Wabtec Junior Engineer Electrical Interview Questions and Answers

Q1. What is your expectations
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Q2. As per industry norms
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Q1. Introduction Questions related to c programming like structures, data types, size of structure. Inputs and deliverables of V model. Technical questions related to testing like statement coverage, branch an...read more
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Q1. Salary discussions and joining date
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Q1. UDS protocols and NRCs, DCM configuration
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Q1. Why Continental
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Q1. Find lowest and highest number in an array. Optimize the code
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Find lowest and highest number in an array efficiently
• Use a loop to iterate through the array and keep track of the lowest and highest numbers

• Initialize variables for lowest and highest numbers with the first element of the array

• Compare each element with the current lowest and highest numbers and update accordingly
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Q1. Tell me about yourself?
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I am a motivated and enthusiastic individual with a strong passion for learning and gaining practical experience in the field of [field].
• I am currently pursuing a degree in [field] at [university].

• I have completed internships at [company] and [company], where I gained valuable skills in [specific skills].

• I am proficient in [relevant software/tools] and have a strong ability to adapt and learn new technologies quickly.

• I...read more
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Q2. What is OSI model?
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The OSI model is a conceptual framework that standardizes the functions of a communication system into seven layers.
• The OSI model stands for Open Systems Interconnection model.

• It was developed by the International Organization for Standardization (ISO) in 1984.

• The model divides the communication process into seven layers, each with its own specific functions and protocols.

• The layers are: Physical, Data Link, Network, T...read more
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Q3. What is AM and FM?
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AM and FM are two types of modulation techniques used in radio broadcasting.
• AM stands for Amplitude Modulation, where the amplitude of the carrier wave is varied to transmit information.

• FM stands for Frequency Modulation, where the frequency of the carrier wave is varied to transmit information.

• AM is commonly used for broadcasting in the medium wave and long wave bands.

• FM is commonly used for broadcasting in the VHF (V...read more
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Q1. What are discrete components?
Ans. 
Discrete components are individual electronic components that are separate and distinct from each other.
• Discrete components are used to build electronic circuits.

• They are separate and distinct from integrated circuits.

• Examples of discrete components include resistors, capacitors, transistors, and diodes.
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Q2. What is ultrasonic sensor?
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An ultrasonic sensor is a device that uses sound waves with frequencies higher than the upper audible limit of human hearing to measure distances.
• Ultrasonic sensors emit high-frequency sound waves and measure the time it takes for the waves to bounce back after hitting an object.

• They are commonly used for distance measurement, object detection, and obstacle avoidance.

• Ultrasonic sensors can be found in various applicati...read more
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Q1. Tell me about myself?
Ans. 
The question is asking the interviewee to describe themselves.
• Provide a brief overview of your background, education, and experience.

• Highlight your skills and strengths that are relevant to the internship position.

• Mention any notable achievements or projects you have worked on.

• Discuss your career goals and how this internship aligns with them.

• Emphasize your enthusiasm, motivation, and willingness to learn and contribut...read more
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Q1. Basic Information
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Q2. Technical Round
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Q3. Fixed Fire Fighting Installation
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Q4. Types of Fire Extinguisher
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Types of fire extinguishers include water, foam, CO2, dry powder, and wet chemical.
• Water extinguishers are suitable for Class A fires (wood, paper, textiles)

• Foam extinguishers are suitable for Class A and B fires (flammable liquids)

• CO2 extinguishers are suitable for Class B and electrical fires

• Dry powder extinguishers are suitable for Class A, B, and C fires (flammable gases)

• Wet chemical extinguishers are suitable for
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Q5. Log out Tag Out
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Q1. Introduce yourself
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I am a recent graduate with a degree in Computer Science and a passion for coding and problem-solving.
• Recent graduate in Computer Science

• Passionate about coding and problem-solving
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Basic questions on electronic switches and electronics. Basic questions on coding

Q1. Is the power supplied from a socket alternating current (AC) or direct current (DC)?
Ans. 
Power supplied from a socket is alternating current (AC).
• Most household sockets provide AC power

• AC power changes direction periodically

• DC power is commonly used in batteries and some electronics
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Q2. What is the typical voltage and current supplied by an electrical socket?
Ans. 
Typical voltage supplied by an electrical socket is 120 volts, while the current can vary depending on the country and type of socket.
• Voltage supplied by an electrical socket is typically around 120 volts

• Current supplied can vary depending on the country and type of socket

• In the US, standard electrical sockets provide 120 volts AC at 15-20 amps

• In Europe, standard electrical sockets provide 230 volts AC at 16 amps
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Q3. How will you measure current if you are provided with a multimeter?
Ans. 
To measure current with a multimeter, set the multimeter to the current measurement mode, connect the multimeter in series with the circuit, and read the current value displayed on the multimeter.
• Set the multimeter to the current measurement mode (usually denoted by 'A' for Amperes)

• Turn off the power to the circuit before connecting the multimeter in series

• Connect the multimeter in series with the circuit - place the m...read more
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Q4. The interviewer drew a circuit having a dc source, resistor and a laser diode and asked us to name the components
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Q5. Questions about microcontroller Arduino
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Q6. How many pins does Arduino have, how will you code programs in it such questions
Ans. 
Arduino Uno has 14 digital pins and 6 analog pins for coding programs.
• Arduino Uno has 14 digital pins (0-13) and 6 analog pins (A0-A5)

• Digital pins can be used for input/output operations while analog pins can read analog signals

• To code programs in Arduino, you can use the Arduino IDE and write C/C++ based sketches
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