Lumax Industries Operator Interview Questions and Answers

General English, Maths,Basics in Diploma.

Q1. Communication skills, knowledge development and Aptitude,Life Goals.
Add your answer
Q2. Self details and discuss with some company benefits. Salary discussion
Add your answer
Q3. Some company rules and regulations share with me.
Add your answer

Q1. What is an advantage of mass production?
Ans. 
Mass production allows for lower costs due to economies of scale.
• Lower production costs per unit

• Increased efficiency in production processes

• Ability to meet high demand quickly

• Consistent quality control measures

• Examples: assembly line production in automotive industry, electronics manufacturing
Answered by AI
View 1 more answer
Q2. How to indicate fundamental deviation of hole in BIS system?
Ans. 
Fundamental deviation of hole in BIS system can be indicated by specifying the tolerance zone and the position of the hole.
• Specify the tolerance zone for the hole based on the BIS system standards.

• Measure the actual position of the hole and compare it to the specified tolerance zone.

• If the actual position of the hole falls outside the tolerance zone, indicate it as a fundamental deviation.
Answered by AI
Add your answer

Q1. What mechanism is used to convert linear motion of plunger to rotary motion of pointer in D.T.I?
Ans. 
A rack and pinion mechanism is used to convert linear motion of plunger to rotary motion of pointer in D.T.I.
• Rack and pinion mechanism consists of a gear (pinion) that meshes with a linear gear (rack) to convert linear motion into rotary motion.

• As the plunger moves linearly, it engages with the rack which in turn rotates the pinion, causing the pointer to move.

• This mechanism is commonly used in devices like dial indica...read more
Answered by AI
View 1 more answer

Q1. SMT related questions
Add your answer
Q2. Smt operator
Add your answer

Q1. Where are you living?
View 1 more answer
Q2. Why are you leaving your last company?
View 2 more answers

Q1. Circuit diagram of relay holding.
Ans. 
A relay holding circuit diagram is used to keep the relay in the energized state even after the control signal is removed.
• The circuit typically includes a holding contact that maintains the relay coil energized.

• A latching relay can also be used for holding without continuous power supply.

• Examples: ladder logic diagram with a holding contact, latching relay circuit diagram.
Answered by AI
Add your answer
Q2. What is PNP and NPN
Ans. 
PNP and NPN are types of bipolar junction transistors commonly used in electronic circuits.
• PNP transistor has a layer of N-type semiconductor between two layers of P-type semiconductor, while NPN transistor has a layer of P-type semiconductor between two layers of N-type semiconductor.

• In a PNP transistor, current flows from the emitter to the base and then to the collector, while in an NPN transistor, current flows fro...read more
Answered by AI
Add your answer
Q3. How many type of sensor?
Ans. 
There are various types of sensors used for different purposes.
• Temperature sensors (e.g. thermocouples, thermistors)

• Pressure sensors (e.g. piezoelectric sensors)

• Motion sensors (e.g. accelerometers, gyroscopes)

• Proximity sensors (e.g. ultrasonic sensors)

• Light sensors (e.g. photodiodes, phototransistors)
Answered by AI
Add your answer
Q4. What is PLC and full form?
Ans. 
PLC stands for Programmable Logic Controller, which is a digital computer used for automation of electromechanical processes.
• PLC is used to control machinery in manufacturing processes, such as assembly lines, robotic devices, or any activity that requires high reliability control.

• It is programmed using a specialized computer language, typically ladder logic or function block diagram.

• PLCs are commonly used in industrie...read more
Answered by AI
Add your answer

Q1. What is mean of TTR & why required for powder coating process ?
Ans. 
TTR stands for Total Thickness Range and is required for powder coating process to ensure proper adhesion and durability.
• TTR is the range of thickness of the substrate and any coatings applied to it

• It is important for powder coating as it ensures proper adhesion and durability

• If the TTR is too large, the coating may not adhere properly or may crack and peel over time

• Examples of substrates with varying TTR include alumi
Answered by AI
View 16 more answers
Q2. What is mean of detection & prevention pokayoke?
Ans. 
Detection and prevention poka-yoke refers to the use of techniques to identify and prevent errors in a process.
• Poka-yoke is a Japanese term for mistake-proofing

• Detection poka-yoke involves identifying errors as they occur

• Prevention poka-yoke involves designing processes to prevent errors from occurring

• Examples of poka-yoke include using checklists, color-coding, and physical barriers

• Poka-yoke can improve quality, reduc
Answered by AI
View 6 more answers
Q3. Which condition PH decrease in conversion coating?
Ans. 
Decrease in pH can occur due to various factors in conversion coating.
• Decrease in pH can be caused by the addition of an acid or acidic solution.

• Presence of reactive metals in the coating can lead to a decrease in pH.

• Contamination by organic materials or impurities can also lower the pH.

• Chemical reactions during the conversion coating process may result in pH decrease.

• Examples of conversion coatings include phosphating
Answered by AI
View 1 more answer
Q4. How to prepared 0.1 N H2so4 & Naoh ?
Ans. 
To prepare 0.1 N H2SO4 & NaOH, calculate the required amount of solute and dissolve it in distilled water.
• Calculate the molar mass of H2SO4 and NaOH

• Determine the required amount of solute using the formula: N = (W/M) x (1000/V)

• Dissolve the calculated amount of solute in distilled water to make 1 liter of solution

• Standardize the solution using a primary standard

• Use a burette to measure the volume of solution needed for
Answered by AI
View 1 more answer
Q5. How to cross verify 0.1 normality H2so4?
Ans. 
To cross verify 0.1 normality H2SO4, use a standard solution of NaOH and an indicator.
• Prepare a standard solution of NaOH of known concentration.

• Add a few drops of an indicator such as phenolphthalein to the H2SO4 solution.

• Titrate the H2SO4 solution with the NaOH solution until the endpoint is reached.

• The endpoint is when the indicator changes color, indicating that all the H2SO4 has reacted with the NaOH.

• Calculate the...read more
Answered by AI
View 1 more answer
Q6. How to prepared ph buffer solution as per defined standard in tablet?
Ans. 
Prepare a pH buffer solution as per defined standard in tablet.
• Determine the required pH value and buffer capacity

• Select the appropriate buffer system and calculate the required amounts of buffer components

• Dissolve the buffer components in water and adjust the pH as necessary

• Check the pH and adjust if necessary

• Filter the solution and store in a clean container

• Use a calibrated pH meter to verify the pH of the solution
Answered by AI
View 2 more answers

Department and work related question.

Q1. Personal information
Add your answer
Q2. Education related question?
Add your answer