Astra Microwave Products Rf Testing Engineer Interview Questions and Answers

Q1. How to choose mosfet
Ans. 
Choose a MOSFET based on voltage, current, power dissipation, switching speed, and package type.
• Consider voltage and current requirements

• Look at power dissipation and thermal considerations

• Evaluate switching speed needed for the application

• Choose the appropriate package type for mounting and heat dissipation

• Check for additional features like built-in protection circuits

• Example: For high power applications, choose a MOS
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Q1. About your experience
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Q1. Question from sheet metal domain Material science And previous work experience
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Q1. Basic engineering questions Work experience
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Q1. Salary negotiation and doj
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Q1. Tell your experience about assembly tooling?
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Q2. How tooling elements you have designed and material selection?
Ans. 
I have designed various tooling elements and selected materials based on their properties and application requirements.
• Designed tooling elements for manufacturing processes such as injection molding, stamping, and machining

• Selected materials based on properties such as strength, durability, and heat resistance

• Considered application requirements such as cost, weight, and environmental factors

• Examples include designing i...read more
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Q3. Manufacturing process used?
Ans. 
We use a combination of CNC machining and injection molding for our manufacturing process.
• CNC machining is used for precision parts

• Injection molding is used for high volume production

• We also use 3D printing for prototyping

• Our manufacturing process is constantly evolving to improve efficiency and quality
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Q4. Surface finish requirement for tooling elements?
Ans. 
Surface finish requirement for tooling elements is critical for achieving desired product quality.
• Surface finish affects the performance of the tooling element.

• It impacts the appearance and functionality of the final product.

• Surface finish is measured in Ra (roughness average) or Rz (roughness depth).

• The required surface finish depends on the application and material being used.

• For example, a mirror finish may be requi...read more
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Q5. What is GD&T and tell about some symbols you used?
Ans. 
GD&T stands for Geometric Dimensioning and Tolerancing. It is a system of symbols and rules used to specify the geometry of mechanical parts.
• GD&T is used to ensure that parts fit together correctly and function properly.

• Some common symbols used in GD&T include concentricity, perpendicularity, and flatness.

• GD&T is often used in industries such as aerospace, automotive, and manufacturing.

• It allows for more precise commun...read more
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Q6. Which software u used?
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Q1. Why are you looking for a change?
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Q2. What is your expected salary?
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Q3. How soon u can join?
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Q1. Difference between armature voltage control field control?
Ans. 
Armature voltage control involves changing the voltage applied to the armature of a DC motor to control its speed, while field control involves changing the field current to control the motor's speed.
• Armature voltage control adjusts the voltage applied to the armature winding of a DC motor to control its speed

• Field control adjusts the field current in the motor to control its speed

• Armature voltage control is more commo...read more
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Q2. Design a boost converter?
Ans. 
A boost converter is a type of DC-DC converter that steps up the input voltage to a higher output voltage.
• Use a switch (usually a MOSFET) to control the energy flow from input to output

• Include an inductor to store and release energy

• Add a diode to allow current flow in one direction

• Use a capacitor to smooth out the output voltage

• Implement a control circuit to regulate the output voltage
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Q1. Do you have experience in aerospace space industrys
Ans. 
I have foundational knowledge and some hands-on experience in aerospace engineering projects, focusing on design and analysis.
• Completed a project on aerodynamics simulation using software like ANSYS Fluent.

• Interned at an aerospace company where I assisted in testing drone prototypes.

• Participated in a university competition to design a small satellite.

• Studied aerospace materials and their applications in aircraft design
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Q2. How to devloped this company simply advice
Ans. 
To develop the company, focus on innovation, customer satisfaction, and efficient processes to drive growth and success.
• Invest in research and development to create innovative products, like introducing eco-friendly materials in manufacturing.

• Enhance customer service by implementing a feedback system to address client concerns promptly, similar to Zappos' customer-first approach.

• Streamline operations by adopting lean m...read more
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Aptitude will be quantitative aptitude and some verbal ability questions. Along with that 25 technique question based on the branch will be asked

Q1. Started by introduce yourself. Then, questions are based on my resume. Also asked me that have you done any RC car as mini project. I said yes, and for the next few minutes questions based on motor drivers...read more
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