10+ Cummins Diploma Trainee Engineer Interview Questions and Answers

A resistor is an electronic component that limits the flow of electric current in a circuit.

• Resistors are used to control the amount of current flowing through a circuit.

• They are passive components that dissipate energy in the form of heat.

• Resistors are measured in ohms (Ω) and have color-coded bands to indicate their resistance value.

• They can be fixed resistors with a specific resistance value or variable resistors that can be adjusted.

• Resistors are commonly used in voltage ...read more

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers are used to increase or decrease the voltage levels in electrical power transmission and distribution systems.

• They consist of two or more coils of wire, known as windings, which are wound around a core made of magnetic material.

• The primary winding is connected to the input voltage source, while the secondary winding is connected to...read more

The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted.

• Energy is a conserved quantity

• It can be transferred between systems or converted from one form to another

• The law is also known as the law of conservation of energy

• It applies to all forms of energy including heat, work, and potential energy

• An example is the energy transfer that occurs when a hot object is placed in contact with a cold object

The first priority in Cummins is customer satisfaction.

• Customer satisfaction is the top priority for Cummins.

• Providing high-quality products and services to meet customer needs.

• Building strong relationships with customers and exceeding their expectations.

• Ensuring prompt and effective customer support and after-sales service.

• Continuous improvement and innovation to deliver value to customers.

The engine is a mechanical device that converts fuel into mechanical energy to power vehicles or machinery.

• Engines work by burning fuel in a combustion chamber to create high-pressure gases that drive pistons or turbines.

• Functions of an engine include intake, compression, combustion, and exhaust.

• Applications of engines include powering cars, trucks, airplanes, ships, generators, and more.

Microprocessors are general-purpose CPUs while microcontrollers are specialized for specific tasks.

• Microprocessors are used in computers, smartphones, and other devices that require general-purpose computing.

• Microcontrollers are used in embedded systems, such as home appliances, automotive systems, and medical devices.

• Microprocessors typically have more processing power and memory than microcontrollers.

• Microcontrollers often have built-in peripherals, such as timers, ADCs, an...read more

Cottar joints are used to connect two rods or bars end to end.

• Cottar joints are also known as sleeve and cotter joints.

• They are commonly used in mechanical and structural applications.

• The joint consists of a sleeve that fits over the ends of two rods and a cotter pin that is inserted through holes in the sleeve and the rods to hold them together.

• Cottar joints are used to transmit tensile loads and are not suitable for transmitting torque.

• Examples of applications include conne...read more

There are two types of satellite communication: geostationary and low earth orbit.

• Geostationary satellites are placed at a fixed point above the earth's equator and are used for TV broadcasting, weather forecasting, and military communication.

• Low earth orbit satellites are placed closer to the earth's surface and are used for GPS, satellite phones, and remote sensing.

• Satellite communication is important for global connectivity and communication.

Engine parts and their functions

• Piston - moves up and down in the cylinder to compress air-fuel mixture

• Cylinder - houses the piston and allows for combustion

• Crankshaft - converts linear motion of piston into rotational motion

• Camshaft - controls the opening and closing of valves

• Spark plug - ignites the air-fuel mixture in the cylinder

• Valves - control the flow of air and fuel into the cylinder and exhaust gases out

• Connecting rod - connects the piston to the crankshaft

Enthalpy is the sum of internal energy and pressure-volume work done by a system.

• Enthalpy is a thermodynamic property of a system.

• It is represented by the symbol 'H'.

• It is defined as the sum of internal energy and pressure-volume work done by a system.

• Enthalpy change is the difference between the enthalpies of the products and reactants in a chemical reaction.

• Enthalpy is used in various fields including chemistry, physics, and engineering.