.

• Materials with high Young's Modulus values are stiffer and more resistant to deformation.

• For example, steel has a high Young's Modulus value compared to rubber
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Q2. How to find bearing capacity of sandy soil
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To find bearing capacity of sandy soil, conduct standard penetration test, determine soil type, calculate bearing capacity using appropriate formula.
• Conduct standard penetration test (SPT) to determine soil properties

• Identify soil type (sandy soil)

• Calculate bearing capacity using appropriate formula (e.g. Terzaghi's bearing capacity equation)

• Consider factors such as soil cohesion, angle of internal friction, and depth
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Q1. Questions are related to the operation of the substation equipment like VCB transformer panels etc
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Q1. 220 kv switchyard, switchgear equipments
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Q1. Total Work experience Previous company Role and responsibility Current CTC
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Q1. Technical skill DG sefty Transformer Sefty working principles All types breakers sefty SLD from HT line to LT line
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Q1. Chiller efficiency
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Chiller efficiency is a measure of how well a chiller unit is able to cool a space while using the least amount of energy.
• Chiller efficiency is typically measured by the Coefficient of Performance (COP), which is the ratio of cooling output to energy input.

• Regular maintenance and cleaning of chiller components can improve efficiency.

• Upgrading to a more energy-efficient chiller model can also increase efficiency.

• Proper ...read more
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Q2. Which one more efficiently? Air cooled,or water cooled???
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Water cooled systems are generally more efficient than air cooled systems due to higher heat transfer capabilities.
• Water has higher heat transfer capabilities compared to air

• Water cooled systems can maintain more consistent temperatures

• Water cooled systems are typically used in high performance applications such as data centers and industrial machinery
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Q3. How we improved duct velocity?
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Duct velocity can be improved by increasing the fan speed or reducing the duct size.
• Increase the fan speed to increase the air velocity in the duct.

• Reduce the duct size to increase the air velocity.

• Use dampers or adjustable louvers to control and optimize the airflow.

• Ensure proper sealing of duct joints to minimize air leakage.

• Consider using smooth and straight ducts to reduce friction and improve airflow.

• Regularly cle...read more
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Q4. What types of gas use chiller system?
Ans. 
The chiller system uses various types of gases for cooling purposes.
• Common types of gases used in chiller systems include R-134a, R-410A, and ammonia.

• R-134a is a hydrofluorocarbon (HFC) refrigerant commonly used in air conditioning systems.

• R-410A is a blend of hydrofluorocarbons used as a replacement for older refrigerants.

• Ammonia (NH3) is often used in industrial chiller systems due to its high cooling capacity.

• Other ...read more
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Q5. How we decided the vrf system capacity as per area??
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The VRF system capacity is determined based on the area's cooling and heating load requirements.
• Calculate the total cooling load and heating load for the area

• Consider factors such as insulation, windows, occupancy, and equipment

• Select VRF system capacity based on the calculated load requirements

• Consult with HVAC professionals for accurate sizing
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