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

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.

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

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

Calculate the quantity of cement required for 12 mm thickness cement plastering 1:6 on 100 sq.m new brick work.

• Calculate the volume of plaster required by multiplying the area and thickness of plastering.

• Convert the volume of plaster into the quantity of cement required by using the mix ratio.

• The mix ratio of 1:6 means one part of cement and six parts of sand.

• Assuming the density of cement as 1440 kg/cum, calculate the weight of cement required.

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

Searching a URL triggers a series of steps involving DNS resolution, server communication, and content rendering in the browser.

• 1. User enters a URL in the browser's address bar.

• 2. The browser checks its cache for the IP address associated with the URL.

• 3. If not found, the browser queries a DNS resolver to resolve the domain name.

• 4. The DNS resolver checks its cache; if not found, it queries root DNS servers.

• 5. The root server directs the resolver to the appropriate TLD (Top-...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

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

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

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

IGBT, MOSFET, and SCR are all types of power electronic devices used for switching and controlling electrical power.

• IGBT stands for Insulated Gate Bipolar Transistor and is commonly used in high power applications such as motor drives and inverters.

• MOSFET stands for Metal Oxide Semiconductor Field Effect Transistor and is commonly used in low power applications such as mobile devices and computers.

• SCR stands for Silicon Controlled Rectifier and is commonly used in AC power co...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

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

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.

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

Java code compiles into bytecode, which the JVM executes, enabling platform-independent execution.

• Java source code (.java) is written by the developer.

• The Java compiler (javac) converts .java files into bytecode (.class files).

• Bytecode is platform-independent and can run on any system with a JVM.

• The Java Virtual Machine (JVM) interprets or compiles bytecode into machine code for execution.

• JVM manages memory and provides a runtime environment for Java applications.

Video calling transmits audio and video data over the internet using the OSI model for communication.

• Application Layer: Video calling apps like Zoom or Skype provide user interfaces for communication.

• Presentation Layer: Data is encoded and compressed (e.g., H.264 for video, AAC for audio) for efficient transmission.

• Session Layer: Establishes, maintains, and terminates connections (e.g., signaling protocols like SIP).

• Transport Layer: Ensures reliable data transfer (e.g., TCP f...read more

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

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

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

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