Cactus Communications Engineer Interview Questions and Answers

Q1. Thermal engineering questions
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Q1. CFD Simulation questions
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Quantitative,Logical puzzles, basic electronics

Q1. Difference between microcontroller and processor
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A microcontroller is a compact integrated circuit designed to perform specific tasks, while a processor is a general-purpose device used for executing instructions.
• Microcontrollers typically have built-in memory and peripherals for specific applications, while processors require external components for operation.

• Microcontrollers are commonly used in embedded systems like IoT devices and consumer electronics, while proc...read more
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Q2. Application of bode plot and nyquist plot
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Bode plot and Nyquist plot are used in control systems to analyze the stability and frequency response of a system.
• Bode plot is used to analyze the frequency response of a system by plotting the magnitude and phase of the transfer function against frequency.

• Nyquist plot is used to analyze the stability of a system by plotting the frequency response on a complex plane.

• Bode plot helps in understanding the gain and phase ...read more
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Q3. Difference between van neuman and harvard architecture
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The main difference between von Neumann and Harvard architecture is the separation of data and instruction memory.
• Von Neumann architecture uses a single memory space for both data and instructions, while Harvard architecture uses separate memory spaces for data and instructions.

• Harvard architecture allows for simultaneous access to data and instructions, leading to potentially faster performance.

• Von Neumann architectur...read more
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Q1. Tell me routing consideration for harness
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Routing consideration for harness involves planning the path of wires to ensure proper organization and avoid interference.
• Consider the length of wires to minimize signal loss

• Plan for proper separation of power and signal wires to avoid interference

• Avoid sharp bends and tight corners to prevent damage to wires

• Use cable ties or harness tape to secure and organize the wires

• Consider the thermal and mechanical stress on th
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Q1. What is wire standards
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Wire standards refer to the specifications and guidelines set for the design, construction, and testing of electrical wires.
• Wire standards ensure safety, reliability, and compatibility of electrical wiring systems.

• They cover aspects such as wire size, insulation material, voltage rating, and temperature resistance.

• Examples of wire standards include NEC (National Electrical Code), UL (Underwriters Laboratories), and IEC...read more
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Q2. Tell me factors affecting resistance of wire?
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Factors affecting resistance of wire include material, length, cross-sectional area, and temperature.
• Material: Different materials have different resistivities, affecting resistance.

• Length: Longer wires have higher resistance due to increased collisions between electrons and atoms.

• Cross-sectional area: Thicker wires have lower resistance as there is more space for electrons to flow.

• Temperature: Resistance increases wit...read more
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Q1. Basic simulink, timers, counters, solvers
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Q1. How Canoe simulation works
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Canoe simulation is a software tool used for modeling and simulating the behavior of automotive electronic control units (ECUs) in a virtual environment.
• Canoe simulation allows engineers to test and validate the functionality of ECUs before physical implementation in vehicles.

• It can simulate various communication protocols such as CAN, LIN, and FlexRay to mimic real-world scenarios.

• Engineers can create and execute test...read more
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Q1. Why are you leaving company
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Q1. Technical questions as per the role they are applied
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Q2. SQL related questions, database questions
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Asking the people to write some queries depending on the use care provided