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I applied via Naukri.com and was interviewed in Aug 2023. There were 2 interview rounds.
AC works by transferring heat from inside a building to outside, using a refrigeration cycle.
AC units contain a refrigerant that absorbs heat from indoor air and releases it outside.
The refrigerant evaporates at low pressure and temperature, absorbing heat in the process.
The refrigerant is then compressed, raising its temperature and pressure, before releasing the heat outside.
The cycle continues to maintain a comforta...
The gases in an AC unit typically include refrigerant gases such as R-410A or R-22.
Refrigerant gases are used in AC units to absorb and release heat in order to cool the air.
Common refrigerant gases used in AC units include R-410A (Puron) and R-22 (Freon).
These gases circulate through the AC system in a continuous cycle to facilitate the cooling process.
The indoor unit and outdoor unit coils are typically made of metals such as copper, aluminum, or a combination of both.
Common metals used in coils are copper and aluminum
Some coils may be made of a combination of copper and aluminum for better heat transfer
Other metals like steel may also be used in some cases
The copper pipe between indoor and outdoor units is covered by foam and white roll for insulation and protection against external elements.
The foam provides insulation to prevent heat loss or gain during the refrigerant transfer process
The white roll acts as a protective layer to shield the copper pipe from external damage such as UV rays, moisture, and physical impact
The insulation and protection help maintain the eff
Using two adjustable spanners to tighten a flare nut in a union can lead to it loosening due to uneven pressure distribution.
Using two adjustable spanners can result in uneven pressure being applied to the flare nut
This can cause the flare nut to become loose over time
It is recommended to use a proper flare nut wrench for tightening flare nuts in unions
The AC may be cut off due to various reasons such as power outage, malfunctioning components, or scheduled maintenance.
Power outage: AC will be cut off if there is a power outage in the building.
Malfunctioning components: If any part of the AC system malfunctions, it may be cut off to prevent further damage.
Scheduled maintenance: AC may be cut off temporarily for routine maintenance to ensure optimal performance.
The tools used in One AC installation include screwdrivers, pliers, wire strippers, and a multimeter.
Screwdrivers are used to tighten or loosen screws during installation.
Pliers are used for gripping and bending wires or components.
Wire strippers are used to remove insulation from wires.
A multimeter is used to measure voltage, current, and resistance in the AC system.
Types of AC include window AC, split AC, central AC, portable AC, and ductless mini-split AC.
Window AC: typically installed in a window and cools a single room
Split AC: consists of two units - one indoor and one outdoor - connected by refrigerant lines
Central AC: cools the entire house through a system of ducts
Portable AC: can be moved from room to room and does not require installation
Ductless Mini-Split AC: similar t
Vaccuuming the AC indoor helps remove dust, dirt, and debris that can accumulate and block airflow, leading to inefficient cooling and potential damage to the system.
Vaccuuming helps improve the efficiency of the AC system by ensuring proper airflow.
It helps prevent blockages caused by dust and debris, which can lead to overheating and system malfunctions.
Regular vaccuuming can prolong the lifespan of the AC unit and r...
Coils are often used in gas leaks to detect the presence of gas due to their sensitivity to changes in electrical resistance.
Coils are commonly used in gas leak detectors because they can detect changes in electrical resistance caused by the presence of gas
The coil is typically part of a sensor that is designed to trigger an alarm or signal when a gas leak is detected
The coil may be connected to a circuit that measures...
Time study is a method used to determine the time required to perform a specific task or activity.
Time study involves observing and timing each step of a process to calculate the total time needed.
It helps in identifying inefficiencies, improving productivity, and setting realistic production goals.
Time study can be conducted using various techniques such as direct observation, work sampling, or predetermined motion ti...
My KPI as an Assembly Engineer is to ensure efficient assembly processes, high-quality output, and meeting production targets.
Ensuring efficient assembly processes by optimizing workflow and minimizing downtime
Maintaining high-quality output by implementing quality control measures and conducting regular inspections
Meeting production targets by monitoring productivity, identifying bottlenecks, and implementing improvem...
Different types of filters are used in air systems to remove contaminants and improve air quality.
There are various types of filters such as HEPA filters, activated carbon filters, and electrostatic filters.
HEPA filters are highly efficient at removing particles as small as 0.3 microns.
Activated carbon filters are effective at removing odors and gases.
Electrostatic filters use an electric charge to attract and trap par...
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I applied via Approached by Company
I applied via Naukri.com and was interviewed before Jan 2021. There were 3 interview rounds.
Basic test
Technical interview-1
Technical interview -2
I applied via Recruitment Consulltant and was interviewed before Aug 2021. There were 3 interview rounds.
I applied via Approached by Company and was interviewed before May 2021. There were 2 interview rounds.
Topic given you need to stand out
Case study given regarding marketing opportunity
I applied via Campus Placement and was interviewed in May 2023. There were 4 interview rounds.
MCQ questions of C language
I applied via Referral and was interviewed in Nov 2024. There were 3 interview rounds.
There were 4 sections and first one was quant, second one was logical, third was English and finally 3 coding questions in last section
4 codes and 5 technical questions
Multi threading is the ability of a CPU to execute multiple threads concurrently.
Allows for parallel execution of tasks, improving performance
Each thread has its own stack and runs independently
Threads can communicate and synchronize using shared memory
Examples: running multiple tasks simultaneously in a web server, processing data in parallel
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
It enables a single interface to be used for different data types.
Examples include method overloading and method overriding in object-oriented programming.
Inner join returns only the rows that have matching values in both tables, while outer join returns all rows from both tables.
Inner join: returns rows with matching values in both tables
Outer join: returns all rows from both tables, with NULL values where there is no match
Example: Inner join - SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id
Example: Outer join - SELECT * FROM table1 LEFT OUTER JOIN table
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