Trans Auto International Maintenance Engineer Interview Questions and Answers

My areas of interest include electrical systems, mechanical systems, and preventive maintenance.

• Electrical systems: I have a strong interest in troubleshooting and repairing electrical systems, such as motors, control panels, and wiring.

• Mechanical systems: I enjoy working with mechanical components, such as pumps, valves, and conveyors. I have experience in maintaining and repairing these systems.

• Preventive maintenance...read more

There are several types of valves in instrumentation.

• Gate valve

• Ball valve

• Butterfly valve

• Globe valve

• Check valve

• Diaphragm valve

• Needle valve

• Plug valve

• Pressure relief valve

• Safety valve

Calibration of I/P converter involves adjusting the output pressure to match the input signal.

• Connect the I/P converter to a pressure source and a signal generator

• Adjust the input signal to the desired value

• Measure the output pressure and adjust it to match the input signal

• Repeat the process at different input signal levels to ensure accuracy

• Document the calibration results for future reference

A load cell is a transducer that converts force into an electrical signal. Calibration involves applying known loads and adjusting the output signal.

• Load cell measures force or weight

• It converts the force into an electrical signal

• Calibration involves applying known loads and adjusting the output signal

• Calibration can be done using a calibration machine or weights

• Calibration should be done regularly to ensure accurate r...read more

Die casting and machining defects are common in manufacturing processes.

• Die casting defects include porosity, shrinkage, cold shuts, and flash.

• Machining defects include burrs, chatter marks, and tool marks.

• Die casting defects can be caused by improper temperature, pressure, or metal flow.

• Machining defects can be caused by dull tools, improper speeds and feeds, or poor fixturing.

• Defects can lead to part failure, reduced...read more

Filling and high speed ratio formula is used to calculate the filling time of a container with a specific volume of liquid at a given flow rate.

• Filling and high speed ratio formula is V/Q

• V is the volume of the container and Q is the flow rate of the liquid

• The formula is used to determine the time it takes to fill a container with a specific volume of liquid at a given flow rate

• The higher the flow rate, the faster the c...read more

Different types of gears include spur gears, helical gears, bevel gears, worm gears, and rack and pinion gears.

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

• Helical gears have angled teeth and provide smoother and quieter operation compared to spur gears.

• Bevel gears have cone-shaped teeth and are used to transmit power between intersecting shafts.

• Worm gears consist of a worm and a wor...read more

My favorite subject is mechanical engineering, as it combines creativity with technical skills to solve real-world problems.

• Mechanical engineering principles help in designing efficient systems, like HVAC for buildings.

• I enjoy learning about thermodynamics, which is crucial for understanding energy systems.

• Hands-on projects, such as building a small engine, enhance my practical skills and understanding.

• Studying materia...read more

Pumps are selected based on the required flow rate, head, and fluid properties.

• Determine the required flow rate and head for the application

• Consider the fluid properties such as viscosity, temperature, and corrosiveness

• Select a pump type that is suitable for the application, such as centrifugal, positive displacement, or axial flow

• Choose a pump material that is compatible with the fluid being pumped

• Consider the operati...read more

Boilers are classified based on their design, fuel type, and application.

• Fire-tube boilers

• Water-tube boilers

• Electric boilers

• Gas boilers

• Oil boilers

• Solid fuel boilers

• Combination boilers

• Condensing boilers

• Industrial boilers

• Residential boilers

Threads are helical ridges or grooves on the surface of a cylindrical object. There are different types of threads.

• Unified Thread Standard (UTS)

• Metric Thread Standard

• Pipe Thread Standard

• ACME Thread

• Buttress Thread

• Knuckle Thread

• Square Thread

• Round Thread

Valves are devices used to control the flow of fluids or gases. There are several types of valves used in different applications.

• Gate valve

• Ball valve

• Butterfly valve

• Globe valve

• Check valve

• Diaphragm valve

• Needle valve

• Pressure relief valve

• Safety valve

DCV stands for Directional Control Valve in hydraulics which controls the direction of fluid flow.

• DCV is used to control the direction of fluid flow in hydraulic systems.

• It is a type of valve that directs the flow of fluid to different parts of the system.

• DCV can be manually operated or automated depending on the application.

• Examples of DCV include spool valves, poppet valves, and rotary valves.

• DCV is an important comp...read more