30+ Deloitte Interview Questions and Answers

Questions related to applications engineering including tolerance stack up, bearing preloading, material selection, force calculation, and costing.

• Tolerance stack up refers to the accumulation of variations in dimensions and tolerances of individual parts in an assembly.

• Bearing preloading is the application of a small amount of force to the bearing to remove any internal clearance and improve its stiffness.

• The choice between hole base and shaft base system depends on the appl...read more

2D refers to two-dimensional objects or images, while 3D refers to three-dimensional objects or images.

• 2D objects have length and width, while 3D objects have length, width, and depth

• 2D images are flat, while 3D images have depth and can be viewed from different angles

• 2D objects can be represented on a piece of paper or screen, while 3D objects require special software or equipment to view

• Examples of 2D objects include drawings, photographs, and paintings, while examples of 3...read more

Electrical equipment deals with electricity, while electronics equipment deals with electronic signals and circuits.

• Electrical equipment uses electricity as a power source, while electronics equipment uses electronic signals.

• Electrical equipment includes items like power cables, transformers, and circuit breakers, while electronics equipment includes items like computers, smartphones, and televisions.

• Electrical equipment typically operates at higher voltages and currents, whi...read more

The interview questions cover various topics related to conveyor systems, fasteners, hydraulic and pneumatic operations, valves, cylinder and power pack workings, rail and ball screw alignment, bearing types, projects, current job profile, and company documentation.

• Conveyor types include belt conveyors, roller conveyors, and chain conveyors

• Fasteners can be bolts, screws, nuts, rivets, etc.

• Hydraulic operations involve the use of fluids to generate power

• Pneumatic operations use...read more

The angle between three phase windings is 120 degrees.

• The angle between each phase in a three-phase system is 120 degrees.

• This is because 360 degrees divided by 3 phases equals 120 degrees.

• Understanding the phase angles is important for proper functioning of electrical systems.

Tolerance stack up is the accumulation of variations in dimensions and tolerances in a product design. IT grades are international standards for tolerances.

• Tolerance stack up occurs when the cumulative effect of individual part tolerances results in a deviation from the intended design.

• IT grades, such as IT01, IT0, IT1, etc., are used to specify the level of tolerance allowed for a particular dimension or feature.

• Understanding tolerance stack up is crucial in ensuring that pa...read more

The rating of electrical components is selected based on factors like voltage, current, power, and temperature.

• Consider the voltage and current requirements of the circuit

• Calculate the power rating based on the voltage and current

• Take into account the temperature conditions the component will operate in

• Refer to datasheets and specifications provided by manufacturers

• Ensure the selected rating meets safety standards and regulations

DOL starter directly connects the motor to the power supply, while star delta starter initially starts the motor in star configuration before switching to delta configuration.

• DOL starter provides full voltage to the motor from the start

• Star delta starter reduces the starting current by initially connecting the motor in star configuration

• DOL starter is simpler and cheaper compared to star delta starter

• Star delta starter is used for high power motors to reduce starting current ...read more

Project management is the process of planning, organizing, and overseeing the execution of a project from start to finish.

• It involves defining project goals and objectives

• Creating a project plan and timeline

• Assigning tasks and responsibilities to team members

• Monitoring progress and making adjustments as needed

• Ensuring that the project is completed on time, within budget, and meets the desired quality standards

• Examples include building construction, software development, event...read more

Anti-friction bearings are designed to reduce friction between moving parts, allowing for smooth and efficient operation.

• Anti-friction bearings use rolling elements (such as balls or rollers) to reduce friction between two surfaces in contact.

• They are commonly used in machinery and equipment to support rotating or linear motion.

• Examples include ball bearings, roller bearings, and needle bearings.

• These bearings are designed to minimize heat generation and wear, resulting in lo...read more

There are two main types of motors: AC motors and DC motors.

• AC motors: Induction motors, synchronous motors

• DC motors: Brushed DC motors, brushless DC motors

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

• Consists of two coils of wire, known as primary and secondary windings

• Works on the principle of electromagnetic induction

• Used to step up or step down voltage levels in electrical circuits

• Commonly used in power distribution systems

• Examples include power transformers, distribution transformers, and instrument transformers

I handle customers with patience, empathy, and effective communication.

• Listen actively to their concerns and needs

• Provide clear and concise information

• Offer solutions and alternatives

• Remain calm and professional, even in difficult situations

• Follow up to ensure satisfaction

One alternative for the project could be implementing a different technology or methodology.

• Consider using a different programming language or framework

• Explore incorporating machine learning or AI into the project

• Look into utilizing cloud services for scalability and efficiency

PU stands for polyurethane, a versatile polymer used in various applications. PTFE stands for polytetrafluoroethylene, a synthetic fluoropolymer known for its non-stick properties.

• PU is a type of polymer that can be rigid or flexible, commonly used in foam insulation, coatings, adhesives, and sealants.

• PTFE is a synthetic fluoropolymer with high heat resistance and low friction, often used in non-stick cookware, gaskets, and seals.

Torque is applied on bolts to ensure proper tightening and prevent loosening.

• Torque helps to create a clamping force between the bolt and the joint, ensuring a secure connection.

• Applying torque helps to distribute the load evenly across the joint, reducing the risk of failure.

• Proper torque application prevents the bolt from loosening due to vibrations or external forces.

• Torque is essential for maintaining the integrity and safety of assembled components.

• Examples: automotive a...read more

Biometric technology is used for identification and authentication based on unique biological traits.

• Used for security purposes to verify identity through fingerprints, facial recognition, iris scans, etc.

• Commonly used in access control systems, time and attendance tracking, and mobile devices.

• Helps prevent unauthorized access and fraud by ensuring only authorized individuals can access certain areas or information.

RFID can be accessed using RFID readers which communicate with RFID tags wirelessly.

• RFID can be accessed using RFID readers which emit radio waves to communicate with RFID tags.

• RFID tags contain a unique identifier that can be read by the RFID reader.

• RFID technology is commonly used for tracking inventory, access control, and payment systems.

Splines are mechanical components used to transfer torque between two rotating objects while allowing for slight misalignment or movement.

• Splines are used in mechanical engineering to transfer torque between shafts or other rotating components.

• There are different types of splines including involute, straight-sided, and serrated splines.

• Splines allow for slight misalignment or movement between the connected components while still transmitting torque effectively.

Sensors are devices that detect changes in the environment and convert them into electrical signals. They have various applications in industries, automotive, healthcare, etc.

• Types of sensors: temperature sensors, pressure sensors, proximity sensors, motion sensors, light sensors, etc.

• Applications: temperature sensors in HVAC systems, pressure sensors in automotive industry, proximity sensors in smartphones for touch detection, motion sensors in security systems, light sensor...read more

Materials such as copper, aluminum, or steel are commonly used on poles for conducting electricity.

• Copper is a highly conductive material often used for electrical wiring and transmission lines.

• Aluminum is also a popular choice for conducting electricity due to its lightweight and cost-effective nature.

• Steel is used for structural support in poles and can also conduct electricity when necessary.

A transform is a function that converts data from one form to another. Types include linear, nonlinear, affine, etc.

• Transforms are used in data processing to manipulate data into a different format or structure

• Types of transforms include linear transforms, which preserve lines and planes, and nonlinear transforms, which do not

• Affine transforms are a type of linear transform that includes translation, rotation, scaling, and shearing

• In image processing, transforms like Fourier ...read more

Conveyor types include belt, roller, chain, and screw conveyors, each suitable for different applications.

• Belt conveyors are commonly used for moving large volumes of materials over long distances.

• Roller conveyors are ideal for handling heavy loads and are commonly used in warehouses and distribution centers.

• Chain conveyors are suitable for moving products through inclines or declines.

• Screw conveyors are used for transporting bulk materials such as grains, powders, and chemic...read more

The type of current refers to the flow of electric charge in a circuit.

• There are two main types of current: direct current (DC) and alternating current (AC).

• DC flows in one direction continuously, while AC changes direction periodically.

• Examples of DC sources include batteries, while examples of AC sources include power outlets.

• The type of current used depends on the application and requirements of the circuit.

PIR sensor detects motion by measuring changes in infrared radiation levels.

• Passive Infrared (PIR) sensor detects motion by measuring infrared radiation emitted by objects in its field of view.

• When motion is detected, the sensor sends a signal to trigger an alarm or turn on lights.

• Commonly used in security systems, automatic lighting systems, and occupancy detection in buildings.

Automation is the use of technology to control and monitor processes without human intervention.

• Automation involves the use of machines, computers, and robots to perform tasks previously done by humans.

• It increases efficiency, accuracy, and productivity in various industries such as manufacturing, transportation, and healthcare.

• Examples include automated assembly lines in factories, self-driving cars, and automated medication dispensing systems in hospitals.

Motor selection for rotary table involves considering torque requirements, speed, size constraints, and control system compatibility.

• Consider torque requirements for the rotary table based on load and acceleration/deceleration needs

• Select a motor with appropriate speed capabilities to meet the desired rotation speed

• Ensure the motor size fits within the constraints of the rotary table design

• Check compatibility with the control system for seamless integration

• Examples: Servo mot...read more

Assembly is the process of joining individual components to create a larger product or system.

• Assembly involves putting together various parts or components to form a complete product.

• It requires following specific instructions or blueprints to ensure proper alignment and connection of the parts.

• Assembly can be done manually or using automated machinery.

• Examples of assembly include assembling a computer by connecting the motherboard, CPU, RAM, and other components, or assembl...read more

Torque unit is a measure of the rotational force applied to an object.

• Torque is the product of force and the distance from the point of rotation.

• It is measured in units such as Newton meters (Nm) or foot-pounds (ft-lb).

• Torque is commonly used in engineering and physics to describe rotational motion.

• For example, when tightening a bolt with a wrench, the torque applied determines the tightness of the bolt.

• Higher torque values indicate greater rotational force.

Design failure methods are techniques used to identify and prevent potential failures in engineering designs.

• Failure Mode and Effects Analysis (FMEA) - systematic approach to identifying and preventing potential failure modes

• Fault Tree Analysis (FTA) - graphical representation of potential failure modes and their causes

• Root Cause Analysis (RCA) - method for identifying the underlying cause of a failure

• Design of Experiments (DOE) - method for testing and optimizing design para...read more

A dol starter is a type of starter used to start and control the speed of induction motors.

• Consists of a direct online (DOL) starter, contactor, overload relay, and start and stop push buttons

• Used to reduce the starting current drawn by the motor

• Provides protection against overload and short circuit

• Commonly used in industrial applications

Accessing id parameter in URL involves parsing the URL and extracting the id value.

• Use the window.location object to access the URL of the current page.

• Parse the URL using methods like split() or URLSearchParams to extract the id parameter.

• Example: If the URL is 'http://example.com/page?id=123', you can access the id value by parsing the URL.

GD&T stands for Geometric Dimensioning and Tolerancing. It is a system for defining and communicating engineering tolerances.

• GD&T is used to specify the allowable variations in form, size, and orientation of part features.

• It helps ensure that parts fit together properly and function as intended.

• GD&T symbols include position, concentricity, perpendicularity, and more.

• It is commonly used in mechanical engineering design and manufacturing processes.

• GD&T can help reduce manufactu...read more

Types of manufacturing processes include casting, machining, forming, joining, and additive manufacturing.

• Casting: involves pouring molten material into a mold to create a desired shape (e.g. sand casting, die casting)

• Machining: involves removing material from a workpiece using cutting tools (e.g. milling, turning)

• Forming: involves shaping a material without removing any material (e.g. forging, stamping)

• Joining: involves combining two or more pieces of material (e.g. welding,...read more