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Imeg Engineering India Interview Questions and Answers

Updated 29 Nov 2024

Q1. What is dry bulb and wet bulb temperature ?

Ans.

Dry bulb temperature is the air temperature measured by a regular thermometer. Wet bulb temperature is the lowest temperature that can be reached by evaporating water into the air.

  • Dry bulb temperature is the temperature of the air as measured by a regular thermometer.

  • Wet bulb temperature is the lowest temperature that can be reached by evaporating water into the air.

  • Dry bulb temperature is commonly used to determine the comfort level in indoor environments.

  • Wet bulb temperatur...read more

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Q2. WHat is heat load calculations and its components?

Ans.

Heat load calculations involve determining the amount of heat that needs to be added or removed from a space to maintain a desired temperature.

  • Components include heat gain from occupants, equipment, lighting, and infiltration, as well as heat loss through walls, windows, and roofs.

  • Calculations are typically done using formulas based on the specific heat capacities and thermal properties of materials.

  • Example: In HVAC design, heat load calculations are used to size equipment li...read more

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Q3. Tell me about VCRS.

Ans.

VCRS stands for Variable Compression Ratio System.

  • VCRS is a technology used in internal combustion engines to vary the compression ratio.

  • It allows the engine to optimize performance and efficiency based on driving conditions.

  • By adjusting the compression ratio, VCRS can improve fuel economy and reduce emissions.

  • VCRS can be implemented using various mechanisms such as a movable piston crown or a variable connecting rod length.

  • For example, Nissan's VC-Turbo engine uses VCRS to v...read more

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Q4. What is basic refrigeration cycle?

Ans.

The basic refrigeration cycle is a thermodynamic cycle that involves the transfer of heat from a low temperature region to a high temperature region.

  • The refrigerant absorbs heat from the low temperature space (evaporation)

  • The refrigerant is compressed, raising its temperature and pressure

  • The refrigerant releases heat to the high temperature space (condensation)

  • The refrigerant expands, lowering its temperature and pressure to start the cycle again

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Q5. Why you want to join IMEG?

Ans.

IMEG's reputation for innovative projects and collaborative work environment aligns with my career goals and values.

  • IMEG's focus on sustainable engineering solutions resonates with my passion for environmental conservation.

  • I am impressed by IMEG's diverse portfolio of projects, ranging from healthcare facilities to educational institutions.

  • IMEG's commitment to professional development and mentorship programs is something I value in a potential employer.

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Q6. What is humidty, wbt, dbt?

Ans.

Humidity, WBT, and DBT are important parameters in the field of HVAC and air conditioning.

  • Humidity refers to the amount of water vapor present in the air.

  • WBT (Wet Bulb Temperature) is the temperature read by a thermometer covered in a water-soaked cloth over which air is passed.

  • DBT (Dry Bulb Temperature) is the temperature of air measured by a regular thermometer.

  • These parameters are crucial in determining the comfort level and efficiency of HVAC systems.

  • Example: A high humid...read more

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Q7. Haw do define heat load in a room

Ans.

Heat load in a room refers to the amount of heat that needs to be removed to maintain a comfortable temperature.

  • Heat load is influenced by factors such as the number of occupants, equipment, lighting, and insulation in the room.

  • Calculating heat load involves determining the heat gain from these factors and the heat loss through walls, windows, and ventilation.

  • Heat load is measured in British Thermal Units (BTUs) or Watts.

  • An example of heat load calculation is determining the ...read more

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Q8. Draw psychrometric chart.

Ans.

A psychrometric chart is a graphical representation of the thermodynamic properties of air.

  • A psychrometric chart shows the relationship between temperature, humidity, and other properties of air.

  • It is used in HVAC design to determine the appropriate air conditioning and ventilation systems.

  • The chart includes lines of constant temperature, humidity ratio, and enthalpy.

  • It also includes regions of comfort, such as the ASHRAE comfort zone.

  • The chart can be used to calculate proper...read more

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