20+ Gmmco Interview Questions and Answers

Different processes used in engineering

• Two different processes in engineering are welding and soldering

• Welding involves melting and fusing two pieces of metal together

• Soldering involves melting a filler metal to join two pieces of metal together

• Welding is used for heavy-duty applications while soldering is used for electronics

• Welding requires higher temperatures and more equipment than soldering

Real-time problems in industries include equipment breakdowns, supply chain disruptions, and labor shortages.

• Equipment breakdowns can be solved by implementing regular maintenance checks and having backup equipment.

• Supply chain disruptions can be solved by diversifying suppliers and having contingency plans.

• Labor shortages can be solved by investing in employee training and development programs and offering competitive wages and benefits.

• Other real-time problems include cyber...read more

Artificial Intelligence and Machine Learning are the latest technologies in the field of Computer Science and Engineering.

• Artificial Intelligence (AI) is the simulation of human intelligence processes by machines, especially computer systems.

• Machine Learning (ML) is a subset of AI that allows systems to learn and improve from experience without being explicitly programmed.

• AI and ML are being used in various fields such as healthcare, finance, transportation, and more.

• Examples...read more

Recently attended breakdown vehicle had a faulty alternator. Resolved by replacing the alternator.

• The vehicle had a problem with the alternator.

• The issue was resolved by replacing the faulty alternator.

• Ensured proper installation and testing of the new alternator.

• Provided customer with instructions on how to prevent similar issues in the future.

To troubleshoot transmission, start by checking fluid levels, inspecting for leaks, testing the solenoids, and scanning for error codes.

• Check transmission fluid levels and condition

• Inspect for leaks in the transmission system

• Test the solenoids for proper functioning

• Scan for error codes using a diagnostic tool

Automatic transmission uses a torque converter to shift gears without manual input.

• Automatic transmission uses a torque converter to transfer power from the engine to the transmission.

• It has a set of planetary gears that automatically shift based on speed and load.

• The transmission control module (TCM) determines when to shift gears based on input from sensors.

• Examples of automatic transmission include CVT (Continuously Variable Transmission) and DCT (Dual Clutch Transmission)...read more

IC engine works on the principle of internal combustion where fuel is burned inside the engine to produce power.

• Fuel is mixed with air and ignited inside the engine

• The explosion pushes the piston which turns the crankshaft

• The crankshaft converts the linear motion of the piston into rotational motion

• The rotational motion is used to power the vehicle or machinery

• Examples include petrol engines, diesel engines, and gas turbines

Major applications in automotive sector include powertrain, chassis, safety, infotainment, and autonomous driving.

• Powertrain: engines, transmissions, drivetrains

• Chassis: suspension, steering, brakes

• Safety: airbags, seat belts, collision avoidance systems

• Infotainment: audio systems, navigation, connectivity

• Autonomous driving: sensors, software, control systems

To resolve hydraulic slow operations, check for leaks, inspect hydraulic fluid levels, clean or replace filters, and ensure proper maintenance.

• Check for leaks in the hydraulic system

• Inspect hydraulic fluid levels and top up if necessary

• Clean or replace filters to ensure proper flow

• Ensure regular maintenance of hydraulic components

A torque converter is a fluid coupling that transfers power from the engine to the transmission in an automatic vehicle.

• Converts and multiplies engine torque to allow smooth acceleration

• Consists of three main components: impeller, turbine, and stator

• Helps maintain engine speed while the vehicle is stopped or moving slowly

• Commonly used in automatic vehicles to provide smooth and efficient power transfer

A torque converter is a fluid coupling that transfers power from the engine to the transmission in an automatic vehicle.

• A torque converter allows the engine to keep running while the vehicle is stopped

• It uses fluid to transmit power from the engine to the transmission

• It consists of three main components: the impeller, turbine, and stator

• The impeller is connected to the engine, the turbine is connected to the transmission, and the stator redirects fluid flow for efficiency

• Comm...read more

Explain the warranty coverage to the customer and offer alternative solutions.

• Explain the specific terms of the warranty to the customer

• Apologize for any confusion or inconvenience caused

• Offer alternative solutions such as paid repair services or replacement options

• Ensure the customer feels valued and supported throughout the interaction

I will add value to your premium products by providing personalized solutions, exceptional customer service, and continuous product improvement.

• Offer personalized solutions tailored to each customer's specific needs and requirements

• Provide exceptional customer service to ensure customer satisfaction and loyalty

• Continuously work on product improvement based on customer feedback and market trends

• Educate customers on the unique features and benefits of the premium products

LRV stands for Light Rail Vehicle, a type of public transportation vehicle.

• LRV is a type of electrically powered public transportation vehicle that operates on tracks.

• LRVs are commonly used in cities for light rail transit systems.

• Examples of LRV manufacturers include Siemens, Bombardier, and Alstom.

Transmission system transfers power from the engine to the wheels, allowing the vehicle to move at different speeds.

• Transmission system uses gears to change the speed and torque of the vehicle.

• It consists of components like clutch, gearbox, propeller shaft, differential, and drive shaft.

• Different types of transmission systems include manual, automatic, CVT, and DCT.

• The working principle involves engaging and disengaging gears to match the engine speed with the wheel speed.

Valve lash is the gap between the rocker arm and the valve stem in an engine.

• Valve lash needs to be adjusted periodically to ensure proper engine performance.

• Too much valve lash can cause a noisy engine and reduced power output.

• Too little valve lash can cause the valves to not fully close, leading to poor fuel economy and engine damage.

• Valve lash is typically measured using feeler gauges.

• Examples of engines that require valve lash adjustments include overhead cam engines and ...read more

Travel speed can be changed by adjusting the throttle or gear settings on the vehicle.

• Adjust the throttle to increase or decrease speed

• Shift gears to change speed levels

• Use cruise control settings for consistent speed on highways

My last major complaint was regarding a malfunctioning equipment at a client site.

• Client reported equipment not functioning properly

• Visited client site to diagnose issue

• Identified faulty component and replaced it

• Tested equipment to ensure proper functioning

• Followed up with client to confirm issue was resolved

The first 7 steps in the diagnosis process involve gathering information, conducting tests, and analyzing results.

• 1. Gather patient's medical history and symptoms.

• 2. Perform physical examination.

• 3. Order relevant tests such as blood work or imaging.

• 4. Review test results and compare with normal ranges.

• 5. Formulate differential diagnoses based on findings.

• 6. Conduct further tests if necessary.

• 7. Confirm final diagnosis and develop treatment plan.

An engine is a machine that converts fuel into mechanical energy to power vehicles or machinery.

• Engines can be classified as internal combustion engines or external combustion engines

• Internal combustion engines are commonly used in cars, motorcycles, and small aircraft

• External combustion engines, such as steam engines, use an external heat source to generate steam which powers the engine

• Engines require regular maintenance to ensure optimal performance and longevity

• Common main...read more

Compression ratio is the ratio of the volume of the combustion chamber from its largest capacity to its smallest capacity.

• It is an important parameter in determining the performance of an internal combustion engine.

• It is calculated by dividing the volume of the combustion chamber when the piston is at the bottom of its stroke by the volume of the combustion chamber when the piston is at the top of its stroke.

• Higher compression ratios result in higher engine efficiency and pow...read more

There are two main types of engines: internal combustion engines and external combustion engines.

• Internal combustion engines: gasoline engines, diesel engines

• External combustion engines: steam engines

• Other types include rotary engines, electric engines, etc.

Hydraulic systems use fluid to transmit power and operate machinery.

• Hydraulic systems use incompressible fluid to generate power

• Fluid is pumped into cylinders to create pressure and movement

• Valves control the flow of fluid to different parts of the system

• Common examples include hydraulic lifts, brakes, and steering systems