Jyoti CNC Automation CNC Machine Operator Interview Questions and Answers

Q1. What is CNC longform
Ans. 
CNC stands for Computer Numerical Control.
• CNC is a technology that uses computerized systems to control machine tools.

• It involves the use of pre-programmed software to dictate the movement and operation of the machines.

• CNC machines are widely used in manufacturing industries for tasks such as cutting, drilling, milling, and shaping materials.

• They offer high precision, repeatability, and automation in the production pro...read more
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Q2. CNC longform is a computer Neumerecal control
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Q1. 1 millimetre is equal to how many micron
Ans. 
1 millimetre is equal to 1000 micron.
• 1 millimetre is a unit of length in the metric system.

• Micron is a unit of length equal to one millionth of a meter.

• To convert millimetres to microns, multiply the value by 1000.

• For example, 5 millimetres is equal to 5000 microns.
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Q2. What you do if your job removed from the chuck
Ans. I press the emergency button
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Q1. What is CNC full form? 1 mm is equal to how many micron?
Ans. 
CNC stands for Computer Numerical Control. 1 mm is equal to 1000 microns.
• CNC machines are automated tools that use pre-programmed software to control movement of tools and machinery.

• Micron is a unit of measurement used to measure very small distances, equal to one millionth of a meter.

• 1 mm is equal to 1000 microns.
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Q1. What is the difference between first angle projection and third angle projection?
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Contains MCQ of 30 technical question and 30 aptitude

General topic

Q1. Questions from resume especially from Area of interest
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Q1. Tell me about yourself.
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Q1. Strength and weakness About company
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Basic aptitude test that covers most aptitude topics.

GD round with general topics.

Q1. Technical round that covers basics of control valves.
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Q1. HR round consists of basic managerial questions.
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Simple Aptitude test

Around 10 people per group

Q1. Mostly Technical and from Resume
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Q1. More of "Fit for company" questions
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Q1. What is difference between RTD and thermocouple used
Ans. 
RTD measures temperature using resistance change, while thermocouple uses voltage change.
• RTD stands for Resistance Temperature Detector, while thermocouple generates voltage based on temperature difference.

• RTDs are more accurate and stable compared to thermocouples.

• RTDs have higher initial cost but lower long-term maintenance cost.

• Thermocouples are more rugged and can withstand higher temperatures than RTDs.

• Example: RT...read more
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Q2. What is the PLC and DCS system
Ans. 
PLC and DCS systems are control systems used in industrial automation to monitor and control processes.
• PLC stands for Programmable Logic Controller, used for controlling machinery and processes in manufacturing.

• DCS stands for Distributed Control System, used for controlling complex processes across multiple locations.

• PLCs are typically used for discrete control applications, while DCS systems are used for continuous co...read more
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Q3. What is the AC And DC drive
Ans. 
AC and DC drives are types of electrical drives used to control the speed and torque of electric motors.
• AC drive controls the speed of an AC motor by varying the frequency of the electrical supply.

• DC drive controls the speed of a DC motor by varying the voltage supplied to the motor.

• AC drives are more commonly used in industrial applications due to their efficiency and flexibility.

• DC drives are often used in applicatio...read more
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Q4. What do you understand by 4 wire and 2 wire
Ans. 
4 wire and 2 wire are configurations used in electrical circuits for measuring resistance.
• 4 wire configuration is used for accurate resistance measurements by eliminating lead resistance

• 2 wire configuration is simpler but less accurate due to lead resistance affecting measurements

• Examples: 4 wire used in precision instruments like multimeters, 2 wire used in basic circuit testing
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Q1. Technically about company like safety..
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Q2. What is 5s and devine
Ans. 
5S is a methodology used to organize and maintain a clean and efficient workplace.
• 5S stands for Sort, Set in Order, Shine, Standardize, and Sustain.

• It involves organizing and labeling tools and materials, cleaning and maintaining equipment, and creating a culture of continuous improvement.

• Example: A factory implementing 5S might label all tools and materials, create a designated storage area for each item, and regularl...read more
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