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I applied via Approached by Company and was interviewed before Feb 2022. There were 3 interview rounds.
There are several types of heat exchangers including shell and tube, plate and frame, and air-cooled.
Shell and tube heat exchangers are the most common type and consist of a shell with tubes running through it.
Plate and frame heat exchangers use thin plates to transfer heat between fluids.
Air-cooled heat exchangers use air as the cooling medium instead of water or other liquids.
Other types include double pipe, spiral,
Distillation is a process of separating components of a mixture based on their boiling points.
The mixture is heated to vaporize the component with the lowest boiling point
The vapor is then condensed and collected as a separate liquid
This process is repeated for each component with a higher boiling point
Examples include the production of ethanol from fermented grains and the purification of water
Carnot's cycle is a theoretical thermodynamic cycle that describes the most efficient heat engine possible.
It consists of four reversible processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression.
It operates between two heat reservoirs at different temperatures.
The efficiency of the cycle is given by the ratio of the temperature difference between the two reservoirs to the ...
Refrigeration cycle is a process of removing heat from a space or substance and transferring it to another space or substance.
The cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.
The refrigerant is compressed by the compressor and then condensed in the condenser, releasing heat.
The high-pressure liquid refrigerant then passes through the expansion valve, where it expands an...
Distillation is a process of separating components of a mixture based on their boiling points. There are several types of distillation.
Simple distillation: used for separating components with a large difference in boiling points
Fractional distillation: used for separating components with closer boiling points
Steam distillation: used for separating heat-sensitive compounds
Vacuum distillation: used for separating compone...
Enthalpy is the heat content of a system while entropy is the measure of disorder or randomness in a system.
Enthalpy is a thermodynamic property that describes the amount of heat released or absorbed during a process.
Entropy is a measure of the degree of randomness or disorder in a system.
Enthalpy and entropy are related through the Gibbs free energy equation.
Enthalpy is usually denoted by the symbol H while entropy is...
Boiling point is the temperature at which a liquid turns into a gas.
Boiling point is a physical property of a substance.
It is the temperature at which the vapor pressure of the liquid equals the atmospheric pressure.
Water boils at 100°C or 212°F at standard atmospheric pressure.
Boiling point can be affected by pressure changes.
Substances with higher boiling points require more energy to boil than those with lower boili
Unit operation refers to a single step in a process, while unit process involves a series of steps to achieve a specific goal.
Unit operation is a single step in a process, such as filtration or distillation.
Unit process involves a series of unit operations to achieve a specific goal, such as producing a certain chemical compound.
Unit process is a more complex and comprehensive process than unit operation.
Unit operation...
Vapor pressure is the pressure exerted by the vapor of a substance in equilibrium with its liquid or solid phase.
Vapor pressure increases with temperature
Substances with high vapor pressure evaporate easily
Vapor pressure is used in distillation and evaporation processes
Vapor pressure can be measured using a variety of techniques
I applied via Campus Placement and was interviewed before May 2022. There were 3 interview rounds.
A multiplexer is a device that selects one of several input signals and forwards the selected input into a single line.
Multiplexers are used in digital circuits to reduce the number of input/output lines required to transmit data.
They are also used in communication systems to combine multiple signals into a single transmission line.
Multiplexers can be implemented using logic gates or integrated circuits.
Examples of mul...
Data type is a classification of data items based on the type of value they hold. C programming has various data types.
Data type determines the type of data that can be stored in a variable
C programming has basic data types like int, float, char, double, etc.
C programming also has derived data types like arrays, pointers, structures, unions, etc.
The name of AC to DC converter IC is dependent on the specific IC being used.
There are many different AC to DC converter ICs available on the market
Some popular AC to DC converter ICs include the LM7805, LM7812, and LM317
The specific IC chosen will depend on the requirements of the circuit being designed
An array in C is a collection of elements of the same data type stored in contiguous memory locations.
Arrays are declared using square brackets []
Elements in an array can be accessed using their index number
Arrays can be initialized during declaration or later using a loop
Example: int arr[5] = {1, 2, 3, 4, 5};
Example: for(int i=0; i<5; i++) { arr[i] = i+1; }
The OSI model has 7 layers that define how data is transmitted over a network.
The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer has a specific function and communicates with the layers above and below it.
For example, the Physical layer deals with the physical transmission of data, while the Application layer deals with user interfaces and application-level protoc...
Mental ability and Reasoning and english
I applied via Naukri.com and was interviewed in Feb 2022. There were 2 interview rounds.
Polmon Instruments interview questions for popular designations
I applied via Campus Placement and was interviewed before Mar 2021. There were 2 interview rounds.
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I applied via Approached by Company and was interviewed before May 2023. There was 1 interview round.
posted on 16 Jul 2020
I applied via Naukri.com and was interviewed before Jul 2019. There were 5 interview rounds.
I applied via Campus Placement and was interviewed in May 2024. There was 1 interview round.
I managed a high CGPA through consistent hard work, effective time management, seeking help when needed, and staying organized.
Consistent hard work by studying regularly and staying focused on academics
Effective time management to balance studies, assignments, and extracurricular activities
Seeking help from professors, tutors, or classmates when facing challenges
Staying organized with study schedules, notes, and deadli
posted on 1 Dec 2024
I applied via Referral and was interviewed before Dec 2023. There were 2 interview rounds.
Software development life cycle is a process used by software developers to design, develop, test, and deploy software applications.
SDLC consists of several phases such as planning, analysis, design, implementation, testing, and maintenance.
Each phase has its own set of activities and deliverables to ensure the successful completion of the project.
Examples of SDLC models include Waterfall, Agile, Scrum, and DevOps.
SDLC...
Two coding questions. One using quick sort. The other one was for prime numbers
posted on 14 Oct 2024
I applied via Campus Placement and was interviewed in Sep 2024. There were 2 interview rounds.
To reverse two numbers without using a temp variable, use bitwise XOR operation.
Use bitwise XOR operation to swap two numbers without using a temp variable.
Example: a = 5, b = 7. a = a XOR b, b = a XOR b, a = a XOR b. After this, a = 7, b = 5.
I want to join Thermo Fisher because of their reputation for innovation and impact in the scientific community.
Thermo Fisher is a leader in the scientific research and healthcare industry
I am impressed by their commitment to innovation and cutting-edge technology
I believe working at Thermo Fisher will provide me with opportunities for professional growth and development
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Visakhapatnam,
Hyderabad / Secunderabad
+10-2 Yrs
Not Disclosed
Hyderabad / Secunderabad
6-8 Yrs
Not Disclosed
Assistant Engineer
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