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Cummins Interview Questions and Answers
109 Interview questions
A DoL starter is a device used to control the starting and stopping of electric motors safely.
DoL stands for Direct-on-Line, meaning the motor is connected directly to the power supply.
It is commonly used for small motors, typically up to 5-10 HP.
The DoL starter includes a contactor and overload relay for protection.
Example: A DoL starter is often used in fans, pumps, and compressors.
Basic electrical concepts include voltage, current, resistance, and power, essential for understanding electrical systems.
Voltage (V): The electrical potential difference, measured in volts. Example: A standard household outlet provides 120V.
Current (I): The flow of electric charge, measured in amperes (A). Example: A light bulb may draw 0.5A.
Resistance (R): The opposition to current flow, measured in ohms (Ω). Ex...
A motor converts electrical energy into mechanical energy through electromagnetic principles.
Electric current flows through the motor's windings, creating a magnetic field.
The interaction between the magnetic field and rotor induces motion.
Types of motors include AC motors (e.g., induction motors) and DC motors (e.g., brushed motors).
Speed and torque can be controlled by varying voltage or frequency.
Applications r...
The two main types of transform are linear transform and nonlinear transform.
Linear transform involves scaling, rotation, and translation.
Nonlinear transform involves more complex transformations like bending or twisting.
Examples of linear transform include resizing an image or rotating an object.
Examples of nonlinear transform include warping an image or distorting a shape.
The least count of a scale is the smallest measurement that can be accurately read on that scale.
Least count is determined by the smallest division on the measuring instrument.
For a ruler with 1 mm divisions, the least count is 1 mm.
For a vernier caliper with 0.02 mm divisions, the least count is 0.02 mm.
In a digital scale, the least count may be 0.01 kg, indicating the smallest weight it can measure.
To look for a short circuit, check for any abnormal connections or damaged wires causing a direct path for current flow.
Inspect all wiring and connections for signs of damage or wear
Use a multimeter to test for continuity and resistance in the circuit
Look for any burnt or melted components indicating a short circuit
Check for any loose connections or exposed wires that could be causing a short circuit
The line between no and yes for a grey job is based on ethical considerations, legal implications, and personal values.
Consider the ethical implications of the job - does it involve any harm to others or unethical practices?
Evaluate the legal aspects of the job - does it comply with laws and regulations?
Reflect on your personal values and beliefs - does the job align with your principles and goals?
Seek advice from...
Petrol engines use spark plugs to ignite fuel, while diesel engines use compression to ignite fuel.
Petrol engines use spark plugs to ignite a mixture of fuel and air, while diesel engines rely on compression to ignite the fuel.
Petrol engines typically have higher RPMs and are more suitable for high-speed driving, while diesel engines have more torque and are better for towing.
Petrol engines are generally quieter a...
Yes, shop floor refers to the physical space where manufacturing or production takes place.
Shop floor is where the actual production or manufacturing activities occur.
It includes the machines, equipment, workstations, and assembly lines.
Quality inspection trainees need to be familiar with shop floor layout and processes.
Understanding shop floor dynamics helps in identifying potential quality issues and implementin...
The gases in engine exhaust typically include carbon dioxide, carbon monoxide, nitrogen oxides, hydrocarbons, and particulate matter.
Carbon dioxide (CO2) is a greenhouse gas produced during combustion.
Carbon monoxide (CO) is a toxic gas formed by incomplete combustion.
Nitrogen oxides (NOx) are pollutants that contribute to smog and acid rain.
Hydrocarbons are unburned fuel molecules that can react in the atmosphere...
Cummins Interview Experiences
243 interviews found
Anonymous
Selected
I applied via Naukri.com and was interviewed in Jul 2024. There were 2 interview rounds.
(2 Questions)
- Q1. How calculate the weight of plates
- Ans.
The weight of plates can be calculated by multiplying the density of the material by the volume of the plate.
Determine the density of the material the plate is made of (e.g. steel has a density of 7850 kg/m^3)
Measure the dimensions of the plate (length, width, thickness)
Calculate the volume of the plate using the formula: volume = length x width x thickness
Multiply the volume by the density to get the weight of the pla...
- Q2. How many types of mechanical tools
- Ans.
There are various types of mechanical tools used in construction and maintenance work.
Hand tools (e.g. hammer, screwdriver, wrench)
Power tools (e.g. drill, saw, grinder)
Heavy equipment (e.g. excavator, bulldozer, crane)
Measuring tools (e.g. tape measure, level, calipers)
(2 Questions)
- Q1. How many types of Beam
- Ans.
There are mainly three types of beams: Simply supported beam, Cantilever beam, and Overhanging beam.
Simply supported beam is supported at both ends and carries load in the middle.
Cantilever beam is supported at one end and carries load at the other end.
Overhanging beam has one or both ends extending beyond its supports.
- Q2. How many types of Flanges
- Ans.
There are several types of flanges used in piping systems for connecting pipes, valves, and other equipment.
Weld Neck Flange
Slip On Flange
Socket Weld Flange
Threaded Flange
Blind Flange
Lap Joint Flange
Orifice Flange
Site Supervisor Interview Questions asked at other Companies
Selected
I applied via Company Website and was interviewed in Sep 2024. There was 1 interview round.
(2 Questions)
- Q1. To operate the generator
- Q2. Look for a short circuit!
- Ans.
To look for a short circuit, check for any abnormal connections or damaged wires causing a direct path for current flow.
Inspect all wiring and connections for signs of damage or wear
Use a multimeter to test for continuity and resistance in the circuit
Look for any burnt or melted components indicating a short circuit
Check for any loose connections or exposed wires that could be causing a short circuit
Interview Preparation Tips
Electrical Maintenance Technician Interview Questions asked at other Companies
(4 Questions)
- Q1. What is the casting solidification time?
- Ans.
Casting solidification time is the duration it takes for molten metal to solidify in a casting process.
Casting solidification time depends on factors like material type, mold temperature, and casting geometry.
Higher pouring temperatures generally result in shorter solidification times.
Thicker sections of the casting will take longer to solidify compared to thinner sections.
Aluminum alloys typically have shorter solidif...
- Q2. How you decide the parting line?
- Q3. What are the Casting design consideration?
- Ans.
Casting design considerations include material selection, part geometry, draft angles, surface finish, and shrinkage.
Material selection is crucial for the desired properties and performance of the final part.
Part geometry should be designed to minimize stress concentrations and ensure proper flow of molten metal.
Draft angles are necessary for easy removal of the part from the mold.
Surface finish requirements should be ...
- Q4. Current and previous work experience.
CAD test-Housing model
(1 Question)
- Q1. About your self
Interview Preparation Tips
Design Engineer Interview Questions asked at other Companies
I applied via Campus Placement
(2 Questions)
- Q1. Motor working principle and how started
- Ans.
Motor converts electrical energy into mechanical energy. It starts by applying a voltage to the motor windings.
Motor converts electrical energy into mechanical energy
Motor starts by applying a voltage to the motor windings
Motor working principle involves the interaction between magnetic fields and current flow
Different types of motors include DC motors, AC motors, and stepper motors
- Q2. Pneumatic symbol and working principle
- Ans.
Pneumatic symbols represent components used in pneumatic systems, with arrows indicating the direction of air flow.
Pneumatic symbols are used to represent components like valves, cylinders, and pumps in pneumatic systems.
Arrows in the symbols indicate the direction of air flow through the component.
Common symbols include a circle for a valve, a rectangle for a cylinder, and a triangle for a pump.
Understanding these sym...
(2 Questions)
- Q1. Transformer about explanation and primary and secondary winding
- Q2. AC and DC About explain
Interview Preparation Tips
Maintenance Engineer Trainee Interview Questions asked at other Companies
Selected
I applied via Company Website and was interviewed in Aug 2024. There was 1 interview round.
(2 Questions)
- Q1. Transformers. And transmission and distribution au
- Q2. Power plant and transmission
Interview Preparation Tips
Diploma Trainee Engineer Interview Questions asked at other Companies
(2 Questions)
- Q1. Question on exhaust manifold loadings
- Q2. Question on fuel filter vibrations
Interview Preparation Tips
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. Market capture good relationship
- Q2. Market level questions
- Q3. Customer level questions
- Q4. Business level question
- Q5. 17 year market capture
Interview Preparation Tips
Area Sales Manager Interview Questions asked at other Companies
Selected
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. What is turbocharger
- Ans.
A turbocharger is a device that increases an engine's efficiency and power by forcing extra air into the combustion chamber.
Increased Power Output: Turbochargers can significantly boost an engine's horsepower by allowing more air and fuel to enter the combustion chamber.
Improved Fuel Efficiency: By recovering exhaust gases to spin the turbine, turbochargers can enhance fuel efficiency compared to naturally aspirated en...
- Q2. Type of parts diesal engine
- Ans.
Diesel engines consist of various parts that work together to convert fuel into mechanical energy efficiently.
Cylinder Block: The main structure housing the cylinders, where combustion occurs.
Pistons: Move up and down within the cylinders, converting combustion energy into mechanical energy.
Crankshaft: Converts the linear motion of the pistons into rotational motion to drive the vehicle.
Fuel Injector: Delivers precise ...
- Q3. Maintanence check for DG set
- Ans.
Regular maintenance checks for DG sets ensure reliability, efficiency, and longevity of the equipment.
Oil Level Check: Ensure the oil level is within the recommended range to prevent engine wear and overheating.
Fuel System Inspection: Check for leaks and ensure fuel filters are clean to maintain optimal fuel flow.
Battery Condition: Inspect battery terminals for corrosion and ensure the battery is charged to avoid start...
- Q4. Fuel pump & governor
- Q5. Engin firing order
Service Engineer Interview Questions asked at other Companies
Selected
I applied via Company Website and was interviewed in Jul 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Time where you solved a problem
- Ans.
Solved a production line bottleneck by implementing a new scheduling system
Identified bottleneck in production line causing delays
Researched and proposed new scheduling system to optimize workflow
Collaborated with team to implement new system and monitor results
- Q2. What skills do you have
- Ans.
I have a strong background in CAD software, problem-solving skills, and experience in process improvement.
Proficient in CAD software such as SolidWorks and AutoCAD
Strong problem-solving skills to troubleshoot manufacturing issues
Experience in process improvement to increase efficiency and reduce waste
(2 Questions)
- Q1. Weaknesses and strengths
- Ans.
My strength is attention to detail and problem-solving skills. My weakness is sometimes taking on too much work at once.
Strength: Attention to detail - I always ensure that every aspect of a project is thoroughly examined and executed correctly
Strength: Problem-solving skills - I am able to think creatively and find solutions to complex problems efficiently
Weakness: Taking on too much work - I have a tendency to overco...
- Q2. Time you worked in a team
- Ans.
I worked in a team on a project to improve production efficiency by implementing new automation technology.
Collaborated with team members to identify areas for improvement
Researched and evaluated different automation technologies
Worked together to develop a plan for implementation
Divided tasks among team members based on strengths and expertise
Regularly communicated progress and challenges to ensure project stayed on t...
Interview Preparation Tips
Manufacturing Engineer Interview Questions asked at other Companies
Selected
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. Diesel engine information
- Q2. Oracle system information
Procurement Buyer Interview Questions asked at other Companies
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Cummins Interview FAQs
Some of the top questions asked at the Cummins interview -
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Cummins Interviews By Designations
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Cummins Reviews and Ratings
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Rating in categories
|
Junior Shop Manager
1.4k
salaries
|  ₹1.7 L/yr - ₹10.4 L/yr |
|
Junior Manager
829
salaries
| ₹3.3 L/yr - ₹11 L/yr |
|
Diploma Trainee Engineer
519
salaries
| ₹1.1 L/yr - ₹3.3 L/yr |
|
Design Engineer
339
salaries
| ₹2.1 L/yr - ₹9 L/yr |
|
Service Engineer
279
salaries
| ₹1.1 L/yr - ₹9 L/yr |
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