1500+ Graduate Engineer Trainee (Get) Interview Questions and Answers

Technical interview questions on IC engines, machining operations, welding, casting, heat treatment, thermodynamics, materials, and mechanics.

• IC engine types include spark ignition (SI) and compression ignition (CI)

• Otto cycle is used in SI engines while Diesel cycle is used in CI engines

• Welding types include MIG, TIG, and stick welding

• Casting types include sand casting, investment casting, and die casting

• Heat treatment processes include annealing, quenching, and tempering

• Ther...read more

To check continuity of a wire inside a wall, use a multimeter and connect it to the starting and end points of the wire.

• Turn off power to the circuit before testing

• Set the multimeter to continuity mode

• Connect one probe to the starting point and the other to the end point

• If the multimeter beeps or shows a reading, the wire has continuity

• If there is no continuity, the wire may be broken or disconnected

The cost of painting the wall behind me cannot be determined without additional information.

• The cost of painting a wall depends on various factors such as the size of the wall, the type of paint used, and the labor charges.

• Additional information needed includes the dimensions of the wall, the type of paint desired, and the cost of labor per square foot or hour.

• Once these details are provided, an estimate can be calculated by multiplying the area of the wall by the cost per sq...read more

Large air voids in concrete can weaken its strength and durability.

• Air voids can reduce the density of concrete, making it more porous and susceptible to water penetration.

• This can lead to freeze-thaw damage, corrosion of reinforcement, and reduced durability.

• Air voids can also weaken the compressive strength of concrete, making it more prone to cracking and failure.

• Proper compaction and curing can help minimize the formation of air voids in concrete.

• Air-entraining agents can...read more

10 bags with 10 coins each, one bag has 0.9 gm coins. How to find it using weighing machine once?

• Number the bags from 1 to 10

• Take 1 coin from bag 1, 2 coins from bag 2, 3 coins from bag 3, and so on

• Weigh all the coins together

• Subtract the expected weight (550 gm) from the actual weight to get the bag number with 0.9 gm coins

M25 concrete is a mix of concrete with a compressive strength of 25 MPa.

• M25 concrete is commonly used in construction for foundations, columns, and beams.

• It is made by mixing cement, sand, and coarse aggregates in a ratio of 1:1:2.

• The water-cement ratio should be around 0.45 for M25 concrete.

• The compressive strength of M25 concrete is achieved after 28 days of curing.

• M25 concrete is suitable for moderate exposure conditions.

If the transit mixer is delayed in reaching the site before the i.s.t. of cement, I would take the following actions.

• Contact the transit mixer driver to inquire about the delay and estimated time of arrival.

• Inform the site supervisor and project manager about the delay.

• Evaluate the impact of the delay on the construction schedule and adjust accordingly.

• Consider alternative options such as sourcing cement from a nearby supplier or rescheduling the concrete pouring.

• Coordinate w...read more

After receiving the plan of a construction, the following steps should be followed.

• Review the plan thoroughly to understand the scope and requirements of the project.

• Identify any potential issues or conflicts in the plan and communicate them to the relevant stakeholders.

• Create a detailed project schedule and timeline based on the plan.

• Allocate resources and manpower according to the requirements of the plan.

• Obtain necessary permits and approvals for the construction.

• Procure m...read more

Answering questions related to transformers, MOSFETs, generators, and major projects.

• A transformer is an electrical device that transfers energy between two or more circuits through electromagnetic induction.

• MOSFET is a type of transistor used for amplification and switching of electronic signals. It is used in power supplies, motor control, and audio amplifiers.

• A generator converts mechanical energy into electrical energy, while a motor converts electrical energy into mechan...read more

Different types of pumps and their differences.

• Centrifugal pumps: used for low viscosity fluids, high flow rates, low pressure

• Positive displacement pumps: used for high viscosity fluids, low flow rates, high pressure

• Axial flow pumps: used for high flow rates, low pressure, low viscosity fluids

• Mixed flow pumps: used for medium flow rates and pressures

• Jet pumps: used for pumping fluids with high solids content

• Differences include design, flow rate, pressure, viscosity, and appli...read more

The general steps in constructing a building involve planning, designing, obtaining permits, site preparation, foundation, framing, electrical and plumbing, insulation, drywall, and finishing.

• Plan and design the building

• Obtain necessary permits and approvals

• Prepare the site for construction

• Lay the foundation

• Frame the building

• Install electrical and plumbing systems

• Insulate the building

• Install drywall and other finishes

• Complete final touches and inspections

Number of times hour and minute hand overlap in a 12-hour clock in 12 hours.

• The hands overlap every hour at 5 minutes past the hour.

• The hands overlap once more between 12:00 and 1:00.

• Total overlaps in 12 hours are 11.

25 KV AC is more efficient for railways due to lower transmission losses and higher power carrying capacity.

• 25 KV AC has lower transmission losses compared to 750V DC

• 25 KV AC can carry higher power compared to 750V DC

• 25 KV AC is more suitable for long distance and high-speed trains

• 750V DC is more suitable for urban and suburban railways

• Examples: Indian Railways uses 25 KV AC for long distance and high-speed trains, while Mumbai suburban railways use 750V DC

To join 2 C-Sections facing towards each other, align the two sections and use appropriate fasteners.

• Align the two C-Sections so that they are facing towards each other

• Ensure that the edges of the sections are properly aligned

• Use appropriate fasteners such as screws, bolts, or rivets to join the sections together

• Ensure that the fasteners are securely tightened to provide a strong connection

• Consider using additional reinforcement methods like welding or adhesive bonding for ad...read more

Authentication is verifying identity, authorization is granting access. Form validation ensures data is entered correctly.

• Authentication confirms the identity of a user, while authorization determines what actions they can perform.

• Authentication can be implemented through methods like passwords, biometrics, or two-factor authentication.

• Authorization can be implemented through role-based access control or attribute-based access control.

• Form validation can be applied using Java...read more

Program to find second largest number from set of array

• Sort the array in descending order

• Return the second element of the sorted array

Cut the cake twice horizontally and once vertically to make 8 pieces.

• Make two horizontal cuts to get three layers

• Make one vertical cut through the center

• Total 8 pieces will be obtained

The procedure for form work removal on site involves several steps to ensure safety and quality of the structure.

• Inspect the concrete for strength and stability

• Remove the formwork in a systematic manner to avoid damage to the concrete

• Ensure that the removal process does not cause any stress or strain on the structure

• Dispose of the formwork material properly

• Clean and prepare the area for the next phase of construction

Strength of concrete refers to its ability to resist external forces and maintain its shape and integrity.

• Strength of concrete is measured in terms of its compressive strength, which is the maximum amount of force it can withstand before it fails.

• The strength of concrete depends on the ratio of cement, water, and aggregates used in its mixture.

• Concrete gains strength over time as it cures and hardens, with most of the strength gained in the first 28 days.

• The strength of concr...read more

The slump value for pumpable concrete varies depending on the mix design and application.

• Slump value is the measure of the consistency of concrete.

• Pumpable concrete typically has a higher slump value than traditional concrete.

• The slump value for pumpable concrete can range from 150mm to 200mm.

• The mix design and application will determine the appropriate slump value for pumpable concrete.

The difference in heat conduction between a hot bar placed in still liquid and in moving liquid.

• In still liquid, heat conduction occurs primarily through conduction and natural convection.

• In moving liquid, heat conduction occurs through conduction, forced convection, and turbulence.

• Moving liquid enhances heat transfer due to increased fluid motion and mixing.

• The rate of heat conduction is generally higher in moving liquid compared to still liquid.

• Examples: Stirring a hot drin...read more

Wire drawing at room temperature is cold working for both steel and tin rods.

• Wire drawing involves pulling a metal rod through a die to reduce its diameter.

• Cold working is a process where the metal is deformed at room temperature.

• Hot working is a process where the metal is deformed at high temperatures.

• Steel and tin rods can be cold worked at room temperature through wire drawing.

• Hot working is typically done at high temperatures to reduce the force required for deformation.

A transformer diagram can be drawn from both primary and secondary ends.

• Draw two parallel lines representing the core of the transformer

• Draw two coils around the core, one for primary and one for secondary

• Connect the coils with a dotted line to represent the magnetic field

• Label the primary and secondary coils and indicate the direction of current flow

• Include any additional components such as taps or shields

Welding aluminium is difficult due to its high thermal conductivity, low melting point, and susceptibility to distortion and cracking.

• Aluminium has a high thermal conductivity, which means it dissipates heat quickly, making it difficult to maintain a consistent temperature during welding.

• Aluminium has a low melting point, which means it can easily become overheated and distorted during welding.

• Aluminium is susceptible to cracking due to its high shrinkage rate and low ductili...read more

Object-oriented programming is a programming paradigm that uses objects to represent and manipulate data. Procedural programming is a programming paradigm that uses procedures or functions to structure the program.

• Object-oriented programming focuses on objects and their interactions.

• Procedural programming focuses on procedures or functions.

• In object-oriented programming, data and behavior are encapsulated within objects.

• In procedural programming, data and behavior are separat...read more

Tests carried out on aggregates

• Sieve analysis to determine particle size distribution

• Water absorption test to measure the porosity of aggregates

• Aggregate crushing value test to measure the strength of aggregates

• Los Angeles abrasion test to measure the resistance to wear and tear

• Soundness test to measure the resistance to weathering

• Alkali-silica reaction test to determine the potential for harmful chemical reaction

• Organic impurities test to detect the presence of organic matte...read more

Questions related to pumps, flow meters, distillation column, and heat transfer modes.

• Pumps are devices used to move fluids by mechanical action.

• Flow meters are instruments used to measure the flow rate of fluids.

• The working of flow meters varies depending on the type of flow meter used.

• Increasing the reflux ratio in a distillation column increases the purity of the distillate.

• The modes of heat transfer are conduction, convection, and radiation.

SDLC is a process followed for software development. Waterfall model is a linear sequential approach to SDLC.

• SDLC stands for Software Development Life Cycle

• It is a process followed for software development from conception to deployment

• Waterfall model is a linear sequential approach to SDLC

• It consists of distinct phases such as planning, design, development, testing, and deployment

• Each phase must be completed before moving on to the next

• Agile model is an iterative approach to ...read more

Answers to questions asked in a Graduate Engineer Trainee interview

• OOPs concepts include encapsulation, inheritance, polymorphism, and abstraction

• Inheritance is a mechanism where a new class is derived from an existing class

• C++ is an object-oriented programming language while C is a procedural programming language

• Code to print sum of prime numbers between 1 to 100: [code snippet]

• Primary key is a unique identifier for a record in a table while foreign key is a field in a table...read more

Bernoulli's theorem explains the relationship between fluid speed and pressure.

• Bernoulli's theorem states that as the speed of a fluid increases, its pressure decreases.

• It is important in industries such as aviation, where it is used to design wings and airfoils.

• It is also used in the design of pipelines and pumps.

• Limitations include the assumption of incompressible and non-viscous fluids, and the neglect of friction and turbulence.

• Bernoulli's equation can be used to calculat...read more

The state when there is no effect of pressure in a pipeline is called atmospheric pressure.

• Atmospheric pressure is the pressure exerted by the weight of air in the atmosphere.

• When the pressure inside the pipeline is equal to the atmospheric pressure outside, there is no effect of pressure.

• This state is also known as zero gauge pressure or absolute pressure.

• It is important to maintain this state to prevent leaks or bursts in the pipeline.

Static loads do not change with time, while dynamic loads involve at least one changing parameter. Fatigue failure occurs when a body is subjected to continuous dynamic loading.

• Static loads have constant force magnitude, direction, and point of application

• Dynamic loads involve changes in at least one of the load parameters over time

• Fatigue failure occurs when a body is subjected to continuous dynamic loading, leading to failure after a certain number of cycles

• Example: Bending...read more

The capacity of the battery is calculated based on the energy requirements and the discharge rate. The rating of the motor is determined by the power requirements and efficiency.

• Battery capacity is calculated by dividing the energy requirements by the discharge rate.

• Motor rating is determined by dividing the power requirements by the efficiency.

• Consider factors like voltage, current, and duration of operation when calculating capacity and rating.

• Example: For a battery with en...read more

Answering questions on Industrial Engineering and layouts

• Yes, I have taken a course on Industrial Engineering

• Different layouts include process layout, product layout, and fixed position layout

• Just in time is a manufacturing philosophy where materials are delivered just in time for production

• It aims to reduce inventory costs and increase efficiency

• For example, Toyota uses just in time manufacturing to reduce waste and improve production speed

The flowsheet of a methanol plant involves several steps including synthesis gas production, purification, methanol synthesis, and distillation.

• The first step in the methanol plant flowsheet is the production of synthesis gas, which is a mixture of carbon monoxide and hydrogen.

• The synthesis gas is then purified to remove impurities such as sulfur compounds and carbon dioxide.

• Next, the purified synthesis gas is fed into a methanol synthesis reactor, where it reacts over a cata...read more

The flow rate can be determined by multiplying the cross-sectional area of the pipe by the velocity of the fluid.

• Flow rate = Cross-sectional area × Velocity

• Cross-sectional area can be calculated using the formula: Area = π × (diameter/2)^2

• Velocity can be measured using a flow meter or calculated using other parameters

• Example: If the pipe diameter is 0.5 meters and the fluid velocity is 2 meters per second, the flow rate would be 0.7854 cubic meters per second

To remove 50% water from a fully filled right cylinder with only the cylinder available.

• Measure the height of the cylinder

• Mark the halfway point on the cylinder

• Pour out the water until it reaches the halfway mark

Designing a hood for capturing gasses near the outlet of a rotary furnace where molten metal comes out.

• Understand the flow of gasses and their temperature

• Determine the size and shape of the hood based on the furnace outlet

• Consider the material of the hood and its ability to withstand high temperatures

• Ensure proper ventilation and exhaust system for the captured gasses

• Test the hood for efficiency and make necessary adjustments

Answers to questions related to electrical engineering concepts.

• A circuit is a closed loop through which electricity flows.

• PCB stands for Printed Circuit Board, used to connect and support electronic components.

• Frequency is the number of cycles per second in an alternating current.

• AC is alternating current that changes direction periodically, while DC is direct current that flows in one direction.

• Electricity is generated in our country through various sources such as coal, hy...read more

Yes, it is possible to implement stack using queues.

• Implement push operation by enqueueing elements to the queue.

• Implement pop operation by dequeuing all elements except the last one and enqueueing them again.

• The last element in the queue will be the top element of the stack.

• Example: Queue: 1 2 3 4 5, Stack: 5 4 3 2 1

To reverse a linked list, traverse the list and change the direction of pointers. To reverse a string, use built-in functions or loop through the string and swap characters.

• For reversing a linked list, use three pointers - prev, current, and next. Traverse the list and change the direction of pointers.

• For reversing a string, use built-in functions like reverse() or loop through the string and swap characters using two pointers - one at the beginning and one at the end.

• Example...read more

Tests used for checking the bearing capacity of soil include plate load test, standard penetration test, and cone penetration test.

• Plate load test: Measures the load-bearing capacity of soil by applying a load on a steel plate placed on the ground surface.

• Standard penetration test: Determines the resistance of soil to penetration by a standard sampler driven by a standard hammer.

• Cone penetration test: Measures the resistance of soil to penetration by a cone-shaped penetromete...read more

I have used M50 grade of concrete in a construction project.

• I have experience in working with high-grade concrete such as M50.

• I have knowledge of the properties and characteristics of different grades of concrete.

• I have worked on a construction project where M50 grade of concrete was used for the foundation.

• I understand the importance of using the right grade of concrete for different types of structures.