Atlas Copco Junior Mechanical Engineer Interview Questions and Answers

Q1. Basic of Electrical engineering and presence of mind
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Q1. What are your hobbies?
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Q2. Will you be able to complete the task given to you?
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Q3. What's your future goals and desires?
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Q1. Elevator related
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Q2. Regarding servicing of VFDs
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Q1. Identification of error
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By conducting thorough system analysis, testing, and utilizing diagnostic tools.
• Conduct thorough system analysis to understand the system's functionality and potential issues.

• Perform testing to identify any abnormalities or malfunctions in the system or equipment.

• Utilize diagnostic tools such as multimeters, oscilloscopes, and software programs to pinpoint errors.

• Review error logs and system documentation for clues on ...read more
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Q2. Repairing
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Q1. What is the control valve and operation
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A control valve is a device used to regulate the flow of a fluid in a system by varying the size of the flow passage.
• Control valves are commonly used in industries such as oil and gas, chemical, and power plants.

• They can be operated manually, pneumatically, electrically, or through a combination of these methods.

• The operation of a control valve involves adjusting the position of the valve plug or disc to control the fl...read more
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Q1. Salary expectations
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All Cummins engine questions

Q1. How types of Cummins engine
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Cummins engines are available in various types including diesel, natural gas, and hybrid options.
• Cummins diesel engines are commonly used in heavy-duty trucks and construction equipment

• Cummins natural gas engines are popular for use in buses and other transportation vehicles

• Cummins offers hybrid engines that combine diesel and electric power for increased efficiency

• Other types of Cummins engines include marine engines
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Q2. How types of stock
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There are two main types of stock: common stock and preferred stock.
• Common stock represents ownership in a company and typically comes with voting rights.

• Preferred stock usually does not have voting rights but has a higher claim on assets and earnings.

• Stock can also be classified based on market capitalization (small-cap, mid-cap, large-cap) or sector (technology, healthcare, finance).
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Q3. How types of thermostat
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Thermostats can be categorized into mechanical, electronic, programmable, and smart thermostats.
• Mechanical thermostats use a bimetallic strip to control temperature.

• Electronic thermostats use electronic sensors to detect temperature changes.

• Programmable thermostats allow users to set schedules for heating and cooling.

• Smart thermostats can be controlled remotely via smartphone apps and may have features like learning al...read more
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Q4. What engine attended saying in model
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The question is asking about the engine specifications of a specific model.
• Identify the specific model being referred to

• Provide details about the engine specifications of that model

• Include any unique features or upgrades of the engine
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Q5. What is cooling system
Ans. 
Cooling system is a mechanism used to remove heat from a space or substance to maintain a lower temperature.
• Cooling systems can be found in various applications such as air conditioning units, refrigerators, and computer systems.

• They typically involve the circulation of a coolant or refrigerant to absorb and transfer heat away from the desired area.

• Cooling systems can be either air-cooled or liquid-cooled, depending on
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Q1. Communication between PLC controllers and DCS
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Communication between PLC controllers and DCS involves establishing a reliable connection for data exchange.
• PLC controllers and DCS communicate through various communication protocols such as Modbus, Profibus, Ethernet/IP, etc.

• Data is exchanged between PLC controllers and DCS for process control and monitoring.

• Communication can be bidirectional, allowing both systems to send and receive data.

• Proper configuration and pr...read more
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Q2. PID tunning and control
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Q1. Why do you wanna join ABB
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Q2. What make you chose abb over other companies
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Q1. Previous experience and project related technical questions.
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Q2. Basic Electrical engineering questions from previous experience
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Q1. Which direction motor run
Ans. 
The direction a motor runs depends on the type of motor and the wiring configuration.
• The direction of rotation can be determined by the motor's design and the direction of the current flow.

• Some motors can run in both clockwise and counterclockwise directions depending on the wiring.

• Reversing the polarity of the power supply can change the direction of rotation in some motors.
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Q2. How made delta connection in motor terminal box
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Delta connection in motor terminal box is made by connecting the three motor terminals in a triangular configuration.
• Connect the three motor terminals labeled U, V, and W in a triangular configuration.

• Ensure proper insulation and secure connections to prevent short circuits.

• Use appropriate tools and follow manufacturer's guidelines for wiring.

• Double check the connections before powering up the motor to avoid damage.

• Con...read more
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