Preet Tractors Mechanical Maintenance Supervisor Interview Questions and Answers for Experienced

A diesel generator works by converting diesel fuel into mechanical energy which is then converted into electrical energy.

• Diesel fuel is injected into the combustion chamber where it ignites and creates high pressure gases that push the piston down, creating mechanical energy.

• The mechanical energy is then converted into electrical energy through the use of an alternator.

• The alternator uses a magnetic field and a conduct...read more

A diesel engine works by compressing air in the cylinder, which heats up and ignites the fuel injected into the cylinder.

• Air is drawn into the cylinder and compressed by the piston

• The compressed air heats up and ignites the fuel injected into the cylinder

• The explosion pushes the piston down, which turns the crankshaft and powers the engine

• Diesel engines are more efficient than gasoline engines because they compress the...read more

A train doesn't need a differential because its wheels are fixed to the same axle and rotate at the same speed.

• Train wheels are fixed to the same axle

• Wheels rotate at the same speed

• Differential is used in vehicles with wheels that rotate at different speeds

• Differential allows for smooth turning

Petrol engines have lower compression ratios compared to diesel engines.

• Petrol engines have lower compression ratios to prevent knocking or detonation.

• Diesel engines have higher compression ratios to ignite the fuel without spark plugs.

• Higher compression ratios in diesel engines result in better fuel efficiency and torque.

• Petrol engines require lower compression ratios to accommodate the lower octane rating of petrol f...read more

There are various types of electrical motors and transformers, each with their own unique wiring diagrams.

• Types of electrical motors include AC motors, DC motors, stepper motors, and servo motors.

• Transformers can be step-up, step-down, isolation, autotransformers, etc.

• Wiring diagrams vary depending on the specific motor or transformer being used.

• AC motors typically have a capacitor and a start winding in their wiring d...read more

I am a mechanical engineer with expertise in designing and analyzing mechanical systems.

• I have a Bachelor's degree in Mechanical Engineering from XYZ University.

• I have worked as a mechanical engineer for 5 years at ABC Company, where I designed and optimized mechanical components for various projects.

• I am proficient in CAD software such as AutoCAD and SolidWorks, and have experience in conducting simulations and stress...read more

Petrol engines use spark ignition while diesel engines use compression ignition.

• Petrol engines use spark plugs to ignite the fuel-air mixture, while diesel engines rely on compression to ignite the fuel.

• Petrol engines have a higher power-to-weight ratio compared to diesel engines.

• Diesel engines are more fuel-efficient than petrol engines.

• Petrol engines are typically used in cars, motorcycles, and small vehicles, while ...read more

Vernier calipers and micrometers are precision measuring tools used in mechanical engineering.

• Vernier calipers are used to measure dimensions with high accuracy, typically up to 0.02 mm.

• Micrometers are used for even more precise measurements, typically up to 0.001 mm.

• Both tools are commonly used in mechanical engineering for dimensional inspection and quality control.

• Vernier calipers have a sliding scale and a main sca...read more

I chose mechanical engineering because of my fascination with steam power and its applications.

• I have always been intrigued by the power and versatility of steam as a source of energy.

• Steam technology has a long history and has played a crucial role in the development of various industries.

• I find the principles of thermodynamics and fluid mechanics involved in steam systems to be intellectually stimulating.

• Working with...read more

Excel is a spreadsheet software used for organizing, analyzing and manipulating data.

• Excel allows users to create tables, charts, and graphs to represent data visually.

• It can perform complex calculations and analysis on large sets of data.

• Excel can be used for budgeting, financial analysis, project management, and more.

• It also has features for data validation, sorting, filtering, and conditional formatting.

• Excel can im...read more

Motivating workers is crucial for productivity and job satisfaction.

• Recognize and appreciate their efforts

• Provide opportunities for growth and development

• Create a positive work environment

• Set clear goals and expectations

• Offer incentives and rewards

• Encourage teamwork and collaboration