30+ Mechanic Interview Questions and Answers

I use various types of bearings depending on the specific application and requirements.

• I am familiar with ball bearings, roller bearings, and needle bearings.

• I have experience with different bearing specifications such as size, load capacity, and speed rating.

• For example, in automotive applications, I often use ball bearings with specifications like 6205-2RS (double sealed) or 6304-ZZ (metal shielded).

Plant maintenance activities involve regular inspections, repairs, and preventive measures to ensure optimal functioning of machinery and equipment.

• Regular inspections of machinery and equipment to identify any issues or potential problems

• Performing routine maintenance tasks such as lubrication, cleaning, and filter replacements

• Repairing or replacing faulty components or parts

• Conducting preventive maintenance activities to prevent breakdowns or malfunctions

• Calibrating and adj...read more

Various types of equipment are used in the plant including pumps, compressors, turbines, boilers, and heat exchangers.

• Pumps

• Compressors

• Turbines

• Boilers

• Heat exchangers

1000 RPM is a measurement of the number of revolutions a machine makes in one minute.

• 1000 RPM means the machine is making 1000 complete revolutions in one minute

• It is commonly used to measure the speed of engines or rotating machinery

• Higher RPM indicates faster rotation speed, while lower RPM indicates slower speed

ABS is a safety system that prevents wheels from locking up during braking, allowing the driver to maintain steering control.

• ABS helps prevent skidding and loss of control during emergency braking

• It works by modulating brake pressure to individual wheels based on wheel speed sensors

• ABS is standard in most modern vehicles

• Examples of ABS brands include Bosch, Continental, and TRW

In emergency situations, stay calm, assess the situation, and take appropriate action.

• Stay calm and assess the situation

• Call for help if necessary

• Follow emergency protocols and procedures

• Provide first aid if trained to do so

• Evacuate the area if necessary

• Communicate with others involved in the situation

There are mainly three types of shock absorbers: hydraulic, pneumatic, and spring-based.

• Hydraulic shock absorbers use fluid to dampen vibrations and shocks.

• Pneumatic shock absorbers use air pressure to absorb shocks.

• Spring-based shock absorbers use springs to absorb shocks and vibrations.

• Examples include Monroe OESpectrum shocks, Bilstein B8 5100 series, and KYB Gas-a-Just shocks.

Check the DG set daily for optimal performance and maintenance.

• Check fuel levels and top up if necessary.

• Inspect for any leaks or damages.

• Monitor oil levels and change if needed.

• Test the battery and ensure it is charged.

• Run a load test to check the performance under load.

• Check for any unusual noises or vibrations.

• Inspect the cooling system for proper functioning.

• Keep a log of maintenance checks and repairs.

• Consult the manufacturer's manual for specific guidelines.

The number of injectors in an engine depends on the type and size of the engine.

• The number of injectors can range from 1 to 12 or more depending on the engine.

• Smaller engines typically have fewer injectors than larger engines.

• For example, a four-cylinder engine may have four injectors while a V8 engine may have eight.

• The exact number of injectors can be found in the engine specifications or by inspecting the engine itself.

CDI (Capacitor Discharge Ignition) and RR (Rectifier Regulator) units work together to regulate the electrical system in a motorcycle.

• CDI unit stores energy from the stator and releases it to the ignition coil to create a spark for combustion.

• RR unit regulates the voltage produced by the stator to prevent overcharging of the battery.

• CDI and RR units work in tandem to ensure proper ignition timing and electrical system stability.

• Example: In a motorcycle, the CDI unit controls ...read more

Yes, I am familiar with belt vulcanizing.

• I have experience in belt vulcanizing techniques.

• I am skilled in repairing and splicing conveyor belts using vulcanization methods.

• I am knowledgeable about the different types of vulcanizing equipment and materials.

• I can perform tasks such as belt preparation, hot splicing, and cold splicing.

• I have successfully completed belt vulcanizing projects in previous roles.

Diesel engine failures can be minor or major, with causes ranging from fuel system issues to mechanical problems.

• Minor failures include issues with fuel injectors, fuel filters, and glow plugs.

• Major failures can be caused by problems with the engine block, cylinder head, or piston rings.

• Other causes of major failures include overheating, lack of lubrication, and contaminated fuel.

• Regular maintenance and proper use can help prevent both minor and major failures.

Functioning abs refer to the abdominal muscles that are actively engaged and working properly.

• Functioning abs help with core stability and support the spine

• Exercises like planks, crunches, and leg raises can help strengthen the abs

• Proper nutrition and hydration are important for maintaining functioning abs

The role of brakes is to slow down or stop a vehicle by converting kinetic energy into heat energy.

• Brakes are essential for safe driving and prevent accidents.

• They work by applying friction to the wheels, which slows down the vehicle.

• There are different types of brakes, including disc brakes and drum brakes.

• Regular maintenance and inspection of brakes is important to ensure they are functioning properly.

• In emergency situations, anti-lock brakes (ABS) can help prevent skidding...read more

BMW is a German luxury automobile manufacturer known for its high-performance vehicles and innovative technology.

• BMW stands for Bayerische Motoren Werke AG

• Founded in 1916, BMW is headquartered in Munich, Germany

• BMW is known for its luxury vehicles, motorcycles, and engines

• The BMW logo represents a rotating airplane propeller, paying homage to the company's aviation history

• BMW's M division produces high-performance versions of their regular models, such as the M3 and M5

Gears are mechanical devices that transmit motion and power between rotating shafts. There are various types of gears including spur, helical, bevel, and worm gears.

• Gears are mechanical components with teeth that mesh with each other to transmit motion and power.

• Spur gears have straight teeth and are the most common type of gear.

• Helical gears have angled teeth for smoother and quieter operation.

• Bevel gears have cone-shaped teeth and are used to transmit motion between interse...read more

The number of sensors in a bike varies depending on the make and model, but typically includes sensors for speed, temperature, and fuel levels.

• Number of sensors in a bike can range from 5 to 30 depending on the complexity of the bike.

• Common sensors in a bike include speed sensors, temperature sensors, fuel level sensors, and tire pressure sensors.

• Some high-end bikes may also have sensors for lean angle, suspension travel, and engine performance.

• Sensor technology in bikes is c...read more

A centrifugal pump is a mechanical device that uses rotating impellers to increase the pressure of a fluid.

• Uses rotating impellers to increase fluid pressure

• Commonly used in water treatment plants, HVAC systems, and oil refineries

• Works based on the principle of centrifugal force

• Converts mechanical energy into fluid energy

Stress is the force applied to a material, while strain is the resulting deformation or change in shape.

• Stress is the force applied to a material per unit area.

• Strain is the measure of deformation or change in shape of a material.

• Stress and strain are related by the material's modulus of elasticity.

• Example: When a rubber band is stretched, stress is applied to it causing strain in the form of elongation.

• Example: A metal rod under tension experiences stress which results in st...read more

Shree Cement is known for its high-quality products in the construction industry.

• Shree Cement uses advanced technology and strict quality control measures to ensure the best quality.

• Their products are known for their strength, durability, and consistency.

• Shree Cement has won several awards for their quality standards, such as the 'Golden Peacock National Quality Award'.

A mechanic works on repairing, maintaining, and troubleshooting mechanical systems and equipment.

• Diagnosing and fixing mechanical issues in vehicles, machinery, or equipment

• Performing regular maintenance tasks to ensure optimal performance

• Reading and interpreting technical manuals and diagrams

• Using various tools and equipment to complete repairs

• Testing and inspecting mechanical systems to identify problems

Yes, mechanic work can be physically demanding and requires strength and endurance.

• Mechanics often have to lift heavy parts and equipment

• They may have to work in uncomfortable positions or tight spaces

• Repetitive motions can lead to strain and fatigue

• Working with tools and machinery can be dangerous if not done properly

There are various types of engines used in vehicles, including gasoline, diesel, electric, and hybrid engines.

• Gasoline engines are commonly used in cars and motorcycles.

• Diesel engines are often found in trucks and heavy machinery.

• Electric engines are used in electric vehicles and produce zero emissions.

• Hybrid engines combine both gasoline and electric power sources.

An h2 sensor is a hydrogen sensor used to detect the presence of hydrogen gas in a given environment.

• H2 sensors are commonly used in industrial settings to monitor for leaks in hydrogen gas pipelines.

• They are also used in fuel cell vehicles to ensure safe operation.

• The sensor typically works by detecting changes in electrical conductivity when exposed to hydrogen gas.

The HT coil, also known as the high tension coil, is an essential component in the ignition system of a vehicle, responsible for generating high voltage to create a spark in the spark plugs.

• HT coil is a type of ignition coil used in vehicles to produce high voltage for the spark plugs

• It is typically located near the engine and connected to the distributor or ignition module

• A faulty HT coil can result in misfiring, rough idling, and poor engine performance

TPS sensor stands for Throttle Position Sensor, which monitors the position of the throttle valve.

• TPS sensor is a crucial component in the engine management system.

• It helps in determining the amount of air entering the engine.

• The sensor sends this information to the engine control unit (ECU) to adjust fuel injection and ignition timing.

• A faulty TPS sensor can cause issues like poor acceleration, stalling, or rough idling.

• Common signs of a bad TPS sensor include check engine l...read more

ABS brakes are a safety feature in vehicles that prevent wheels from locking up during braking, improving control and reducing stopping distances.

• ABS stands for Anti-lock Braking System

• Helps prevent skidding and loss of control during emergency stops

• Works by modulating brake pressure to individual wheels

• Commonly found in modern vehicles for improved safety

Bolls going refers to the process of cotton bolls opening up to reveal the cotton fibers inside.

• Bolls going is a term used in the cotton industry to describe the stage when cotton bolls start to open up and reveal the cotton fibers inside.

• This process is crucial for harvesting cotton as it allows for the fibers to be easily collected and processed.

• Example: During the bolls going stage, farmers closely monitor the cotton plants to determine the optimal time for harvesting.

Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor.

• Ohm's law is represented by the formula V = IR, where V is voltage, I is current, and R is resistance.

• It is named after the German physicist Georg Simon Ohm.

• The law is commonly used in electrical engineering to calculate the relationship between voltage, current, and resistance in a circuit.

• It helps in d...read more

The RPM odd meter measures the revolutions per minute of a vehicle's engine.

• The RPM odd meter is a crucial tool for mechanics to diagnose engine performance issues.

• It helps in determining if the engine is running too fast or too slow.

• An abnormal reading on the RPM odd meter could indicate a problem with the engine's timing or fuel delivery.

• For example, a high RPM reading could suggest a clogged fuel injector.

• Regularly checking the RPM odd meter can help prevent major engine p...read more