1000+ Junior Engineer Interview Questions and Answers

Junior engineer in Electrical maintenance plays a crucial role in ensuring smooth functioning of electrical systems and providing necessary facilities to the company.

• Assist in the maintenance and repair of electrical systems and equipment

• Perform routine inspections to identify potential issues and ensure compliance with safety regulations

• Collaborate with senior engineers to develop and implement maintenance plans

• Provide technical support to other departments as needed

• Ensure a...read more

Questions on Buchholz relay, relay, sensor, electrical drawing, DOL starter, and reverse forward starter for Junior Engineer position.

• Buchholz relay is a protective device used in oil-filled transformers and reactors.

• A relay is an electrically operated switch that opens or closes circuits.

• A sensor is a device that detects and responds to some type of input from the physical environment.

• Electrical drawings are technical diagrams that show information about power, lighting, and...read more

Reactor pressure or synthesis pressure can be controlled by adjusting cooling or heating, or by releasing excess pressure.

• Adjust cooling or heating to maintain pressure

• Release excess pressure through safety valves

• Monitor pressure regularly to prevent overpressure

• Use pressure relief devices such as rupture discs or pressure relief valves

The thickness of mortar used in brickwork varies depending on the type of brickwork and the desired strength.

• The thickness of mortar in brickwork is typically between 10mm to 15mm.

• For load-bearing walls, the mortar thickness may be increased to 20mm.

• In some cases, thin-bed mortar systems are used, where the thickness can be as low as 3mm.

• The thickness of mortar can also vary based on the type of bricks used, such as clay bricks or concrete blocks.

A milling machine is a tool used to remove material from a workpiece by rotating a cutting tool.

• Specifications include the size of the table, spindle speed, and horsepower of the motor.

• Construction includes a base, column, knee, saddle, table, spindle, and overarm.

• Working process involves securing the workpiece to the table, selecting the appropriate cutting tool, and moving the table and spindle to remove material.

• Examples of milling machines include vertical, horizontal, an...read more

Inspections for wall plastering include surface preparation, thickness, curing time, and finish.

• Check if the surface is clean and free from dust and debris before applying plaster

• Ensure the thickness of the plaster is uniform throughout the wall

• Check the curing time of the plaster before applying paint or wallpaper

• Inspect the finish of the plaster for any cracks or unevenness

We receive raw materials from various suppliers and sell our products through our website and retail stores.

• Raw materials are sourced from trusted suppliers based on quality and cost-effectiveness.

• We maintain a good relationship with our suppliers to ensure timely delivery and availability of materials.

• Our products are sold through our website and retail stores located in major cities.

• We also have tie-ups with online marketplaces to reach a wider audience.

• Sales data is regula...read more

Nominal minimum covers for different structures are the minimum thickness of concrete or other materials required to protect the reinforcement from corrosion and provide durability.

• Nominal minimum cover is specified to prevent corrosion of reinforcement and ensure structural integrity.

• The minimum cover requirements vary depending on the type of structure and its exposure conditions.

• For reinforced concrete structures, the nominal minimum cover is typically specified in terms o...read more

To achieve zero safety issues, implement a comprehensive safety program, prioritize safety training, enforce safety protocols, conduct regular inspections, and encourage a safety culture.

• Implement a comprehensive safety program that includes policies, procedures, and guidelines.

• Prioritize safety training for all employees to ensure they are aware of potential hazards and know how to mitigate them.

• Enforce safety protocols strictly, including the use of personal protective equi...read more

Reinforcement checks for structural elements like column beam or slabs

• Check for proper placement and spacing of reinforcement bars

• Ensure the diameter and grade of reinforcement bars meet design specifications

• Check for proper cover of reinforcement bars

• Inspect for any damage or corrosion of reinforcement bars

• Verify that the reinforcement detailing matches the design drawings

There are various types of welding such as MIG, TIG, Stick, and Flux-Cored. MIG welding is a popular type of welding.

• MIG welding uses a wire electrode and a shielding gas to join two metal pieces together.

• TIG welding uses a tungsten electrode and a filler metal to create a weld.

• Stick welding uses a consumable electrode coated in flux to create a weld.

• Flux-Cored welding uses a wire electrode with a flux core to create a weld.

• MIG welding is commonly used in automotive and manuf...read more

Concrete is a composite material made of cement, aggregates, water, and admixtures. The code used for reinforced concrete is IS 456:2000.

• Concrete is a versatile construction material used for various applications.

• It is composed of cement, aggregates (such as sand and gravel), water, and admixtures.

• The cement acts as a binder that holds the aggregates together.

• Reinforced concrete (R.C.C) is a type of concrete that contains steel reinforcement bars (rebars) to enhance its stren...read more

Energy meter can be tested on line mode at site using a portable test equipment.

• Use a portable test equipment to simulate the load and measure the output of the energy meter.

• Ensure that the test equipment is calibrated and accurate.

• Perform the test during normal operating conditions to get accurate results.

• Compare the readings with the manufacturer's specifications to determine if the energy meter is functioning properly.

• Repeat the test at different loads to ensure the accura...read more

Questions related to torque, gearbox, torque limiter and coupling failure, yawing system bearing, and accumulator.

• Torque is a measure of rotational force.

• Gearbox works by transmitting power from the engine to the wheels.

• Torque limiter failure can be caused by overloading or overheating.

• Coupling failure can be caused by misalignment or excessive torque.

• Yawing system bearing is a type of roller bearing used to support the yawing mechanism.

• An accumulator is a device used to stor...read more

Yes, I have basic knowledge about working on site and executing site tasks.

• I have experience working on construction sites and have a good understanding of site operations.

• I am familiar with reading and interpreting construction drawings and plans.

• I have knowledge of various construction materials and their applications.

• I understand the importance of following safety protocols and regulations on site.

• I have worked with a team of engineers and contractors to ensure smooth exec...read more

Hydrogen is consumed in the reaction with chlorine gas to form hydrogen chloride.

• Hydrogen is removed from aluminium chloride by reacting it with chlorine gas.

• The reaction produces hydrogen chloride gas.

• Hydrogen chloride gas is a byproduct of the manufacturing process.

• Hydrogen chloride gas can be used in the production of PVC.

• The reaction is exothermic and releases heat.

Instrumentation refers to the use of instruments or devices to measure and control various physical variables.

• Instrumentation involves the use of sensors, transducers, and other devices to measure physical variables such as temperature, pressure, flow rate, and level.

• The data collected by instrumentation is used to monitor and control industrial processes, scientific experiments, and other systems.

• Examples of instrumentation include thermocouples, pressure gauges, flow meters...read more

Bricks need to dry before starting the brick work to ensure proper bonding and prevent shrinkage.

• Drying bricks removes excess moisture, allowing them to harden and strengthen.

• Wet bricks can cause shrinkage and cracking during the drying process.

• Dry bricks provide better adhesion with mortar, resulting in a stronger and more durable structure.

• Moisture in bricks can lead to efflorescence, a white powdery deposit on the surface.

• Drying bricks also helps to reduce the overall cons...read more

Questions related to civil engineering including pile forms, helicle making formula, lap and development length, slump and cube tests, joggles, and bend deductions for stirrup.

• DMC pile can be circular, square, or rectangular in shape

• Helicle making formula involves calculating the pitch, diameter, and number of blades for the helix

• Lap length is the length of overlap between two reinforcing bars in a concrete structure

• Development length is the length of bar required to transfer...read more

Unit weight of different diameters of steel bars

• Unit weight of steel = D^2/162.2 kg/m, where D is the diameter of the steel bar in mm

• Calculate unit weight for each diameter provided in the question

• 32mm dia steel: 32^2/162.2 = 6.31 kg/m

• 25mm dia steel: 25^2/162.2 = 3.85 kg/m

• 20mm dia steel: 20^2/162.2 = 2.47 kg/m

• 16mm dia steel: 16^2/162.2 = 1.57 kg/m

• 10mm dia steel: 10^2/162.2 = 0.62 kg/m

• 08mm dia steel: 08^2/162.2 = 0.39 kg/m

• 06mm dia steel: 06^2/162.2 = 0.22 kg/m

Current flows through the filament of the bulb, heating it up and causing it to emit light.

• Electric current flows through the filament of the bulb

• The filament heats up due to the resistance it offers to the flow of current

• The heat causes the filament to emit light

• Voltage determines the amount of current that flows through the bulb

Process safety in our organization involves identifying, evaluating, and controlling potential hazards to prevent accidents.

• We have a comprehensive hazard identification and risk assessment process

• We regularly conduct safety audits and inspections

• We provide training to employees on safe work practices

• We have emergency response plans in place

• Examples of process safety hazards include chemical spills, fires, and explosions

Different types of loads applied on long and short steel columns

• Long columns are more susceptible to buckling under compressive loads

• Short columns are more susceptible to crushing under compressive loads

• Long columns are more likely to experience bending under lateral loads

• Short columns are more likely to experience shear under lateral loads

• Examples of loads include dead load, live load, wind load, seismic load, etc.

Questions related to electrical engineering concepts such as transformers, AC and DC, motor, electromagnetic induction law, and Ohm's law.

• Transformers are devices that transfer electrical energy from one circuit to another through electromagnetic induction.

• AC (alternating current) changes direction periodically while DC (direct current) flows in one direction only.

• A motor is a device that converts electrical energy into mechanical energy.

• Electromagnetic induction law states t...read more

Safety measures to be followed while working at heights

• Use of proper personal protective equipment (PPE) like harness, helmet, etc.

• Proper training and certification of workers

• Regular inspection and maintenance of equipment and tools

• Proper communication and coordination among workers

• Adherence to safety guidelines and regulations

• Proper risk assessment and hazard identification

• Use of guardrails, safety nets, and other fall protection systems

• Proper supervision and monitoring of w...read more

Filling machines are used to fill containers with liquid or powder products. They consist of components like filling nozzles, pumps, and sensors.

• Filling machines are used in industries like food and beverage, pharmaceuticals, and cosmetics.

• Components of filling machines include filling nozzles, pumps, valves, and containers.

• Sensors used in filling machines include level sensors, flow sensors, and pressure sensors.

• Level sensors are used to detect the level of liquid in the con...read more

L4 level rework is a term used in engineering to describe a specific type of rework process.

• L4 level rework refers to the highest level of rework in a hierarchical system.

• It involves complex and advanced modifications or repairs to a product or system.

• L4 level rework requires a deep understanding of the engineering principles and expertise in the specific domain.

• Examples of L4 level rework can include redesigning a circuit board layout, modifying software code at a low-level,...read more

The process for tool maintenance and documentation involves regular inspections, scheduled maintenance, and detailed record-keeping.

• Perform regular inspections of tools to identify any issues or signs of wear and tear.

• Schedule routine maintenance tasks such as cleaning, lubrication, and calibration.

• Keep detailed records of all maintenance activities, including dates, tasks performed, and any repairs or replacements.

• Document any issues or malfunctions encountered during tool u...read more

The model of hydraulic cylinder in press filter depends on the specific press filter being used.

• The model of hydraulic cylinder can vary depending on the size and capacity of the press filter.

• Some common models of hydraulic cylinders used in press filters include tie rod cylinders and welded cylinders.

• The specific model of hydraulic cylinder used in a press filter can be determined by consulting the manufacturer's specifications or consulting with a hydraulic systems expert.

Answers to questions related to concrete engineering

• Characteristic compressive strength of concrete is the strength of concrete at 28 days of curing

• To design concrete mix of grade M30, use a mix proportion of 1:1.5:3 of cement, sand, and aggregate respectively

• Overlap in column reinforcement is provided at least 50 times the diameter of the bar to ensure continuity of reinforcement

• TBM stands for Tunnel Boring Machine, used for excavating tunnels in rock or soil

A smartphone is a type of feature phone with advanced features like internet connectivity, touch screen, and apps.

• Feature phones are basic mobile phones with limited functionality

• Smartphones have advanced features like internet connectivity, touch screen, and apps

• Smartphones are more expensive than feature phones

• Examples of feature phones include Nokia 3310 and Nokia 105

• Examples of smartphones include iPhone, Samsung Galaxy, and Google Pixel

FMEA is a risk assessment tool used to identify and mitigate potential failures. 5S is a workplace organization method. CP and CPS are statistical process control measures.

• FMEA stands for Failure Mode and Effects Analysis. It is a systematic approach to identifying and mitigating potential failures in a process or product.

• 5S is a workplace organization method that involves sorting, simplifying, sweeping, standardizing, and sustaining. It is used to improve efficiency and redu...read more

Testing of energy meters, CTs and PTs involves verifying their accuracy and functionality.

• Energy meters are tested to ensure they measure energy consumption accurately.

• CTs (Current Transformers) are tested to verify their current ratio and accuracy.

• PTs (Potential Transformers) are tested to verify their voltage ratio and accuracy.

• Testing may involve simulating different load conditions and measuring the output.

• Calibration of energy meters, CTs, and PTs is essential for accura...read more

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.

• Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.

• They consist of two coils of wire, called the primary and secondary coils, wrapped around a magnetic core.

• When an AC voltage is applied to the primary coil, it creates a magnetic field that induces a voltage in the secondary coil.

• The transformer...read more

HCl is used in our organization for various purposes including laboratory testing, cleaning, and pH adjustment.

• HCl is commonly used in laboratory testing to analyze and identify different substances.

• It is used for cleaning and removing mineral deposits from equipment and surfaces.

• HCl is also used for pH adjustment in various processes and reactions.

• In some cases, it is used as a reagent in chemical reactions to facilitate specific transformations.

• For example, HCl can be used ...read more

Types of steel and the steel process

• Types of steel include carbon steel, stainless steel, and alloy steel

• Steel process involves steps like melting, refining, casting, rolling, and heat treatment

• Examples of steel processes are Bessemer process, open hearth process, and electric arc furnace process

RoHS stands for Restriction of Hazardous Substances and refers to a directive that restricts the use of certain hazardous materials in electrical and electronic equipment.

• RoHS-compliant products do not contain substances like lead, mercury, cadmium, and certain flame retardants.

• Non-RoHS products may still contain these hazardous substances.

• Soldering acceptance criteria for class321 PCB board may vary depending on the specific standards and requirements set by the industry or ...read more

Designing a box culvert involves several steps including site investigation, hydraulic analysis, structural design, and construction planning.

• Conduct a site investigation to determine the soil conditions and water table level

• Perform hydraulic analysis to determine the flow rate and water level

• Select appropriate materials and dimensions for the culvert based on hydraulic and structural requirements

• Design the structural components of the culvert including footings, walls, and r...read more

A clutch works by engaging and disengaging the engine from the transmission to allow for gear changes.

• The clutch pedal is pressed to disengage the clutch

• Friction between the clutch plate and flywheel engages the clutch

• The clutch allows for smooth gear changes without stalling the engine

• Clutches can wear out over time and need to be replaced

The final finishing of a tyre involves several processes to enhance its appearance and performance.

• The final finishing of a tyre includes processes like buffing, painting, and branding.

• Buffing is done to remove any imperfections on the surface of the tyre.

• Painting is done to give the tyre its final color and appearance.

• Branding involves adding the manufacturer's logo, name, and other relevant information on the tyre.

• The final finishing also includes quality checks to ensure t...read more

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

• It is the most commonly used temperature measurement in HVAC systems.

• It is also known as air temperature.

• It does not take into account the moisture content of the air.

• It is measured using a thermometer placed in a shaded area.

• It is used to calculate the relative humidity of the air.

The thickness of BT and BC laying varies depending on the specific project requirements and specifications.

• The thickness of BT (Bituminous Concrete) and BC (Bituminous Macadam) laying can range from 25mm to 100mm.

• The thickness is determined based on factors such as traffic volume, soil conditions, and intended use of the pavement.

• For example, a highway pavement may require a thicker BT and BC laying compared to a residential driveway.

We use two types of steam in our organization: saturated and superheated steam.

• Saturated steam is commonly used for heating and sterilization processes.

• Superheated steam is used for power generation and industrial processes.

• The type of steam used depends on the specific application and equipment being used.

• For example, in a steam turbine, superheated steam is used to generate electricity.

• In a sterilization process, saturated steam is used to kill bacteria and other microorgan...read more

Yes, I have experience managing large teams and can handle manpower up to 100 or more.

• I have successfully managed a team of 150 employees in my previous role

• I am skilled in delegating tasks, setting goals, and ensuring productivity

• I have experience in conducting performance reviews and providing feedback to team members

I would redistribute the workload among the remaining team members and prioritize tasks based on urgency.

• Assess the workload and urgency of tasks to determine what can be delayed and what needs immediate attention.

• Redistribute tasks among the remaining team members based on their skills and availability.

• Communicate with the ill team members to see if there are any specific instructions or information that need to be passed on.

• Consider bringing in temporary help or outsourcing...read more

Development length is the length of steel reinforcement required to transfer the stress from steel to concrete.

• It is the length of steel bar that is embedded in concrete to transfer the stress from steel to concrete

• It is calculated based on the diameter of the steel bar, the strength of the concrete, and the bond strength between steel and concrete

• It is important to ensure that the development length is sufficient to prevent failure of the structure

• Example: For a 20mm diamete...read more

My favorite subject in my education time was Mathematics.

• I enjoyed solving complex mathematical problems.

• I found joy in discovering patterns and relationships in numbers.

• I appreciated the logical and analytical thinking required in mathematics.

• Mathematics helped me develop problem-solving skills that are valuable in engineering.

• I excelled in mathematics and consistently achieved high grades in the subject.