10+ Interview Questions and Answers

Transport protocol in CAN J1939 is used for transmitting large data packets over the network.

• Transport protocol breaks down large data packets into smaller segments for transmission.

• It uses a flow control mechanism to ensure all segments are received and reassembled in the correct order.

• Examples of transport protocols in J1939 include BAM (Broadcast Announce Message) and RTS/CTS (Request To Send/Clear To Send).

Read DTCs service in UDS is used to retrieve diagnostic trouble codes from a vehicle's electronic control unit.

• DTCs are codes that indicate a problem with a vehicle's systems or components

• The read DTCs service allows technicians to identify and diagnose issues with a vehicle

• The service is part of the Unified Diagnostic Services (UDS) protocol used in automotive diagnostics

• Examples of DTCs include P0300 (random/multiple cylinder misfire detected) and U0100 (lost communication ...read more

CAN bus off is a state where communication between nodes on a CAN bus is lost. It can be recovered by resetting the bus or fixing the underlying issue.

• CAN bus off occurs when a node on the bus detects an error and goes into a fault state.

• This can happen due to issues like a short circuit, open circuit, or excessive noise on the bus.

• To recover from CAN bus off, the bus needs to be reset or the underlying issue needs to be fixed.

• Resetting the bus involves sending a sequence of ...read more

Security Access Service in UDS is responsible for managing access control and authentication for various UDS services.

• Security Access Service provides secure authentication and authorization for UDS services.

• It manages access control policies and enforces them across UDS services.

• It supports various authentication mechanisms such as username/password, certificates, and tokens.

• Examples of UDS services that use Security Access Service include User Management Service and Device ...read more

Successfully completing a project involves thorough planning, effective communication, strong leadership, and attention to detail.

• Thoroughly plan the project scope, timeline, and resources needed

• Communicate effectively with team members, stakeholders, and clients

• Demonstrate strong leadership skills to motivate and guide the team

• Pay attention to detail to ensure quality and accuracy in project execution

Baud rate is the number of signal changes per second in a communication channel.

• Baud rate is measured in bits per second (bps).

• It determines the speed at which data is transmitted over a communication channel.

• Higher baud rates mean faster data transfer.

• Baud rate is often confused with bit rate, but they are not the same thing.

To answer the question, draw the front view, top view, and section view of a given model.

• Start by drawing the front view, showing the model's features from the front perspective.

• Next, draw the top view, displaying the model as seen from above.

• Finally, create a section view by cutting the model in half to reveal its internal structure.

• Use appropriate scales and dimensions to accurately represent the model in each view.

Power is transmitted from the engine to the wheels through the transmission system.

• The engine generates power through combustion of fuel and air mixture.

• The power is transferred to the transmission system, which includes components like gears, driveshafts, and differentials.

• The transmission system adjusts the speed and torque of the power before sending it to the wheels.

• The wheels then use this power to propel the vehicle forward or backward.

• Examples of transmission systems i...read more

ASTM standards were used in the project to ensure consistency, quality, and safety of materials and processes.

• ASTM standards are widely recognized and accepted in various industries for ensuring product quality and safety.

• Using ASTM standards helps in standardizing processes and materials, making it easier to compare and evaluate results.

• Compliance with ASTM standards can enhance credibility and trust among stakeholders, including customers and regulatory bodies.

• For example, ...read more

4 stroke engines have four distinct processes (intake, compression, power, exhaust) while 2 stroke engines have only two (compression, power/exhaust).

• 4 stroke engines have separate intake and exhaust strokes, while 2 stroke engines combine intake and exhaust in one stroke.

• 4 stroke engines are more fuel efficient and produce less pollution compared to 2 stroke engines.

• Examples of 4 stroke engines include most car engines, while examples of 2 stroke engines include some motorcy...read more

Differential is a mathematical concept used to measure the rate of change of a quantity with respect to another variable.

• Differential is used in calculus to find the slope of a curve at a specific point.

• It involves finding the derivative of a function.

• For example, the differential of y = x^2 is dy/dx = 2x.

Structured data is organized and easily searchable, while unstructured data lacks a predefined format. Supervised learning uses labeled data for training, while unsupervised learning finds patterns in unlabeled data.

• Structured data is organized in a predefined format, such as databases or spreadsheets.

• Unstructured data lacks a specific format and includes text, images, videos, etc.

• Supervised learning uses labeled data to train a model to predict outcomes, like classifying ema...read more

CNN stands for Convolutional Neural Network. RCNN is Region-based Convolutional Neural Network and RNN is Recurrent Neural Network.

• CNN is a type of neural network commonly used for image recognition and classification.

• RCNN is an improvement over CNN that focuses on regions of interest within an image.

• RNN is a type of neural network designed for sequence data, such as text or speech.

• The main difference between RCNN and RNN is the focus on regions of interest vs sequential data...read more

A constant velocity joint is a type of joint used in vehicles to allow the transmission of power at a constant speed while accommodating changes in angle.

• Allows power transmission at a constant speed

• Accommodates changes in angle

• Commonly used in front-wheel drive vehicles

• Helps maintain smooth driving experience

A universal joint is a mechanical device that allows for the transmission of rotary motion between two shafts that are not in a straight line.

• Consists of two yokes connected by a cross-shaped intermediate piece

• Used in vehicles to connect the transmission to the rear axle

• Allows for flexibility in the transmission of power

• Commonly found in drive shafts and steering systems

Yes, predictive analysis involves using statistical algorithms to predict future outcomes based on historical data.

• Predictive analysis uses historical data to make predictions about future outcomes.

• It involves the use of statistical algorithms and machine learning techniques.

• Examples include predicting customer churn, forecasting sales, and detecting fraud.

• It helps businesses make informed decisions and optimize processes.

Material stress strain diagram shows the relationship between stress and strain in a material.

• Shows how a material deforms under stress

• Helps in determining material properties like yield strength and modulus of elasticity

• Can be used to predict material behavior under different loading conditions