800+ Graduate Engineer Trainee (Get) Interview Questions and Answers for Freshers

Dual cycle principles involve both constant volume and pressure processes in an engine cycle.

• Dual cycle is a combination of Otto and Diesel cycles.

• It involves two constant volume and one constant pressure processes.

• The first constant volume process is isentropic compression.

• The constant pressure process is combustion.

• The second constant volume process is isentropic expansion.

• It is used in gas turbine engines and some internal combustion engines.

Answers to questions related to induction machine and power transmission

• Induction machine works on the principle of electromagnetic induction

• Flux is induced in the rotor of the induction machine due to the rotating magnetic field produced by the stator

• Infinite bus is a hypothetical bus with infinite power capacity and voltage

• If load is suddenly changed in infinite bus, the voltage and frequency will change

• High voltage is considered in transmission to reduce power losses due t...read more

The workability of concrete on site can be measured using various methods.

• Slump test: Measures the consistency and flowability of concrete.

• Compaction factor test: Determines the workability by measuring the degree of compaction achieved.

• Flow table test: Measures the flowability of concrete by determining the diameter of the spread.

• Vebe test: Measures the time taken for a standard vibrating needle to penetrate the concrete.

• Kelly ball test: Measures the workability by determini...read more

Common tests performed on concrete and cement

• Compressive strength test

• Water absorption test

• Setting time test

• Soundness test

• Fineness test

• Chemical analysis test

Refrigeration cycles are thermodynamic cycles used in refrigeration systems to transfer heat from a low-temperature region to a high-temperature region.

• Refrigeration cycles involve four main components: compressor, condenser, expansion valve, and evaporator.

• The cycle starts with the compressor, which increases the pressure and temperature of the refrigerant gas.

• The high-pressure gas then flows into the condenser, where it releases heat to the surroundings and condenses into a...read more

OOP Concept is a programming paradigm that uses objects to represent real-world entities. Inheritance is a mechanism where a class inherits properties and behaviors from another class.

• OOP Concept is based on the principles of encapsulation, inheritance, and polymorphism.

• It allows for modular and reusable code by organizing data and functions into objects.

• Inheritance is a key feature of OOP that allows a class to inherit properties and methods from another class.

• The class that...read more

Interference is the addition of unwanted signals, while distortion is the alteration of the original signal.

• Interference is caused by external signals or noise that disrupt the desired signal.

• Distortion occurs when the original signal is altered or modified.

• Methods to eliminate interference include shielding, filtering, and using balanced connections.

• Distortion can be reduced by using high-quality components, equalization, and feedback techniques.

Counters are used to count the number of clock pulses and generate output signals. Shift registers are used to store and shift data.

• Counters are sequential circuits that count the number of clock pulses and generate output signals.

• They can be used in applications such as frequency dividers, event counters, and timers.

• Shift registers are used to store and shift data in a serial manner.

• They can be used in applications such as data storage, data transfer, and parallel-to-serial ...read more

The WHERE clause is used to filter data in a SQL query.

• It is used to specify a condition to filter the rows returned in a SELECT statement.

• It can be used with various operators such as =, <, >, LIKE, etc.

• It can also be used with logical operators such as AND, OR, NOT.

• Example: SELECT * FROM customers WHERE age > 18 AND city = 'New York';

Standard size of brick is 19x9x9 cm, modular size is 20x10x10 cm. Various transportation types, wall height, IS code book usage, AutoCAD shortcut key, and railway/highway transportation discussed.

• Standard size of brick: 19x9x9 cm

• Modular size of brick: 20x10x10 cm

• Types of transportation: railway, highways

• Wall height: not specified

• IS code book usage for concrete and steel: Yes

• AutoCAD shortcut key: not specified

There are two main types of compressors: positive displacement and dynamic.

• Positive displacement compressors work by trapping a fixed amount of air and forcing it into a smaller space, while dynamic compressors use high-speed rotating impellers to accelerate and compress air.

• Examples of positive displacement compressors include reciprocating, rotary screw, and rotary vane compressors, while examples of dynamic compressors include centrifugal and axial compressors.

• The choice o...read more

Plinth level is the base level of a building's foundation, usually above ground level.

• Plinth level is the starting point of construction.

• It is the base level of a building's foundation.

• It is usually above ground level.

• It is important to ensure that the plinth level is constructed accurately to avoid any structural issues.

• The plinth level is usually marked by a horizontal line on the building's foundation.

• The plinth level can vary depending on the location and purpose of the b...read more

Materials like Gypsum and Diamond are used as reference in Mohr's scale because they have well-defined hardness values.

• Mohr's scale is a qualitative scale that ranks minerals based on their relative hardness.

• Gypsum is assigned a hardness value of 2 on the scale, while diamond is assigned a hardness value of 10.

• Using materials like Gypsum and Diamond as reference points allows for easy comparison and classification of other minerals.

• These materials have well-defined hardness v...read more

I am interested in Honda's innovative technology and commitment to sustainability, which aligns with my personal values.

• I am impressed by Honda's focus on research and development, which has resulted in cutting-edge technology like the Honda Sensing safety suite.

• Honda's commitment to sustainability is also important to me, as I believe in working for a better future for our planet.

• I am excited about the opportunity to work for a company that values innovation and sustainabili...read more

To design a conveyor belt, follow these steps

• Determine the required specifications such as length, width, and load capacity

• Select the appropriate materials for the belt and frame

• Design the belt path and determine the necessary components such as rollers and motors

• Create a detailed drawing and 3D model of the conveyor

• Test the conveyor to ensure it meets the required specifications

CGD stands for City Gas Distribution. It is the process of distributing natural gas to households and industries in a city.

• CGD involves laying pipelines to transport natural gas

• It includes setting up of CNG stations for vehicles

• CGD companies are responsible for maintenance and safety of pipelines

• Examples of CGD companies in India are Indraprastha Gas Limited and Mahanagar Gas Limited

Distillation is a process of separating components of a mixture based on their boiling points.

• Distillation column is a tall vertical vessel used for distillation

• The mixture is heated in a reboiler at the bottom of the column

• Vapors rise up the column and are condensed on trays or packing material

• The condensed liquid flows down the column and is reheated in the reboiler

• The process is repeated until the desired level of separation is achieved

Yes, we can write int func() and int func(int a) in a single class.

• We can overload the function with different parameters.

• The function with no parameter is called default constructor.

• Example: class MyClass { int func(); int func(int a); };

• Both functions can have different implementations.

1 way slab is supported on two opposite sides while 2 way slab is supported on all four sides. Cannot determine slab type without more information.

• 1 way slab is economical for smaller spans and lighter loads

• 2 way slab is suitable for larger spans and heavier loads

• Slab type depends on the room dimensions and load requirements

Slump is measured by placing a slump cone on a flat surface and filling it with concrete. The cone is then lifted and the slump is measured.

• Place a slump cone on a flat surface

• Fill the cone with concrete in three layers

• Compact each layer with a steel rod

• Remove the excess concrete from the top of the cone

• Lift the cone vertically and measure the slump

• Repeat the process for consistency

The larger radius of wheels at the back of tractors provides better traction and stability.

• Larger wheels at the back increase the tractors' pulling power and ability to carry heavy loads.

• The larger surface area of the wheels distributes the weight more evenly, reducing soil compaction.

• The increased radius helps in overcoming obstacles and rough terrains.

• The larger wheels also improve the tractors' stability and prevent tipping over.

• Examples: Tractors used in agriculture, cons...read more

Heat exchanger is a device used to transfer heat between two or more fluids of different temperatures.

• Types of heat exchangers include shell and tube, plate and frame, and finned tube.

• The type of fluid being used determines the material of construction for the heat exchanger.

• Baffles are plates or rods placed inside the heat exchanger to direct the flow of fluid and increase heat transfer efficiency.

W/c ratio is the ratio of water to cement in concrete. Admixtures like superplasticizer can improve concrete without changing w/c ratio.

• W/c ratio is a crucial factor in determining the strength and durability of concrete.

• It is the ratio of the weight of water to the weight of cement used in the mix.

• A lower w/c ratio means stronger and more durable concrete.

• Admixtures like superplasticizer can improve workability, reduce water content, and increase strength without changing w/...read more

Stress and strain are measures of the internal forces within a material. Stress is the force applied per unit area, while strain is the deformation of the material.

• Stress is the force applied per unit area on a material, measured in units like Pascals or pounds per square inch.

• Strain is the deformation or change in shape of a material due to stress, measured as a ratio of the change in length to the original length.

• Stress and strain are related by the material's modulus of el...read more

Measuring instruments are devices used to measure physical quantities. They work based on specific principles and have various applications.

• Electrical measuring instruments measure electrical quantities like voltage, current, resistance, etc.

• Examples of electrical measuring instruments include voltmeters, ammeters, ohmmeters, etc.

• They work based on principles like electromagnetic induction, thermal expansion, etc.

• Instrumentation measuring instruments measure physical quantiti...read more

It depends on your career goals and personal preferences.

• EPGP is more suitable for experienced professionals looking for executive roles.

• PGPM is ideal for fresh graduates or early-career professionals seeking general management roles.

• Consider the curriculum, faculty, alumni network, and placement opportunities before deciding.

• Research the institute's reputation and industry connections to make an informed choice.

• Ultimately, choose the program that aligns with your career aspi...read more

The more efficient option is X due to its faster processing speed and lower energy consumption.

• Option X is more efficient because it has a higher processing speed.

• Option X consumes less energy compared to option Y.

• Option X provides better performance and productivity.

• Option Y may have certain advantages, but overall, option X is more efficient.

Chuting is a good method for concrete pouring in certain situations, but it depends on the project requirements.

• Chuting is useful for pouring concrete in hard-to-reach areas or when using a pump is not feasible.

• It can also be a cost-effective option for smaller projects.

• However, it may not be the best choice for larger projects or when a high level of precision is required.

• The decision to use chuting should be based on the specific needs of the project and the expertise of th...read more

Diesel cycle is a constant pressure cycle while Otto cycle is a constant volume cycle.

• Diesel cycle uses compression ignition while Otto cycle uses spark ignition.

• Diesel cycle has a higher compression ratio than Otto cycle.

• Diesel cycle is used in diesel engines while Otto cycle is used in gasoline engines.

• Diesel cycle has a higher thermal efficiency than Otto cycle.

• Diesel cycle has a longer combustion duration than Otto cycle.

Young's modulus is a measure of stiffness of a material while ultimate tensile strength is the maximum stress a material can withstand.

• Young's modulus is the ratio of stress to strain in a material under tension or compression.

• Ultimate tensile strength is the maximum stress a material can withstand before breaking.

• Young's modulus is measured in pascals (Pa) while ultimate tensile strength is measured in newtons per square meter (N/m²).

1 Tr of refrigeration is the amount of heat required to melt 1 ton of ice in 24 hours.

• 1 Tr of refrigeration is equal to 12,000 BTU/hr or 3.517 kilowatts.

• Newtonian fluids have constant viscosity, while non-Newtonian fluids have variable viscosity.

• Psychometric chart is a graphical representation of the thermodynamic properties of air-water mixtures.

• Entropy is a measure of the disorder or randomness in a system, while enthalpy is the total heat content of a system.

• Second law of ...read more

Frontend is the part of a website or application that users interact with. Node.js is a JavaScript runtime environment.

• Frontend refers to the user interface and user experience of a website or application.

• It includes the design, layout, and functionality of the website or application.

• Node.js is a JavaScript runtime environment that allows developers to run JavaScript on the server-side.

• It is commonly used for building scalable and high-performance web applications.

• Node.js can...read more

Electrorefining, electrowinning, and electroplating are all electrochemical processes used for different purposes.

• Electrorefining is used to purify metals through electrolysis, such as copper refining.

• Electrowinning is used to extract metals from their ores through electrolysis, such as zinc production.

• Electroplating is used to coat a metal object with a thin layer of another metal, such as gold plating on jewelry.

• All three processes involve the use of an electric current to ...read more

Factors affecting heat flow in liquids

• Temperature difference between the liquid and its surroundings

• Thermal conductivity of the liquid

• Surface area and thickness of the container

• Agitation or stirring of the liquid

• Presence of impurities or dissolved substances in the liquid

• Viscosity of the liquid

• Type of liquid (e.g., water, oil, alcohol)

• Convection currents within the liquid

Our company produces a range of products including electronics, home appliances, and personal care items.

• Electronics: We manufacture smartphones, laptops, and gaming consoles.

• Home appliances: Our range includes refrigerators, washing machines, and air conditioners.

• Personal care: We produce hair dryers, electric shavers, and toothbrushes.

Various types of sensors used in industries include temperature sensors, pressure sensors, level sensors, etc.

• Temperature sensors: thermocouples, resistance temperature detectors (RTDs), thermistors

• Pressure sensors: piezoresistive sensors, capacitive sensors, strain gauge sensors

• Level sensors: ultrasonic sensors, capacitive sensors, float sensors

• Flow sensors: electromagnetic flow meters, ultrasonic flow meters, thermal mass flow meters

• Proximity sensors: inductive sensors, cap...read more

To increase NPSHr when NPSHa is more, reduce the impeller diameter or increase the speed of the pump.

• Reduce impeller diameter

• Increase pump speed

Draw the work breakdown structure for a ROOM with foundation

• Foundation: excavation, concrete pouring, reinforcement

• Walls: framing, insulation, drywall

• Roof: framing, sheathing, shingles

• Flooring: subfloor, flooring material

• Electrical: wiring, outlets, switches

• Plumbing: pipes, fixtures

• Finishing: painting, trim, hardware

Boilers are vessels that heat water or other fluids to generate steam or hot water for various applications.

• Fire-tube boilers: hot gases pass through tubes immersed in water

• Water-tube boilers: water flows through tubes and hot gases surround them

• Electric boilers: use electricity to generate heat instead of burning fuel

• Condensing boilers: extract additional heat from the exhaust gases to increase efficiency

• Package boilers: pre-designed and assembled in a factory for easy insta...read more

The thickness of plaster for inner and outer walls depends on various factors such as the type of wall, location, and purpose.

• The thickness of plaster for inner walls is usually 12-15 mm.

• The thickness of plaster for outer walls is usually 20-25 mm.

• The thickness of plaster can vary depending on the type of wall, such as brick, concrete, or block.

• The location of the wall, such as whether it is an interior or exterior wall, can also affect the thickness of plaster.

• The purpose of...read more

Increasing reflux ratio reduces condenser duty.

• Higher reflux ratio means more liquid is returned to the column.

• This increases the liquid flow rate in the column.

• As a result, less vapor needs to be condensed in the condenser.

• Reduced condenser duty leads to lower energy consumption.

• Example: If the reflux ratio is doubled, the condenser duty may be halved.

The task is to capitalize the first and last character of each word in a given string.

• Split the string into an array of words

• Iterate through each word and capitalize the first and last character

• Join the modified words back into a string

Reinforcement is provided in the form of steel bars or mesh in concrete structures for shear and bending.

• Steel bars or mesh are embedded in concrete beams and slabs to provide reinforcement for bending.

• Stirrups are used to provide reinforcement for shear in beams.

• Shear reinforcement in slabs can be provided by using steel mesh or by adding steel bars in the form of a grid.

• The amount and placement of reinforcement is determined by structural engineers based on the design requi...read more

Neutral is grounded in star connected transformer for safety and to limit voltage rise.

• Grounding neutral limits voltage rise in case of unbalanced loads.

• It provides a path for fault current to flow, which helps in detecting and isolating faults.

• It reduces the risk of electric shock to personnel and damage to equipment.

• In some countries, it is a legal requirement to ground the neutral in electrical systems.

• Example: In a 3-phase, 4-wire system, the neutral is grounded to limit ...read more

Centrifugal pump is a mechanical device used to transport fluids by converting rotational kinetic energy to hydrodynamic energy.

• Centrifugal pump consists of an impeller, casing, and inlet/outlet ports.

• The impeller rotates and creates a centrifugal force that moves the fluid towards the outlet.

• NSPH stands for Net Positive Suction Head and is a measure of the pressure required at the inlet to prevent cavitation.

• Cavitation occurs when the pressure at the inlet drops below the va...read more

Viscosity Index of lube measures its resistance to change in viscosity with temperature.

• Viscosity Index (VI) is an important property of lubricating oils.

• It measures the oil's ability to maintain its viscosity under different temperature conditions.

• Higher VI means the oil's viscosity changes less with temperature, indicating better performance.

• VI is calculated using kinematic viscosity measurements at two different temperatures.

• For example, a high VI oil like Mobil 1 Syntheti...read more

The type of foundation depends on the building's weight, soil type, and depth of bedrock.

• For heavy buildings, deep foundations like piles or caissons are preferred.

• For lighter buildings, shallow foundations like spread footings or slab-on-grade are preferred.

• Soil type also plays a role in determining the type of foundation.

• For example, expansive soils require special foundations like drilled piers or grade beams.

• The depth of bedrock also affects the type of foundation, as it ...read more