Salzer Electronics Junior Mechanical Design Engineer Interview Questions and Answers

Q1. Related electrical question
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Q2. Like wire connection
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Q1. You have any experience
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Q2. No, I didn't have any experience
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71.72% in electrical engineering diploma

Q1. Basic questions
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Q2. Previous employer related
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Q1. Technical questions
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Q2. Machine related
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Over all plant related

Q1. Man power handle and previous employer related
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Q1. What is 3-phase 4 wair system
Ans. 
A 3-phase 4 wire system is a type of electrical system commonly used for power distribution.
• Consists of three conductors carrying alternating current at the same frequency, with a fourth neutral conductor

• Provides a more balanced and efficient power distribution compared to single-phase systems

• Commonly used in industrial and commercial applications for higher power requirements

• Example: Used in large factories, office bu
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Q2. Which of the following is a characteristic of digital signal
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A characteristic of digital signal is that it is discrete and represented by binary numbers.
• Digital signals are represented by discrete values

• Digital signals are represented by binary numbers (0s and 1s)

• Digital signals are less susceptible to noise compared to analog signals
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Q3. An electrical signal can be represented in either Thevenin form or Norton From. However, Norton representation is preferred when
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Norton representation is preferred when the load impedance is known and fixed.
• Norton representation is preferred when the load impedance is known and fixed, as it simplifies calculations.

• Thevenin representation is preferred when the load impedance is unknown or variable.

• Norton equivalent circuits are easier to analyze in terms of current flow and power calculations.

• Thevenin equivalent circuits are easier to analyze in
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Diploma in electrical engineering

Q1. Electrical engineering
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Q2. Electrical motor
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Q3. Electrical equipment
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Q1. Electrical maintenance
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Q2. Electrical motor
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Q1. Questions about high voltage and high current components.
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Q2. Questions on different topologies used in power supplies
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Q1. Conducting Material varieties
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Q2. Difference between copper busbar and aluminum bar
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Copper busbars have higher conductivity and better resistance to corrosion compared to aluminum bars.
• Copper busbars have higher conductivity than aluminum bars.

• Copper busbars have better resistance to corrosion compared to aluminum bars.

• Aluminum bars are lighter and cheaper than copper busbars.

• Aluminum bars are more prone to oxidation compared to copper busbars.
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Q3. Methods of Heat transfer
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Heat transfer methods include conduction, convection, and radiation.
• Conduction: Heat transfer through direct contact between materials (e.g. touching a hot pan)

• Convection: Heat transfer through the movement of fluids (e.g. boiling water)

• Radiation: Heat transfer through electromagnetic waves (e.g. feeling the warmth of the sun)
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Q4. Tolerance stack
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Q5. Types of Material and Various plastic
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Various types of materials and plastics used in engineering applications.
• Common types of materials include metals, polymers, ceramics, and composites

• Plastics are a type of polymer that can be categorized as thermoplastics or thermosets

• Examples of plastics include polyethylene, polystyrene, PVC, and ABS

• Materials selection is crucial in engineering design to ensure desired properties and performance
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