Eta Technology Interview Questions and Answers

Q1. How to calculate ppm of dosing?
Ans. 
PPM of dosing can be calculated by dividing the weight of the solute by the weight of the solution and multiplying by 1,000,000.
• Calculate the weight of the solute (in grams)

• Calculate the weight of the solution (in grams)

• Divide the weight of the solute by the weight of the solution

• Multiply the result by 1,000,000 to get the ppm
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Q2. What is aerobic and anaerobic digestor.Explain FM ratio
Ans. 
Aerobic and anaerobic digesters are systems used to break down organic matter. FM ratio is the ratio of food waste to microorganisms in the digester.
• Aerobic digester uses oxygen to break down organic matter, while anaerobic digester operates without oxygen.

• Aerobic digesters are faster but require more energy, while anaerobic digesters are slower but more energy efficient.

• FM ratio (Food to Microorganism ratio) is the ra...read more
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Q1. Any previous experience in pump and Motors and electrical component.
Ans. 
Yes, I have extensive experience in pump and motors as well as electrical components.
• I have worked with various types of pumps and motors, including centrifugal pumps and induction motors.

• I am familiar with troubleshooting and repairing electrical components such as circuit breakers and control panels.

• I have experience in conducting preventive maintenance on pumps and motors to ensure optimal performance.

• I have knowled...read more
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Q2. What are your salary experience .
Ans. 
I have 5 years of experience in the construction industry with a salary range of $50,000 to $70,000.
• 5 years of experience in construction industry

• Salary range between $50,000 to $70,000

• Familiar with industry standards for compensation

• Negotiated salary increases based on performance

• Received bonuses for meeting project deadlines
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Q1. Technical information
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Q2. Vernier caliper use
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Q3. Vernier caliper list count
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Q4. Sleep gauge use
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Q1. Technical
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Q1. About my experience with earlier organizationa
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Q2. About my reasons for quitting last emplyment
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Q1. Some basics questions regarding my graduation subjects.
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Q2. Want to check my problem solving abilities
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Normal test for releted filed of position

Q1. Manufacturing process
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Q2. Introduction yourself in breif
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Q1. Implementation of gd&t
Ans. 
GD&T is a system for defining and communicating engineering tolerances.
• GD&T stands for Geometric Dimensioning and Tolerancing

• It is used to define the allowable variations in form, size, and orientation of part features

• GD&T symbols are used on engineering drawings to specify the desired tolerances

• Proper implementation of GD&T can improve the quality and manufacturability of a design
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Q2. Advantage gd&t and what is bonus tolerance
Ans. 
GD&T provides precise communication of design requirements, while bonus tolerance allows for additional variation beyond basic tolerances.
• GD&T (Geometric Dimensioning and Tolerancing) ensures clear and precise communication of design requirements

• It allows for more detailed control over form, orientation, location, and profile of features

• Bonus tolerance is an additional tolerance that can be applied to a feature beyond ...read more
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Q3. Types of fits and advantages
Ans. 
Types of fits include clearance fit, interference fit, and transition fit, each offering different advantages.
• Clearance fit: allows for easy assembly and disassembly, used in applications where relative motion is required (e.g. sliding fits)

• Interference fit: provides a tight connection with no relative movement, used in applications where rigidity is important (e.g. press fits)

• Transition fit: offers a compromise betwee...read more
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Q4. Expalain spring back effect in details
Ans. 
Spring back effect is the tendency of a material to return to its original shape after being deformed.
• Spring back effect occurs in materials like metals, plastics, and composites.

• It is caused by the release of internal stresses that were introduced during the forming process.

• Factors affecting spring back include material properties, forming process, and tooling design.

• Examples include metal sheets returning to their or
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Q5. What are the product designguidelines
Ans. 
Product design guidelines are principles and standards that help ensure the quality, functionality, and manufacturability of a product.
• Consider the target audience and their needs

• Ensure the design is user-friendly and intuitive

• Follow industry standards and regulations

• Optimize for manufacturability and cost-effectiveness

• Prioritize safety and durability

• Incorporate feedback from stakeholders and end-users

• Use sustainable m...read more
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Q1. Electrical Engineering Questions
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Q2. Electrical Testing
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Q1. Engineering Questions
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Q2. Work location
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Group discussion about past job and experience

Numerical questions and reasoning

Q1. Salary negotiation
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Q1. Final round with German team
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30 question of c code snippet 5 question of aptitude and 2 coding question

Q1. Storage class in c
Ans. 
Storage classes in C define the scope and lifetime of variables.
• There are 4 storage classes in C: auto, register, static, and extern.

• Auto variables are stored in memory and have local scope.

• Register variables are stored in CPU registers for faster access.

• Static variables retain their value between function calls.

• Extern variables are declared outside of any function and can be accessed by other files.
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Q2. Mutex and semaphore
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