30+ Diploma Mechanical Engineer Interview Questions and Answers for Freshers

The materials commonly used for cylinder heads are cast iron, aluminum alloy, and sometimes steel.

• Cast iron is a popular choice for cylinder heads due to its high strength and heat resistance.

• Aluminum alloy cylinder heads are lightweight and offer better heat dissipation.

• Steel cylinder heads are used in high-performance engines for their superior strength and durability.

• Other materials like copper, bronze, and composite materials may also be used in specific applications.

Cranksoft is not a specific type of material.

• Cranksoft is not a recognized material in the field of mechanical engineering.

• It is possible that Cranksoft is a fictional or made-up material.

• Without further information, it is not possible to determine the properties or characteristics of Cranksoft.

Ace and Refrigerate are two different terms and cannot be compared as they are not related.

• Ace is a term used to describe someone who is very skilled or proficient in a particular activity or subject.

• Refrigerate is a term used to describe the process of cooling or preserving food or other perishable items.

• Ace and Refrigerate are not related to each other and cannot be compared.

Various types of brakes include disc brakes, drum brakes, regenerative brakes, electromagnetic brakes, and hydraulic brakes.

• Disc brakes use calipers to squeeze brake pads against a rotor to slow or stop the vehicle.

• Drum brakes use shoes that press against the inside of a drum to slow or stop the vehicle.

• Regenerative brakes convert kinetic energy into electrical energy to recharge the battery.

• Electromagnetic brakes use an electromagnetic field to create friction and slow or st...read more

Being a good mechanic has several benefits including job security, higher pay, and the ability to fix your own vehicles.

• Job security due to high demand for skilled mechanics

• Higher pay for experienced and knowledgeable mechanics

• Ability to fix your own vehicles and save money on repairs

• Opportunities for specialization in specific types of vehicles or systems

• Potential for entrepreneurship and owning your own repair shop

Universal coupling is a mechanical device used to connect two shafts at an angle and transmit torque.

• Universal coupling is also known as a universal joint or U-joint.

• It consists of two yokes connected by a cross-shaped member called a spider.

• The spider allows the two yokes to rotate independently of each other while transmitting torque.

• Universal couplings are commonly used in automotive drive shafts to accommodate misalignment and allow for smooth power transmission.

• They are ...read more

Sliding contact can be classified based on the type of motion and the nature of the surfaces in contact.

• Sliding contact can be classified as sliding, rolling, or twisting contact.

• Based on the nature of the surfaces in contact, sliding contact can be classified as dry or lubricated contact.

• Examples of sliding contact include the contact between brake pads and rotors, gears in a gearbox, and the contact between a piston and cylinder wall in an engine.

• Dry sliding contact can res...read more

Motor alignment is the process of ensuring that the rotational axes of the motor and driven equipment are parallel and properly positioned.

• Motor alignment is crucial for efficient and reliable operation of machinery.

• It involves aligning the motor shaft and the driven equipment shaft to minimize misalignment.

• Misalignment can cause excessive vibration, premature wear, and reduced efficiency.

• Common methods of motor alignment include using laser alignment tools or dial indicators...read more

The 90-degree elbow center has a short length of 25.4 and 38.1.

• A 90-degree elbow center is a pipe fitting used to connect two pipes at a 90-degree angle.

• The short length refers to the distance between the center of the elbow and the end of the fitting.

• In this case, there are two possible short lengths: 25.4 mm and 38.1 mm.

• The specific short length used will depend on the application and the size of the pipes being connected.

Pass can be supplied from one point to another point through various means such as pipes, conveyors, or cables.

• Pipes can be used to supply liquids or gases from one point to another.

• Conveyors can be used to transport solid materials from one point to another.

• Cables can be used to transmit electrical signals or power from one point to another.

• The choice of method depends on the nature of the material being transported and the distance between the two points.

Pneumatics is used for its simplicity, reliability, and cost-effectiveness in various applications.

• Pneumatic systems are easy to install and maintain.

• They are reliable and have a long lifespan.

• Pneumatics are cost-effective compared to other systems.

• They are used in various applications such as manufacturing, transportation, and construction.

• Examples include pneumatic drills, air compressors, and pneumatic cylinders.

As a Diploma Mechanical Engineer, my job involves designing, testing and maintaining mechanical systems and equipment.

• Designing mechanical systems and components

• Testing and evaluating prototypes

• Maintaining and repairing mechanical equipment

• Collaborating with other engineers and technicians

• Ensuring compliance with safety and quality standards

Gaskeet is a misspelling of gasket, which is a mechanical seal that fills the space between two or more mating surfaces. Tepnartep is not a known term.

• A gasket is used to prevent leakage between two surfaces, such as in an engine or piping system

• Gaskets can be made from a variety of materials, including rubber, silicone, metal, and paper

• Tepnartep is not a known term and may have been a misspelling or mispronunciation of another word

Fuel injection is a system that delivers fuel into an internal combustion engine in a controlled manner.

• Fuel injection replaces carburetors in modern engines.

• It improves fuel efficiency, power output, and emissions.

• There are different types of fuel injection systems, such as direct injection and port injection.

• Fuel injectors spray fuel into the combustion chamber or intake manifold.

• The amount of fuel injected is controlled by the engine's electronic control unit (ECU).

Zeiss is a leading manufacturer of accurate CMM machines used in precision engineering.

• Zeiss CMM machines are known for their high accuracy and precision.

• They are used in industries such as aerospace, automotive, and medical device manufacturing.

• Zeiss offers a range of CMM machines, including bridge, gantry, and horizontal arm models.

• Their machines use advanced software to analyze and measure complex geometries.

• Zeiss CMM machines are an essential tool for ensuring quality con...read more

Tools are objects or devices used to perform a specific task or function.

• Tools can be hand-held or power-operated

• Examples of tools include hammers, screwdrivers, drills, and saws

• Tools are essential for various industries such as construction, manufacturing, and automotive

• Proper use and maintenance of tools are important for safety and efficiency

CMM stands for Coordinate Measuring Machine.

• CMM is a device used to measure the physical geometrical characteristics of an object.

• It uses a probe to gather data points from the object's surface and creates a digital representation of its dimensions.

• CMMs are commonly used in manufacturing and quality control processes.

• They can measure dimensions such as length, width, height, and angles with high accuracy.

• CMMs can be manual, semi-automatic, or fully automatic, depending on the...read more

Mechanical sheel is not a commonly used term. It may be a misspelling of mechanical seal.

• Mechanical seal is a device that helps to prevent leakage between two moving parts in a machine.

• It is commonly used in pumps, compressors, and other rotating equipment.

• Mechanical seals can be classified into various types based on their design and application.

• Some common types of mechanical seals include cartridge seals, pusher seals, and bellows seals.

• Proper installation and maintenance ...read more

The question is unclear and needs clarification.

• The question needs to be rephrased or clarified.

• It is unclear what the interviewer is asking.

• More information is needed to answer the question.

The OD of 1" pipe is 33.4.

• OD stands for outer diameter.

• The measurement is in inches.

• The OD of a pipe is important for determining fittings and connections.

• The OD of a pipe can vary depending on the material and thickness.

• In this case, the OD of a 1" pipe is 33.4 mm.

Make refers to the manufacturer or producer of a product.

• Make is the brand or company that produces a product.

• It is often used interchangeably with manufacturer.

• For example, Honda is the make of a car while the model may be Civic or Accord.

Pumps are mechanical devices used to move fluids from one place to another.

• Pumps can be used to move liquids or gases.

• They are commonly used in industries such as oil and gas, water treatment, and chemical processing.

• Pumps can be classified into different types based on their design and application, such as centrifugal pumps, positive displacement pumps, and axial flow pumps.

• Examples of pumps include water pumps used in homes, fuel pumps used in cars, and vacuum pumps used in...read more

A centrifugal pump that can handle solids and debris without clogging.

• Sendryfuble pumps are commonly used in wastewater treatment plants.

• They have an impeller with vanes that can pass solids up to a certain size.

• These pumps are also used in mining and construction industries.

• They are designed to handle abrasive and corrosive fluids.

• Sendryfuble pumps are often used in applications where other types of pumps would fail.

A screw pump is a positive displacement pump that uses one or more screws to move fluids or materials along the screw's axis.

• Screw pumps are commonly used in industrial applications for transferring viscous fluids.

• They are also used in oil drilling and refining, wastewater treatment, and food processing.

• Screw pumps are known for their high efficiency and low noise levels.

• They can handle a wide range of fluids, including those with high solids content.

• Screw pumps come in vario...read more

My aspect CTC is to secure a competitive salary package that reflects my skills, qualifications, and experience as a Diploma Mechanical Engineer.

• I am looking for a CTC that aligns with industry standards and my level of expertise.

• I expect my CTC to be commensurate with my educational background and the responsibilities of the role.

• I am open to negotiation based on the company's compensation structure and benefits package.

• I value fair compensation that recognizes my contributi...read more

PSV stands for Pressure Safety Valve, a type of valve used to protect equipment from overpressure.

• PSV is a safety device used in various industries such as oil and gas, chemical, and power plants.

• It is designed to open and release excess pressure when the pressure inside a vessel or pipeline exceeds the set limit.

• PSVs come in different types such as spring-loaded, pilot-operated, and bellows-operated.

• PSVs are required by law and industry standards to ensure the safety of pers...read more

There are various types of mechanical engineering including automotive, aerospace, manufacturing, and robotics.

• Automotive engineering involves designing and developing vehicles and their components.

• Aerospace engineering deals with the design and development of aircraft and spacecraft.

• Manufacturing engineering focuses on the production of goods using various processes and technologies.

• Robotics engineering involves the design and development of robots for various applications.

Micrometer is a precision measuring instrument used to measure small distances or thicknesses.

• Micrometer is commonly used in mechanical engineering for precise measurements.

• It consists of a calibrated screw and a scale to measure the distance traveled by the screw.

• Micrometers are used to measure dimensions of various mechanical components such as shafts, bores, and gaps.

• They provide accurate measurements up to the thousandth of an inch or hundredth of a millimeter.

• Micrometers...read more

Training is essential for developing skills and knowledge in a specific field.

• Training helps in gaining practical experience and understanding of theoretical concepts.

• It enhances problem-solving abilities and improves technical skills.

• Training can be in the form of workshops, on-the-job training, or specialized courses.

• It is important to continuously update skills through training to stay relevant in the industry.

Parts of an engine include cylinder, piston, crankshaft, camshaft, valves, spark plug, fuel injector, connecting rod, flywheel, and timing belt.

• Cylinder - where combustion takes place

• Piston - moves up and down in the cylinder

• Crankshaft - converts linear motion to rotational motion

• Camshaft - controls the opening and closing of valves

• Valves - regulate the flow of air and fuel into the cylinder

• Spark plug - ignites the air-fuel mixture

• Fuel injector - delivers fuel into the cylind...read more

SI engines use spark plugs for ignition, while CI engines use compression for ignition.

• SI engines have a spark plug to ignite the air-fuel mixture, while CI engines rely on compression to ignite the fuel.

• SI engines are used in petrol/gasoline vehicles, while CI engines are commonly found in diesel vehicles.

• SI engines have a higher power-to-weight ratio compared to CI engines.

• SI engines are more fuel-efficient at low loads, while CI engines are more efficient at high loads.

• SI ...read more

Four types of what?

• Please specify the context or subject of the question

• Without proper context, it is impossible to provide a relevant answer