Diploma Engineer Interview Questions and Answers

MPI, Auto UT, Manual UT, and final inspection line are used for non-destructive testing in manufacturing.

• MPI (Magnetic Particle Inspection) uses magnetic fields and iron particles to detect surface and slightly subsurface defects in ferromagnetic materials.

• Auto UT (Ultrasonic Testing) uses high-frequency sound waves to detect internal defects in materials.

• Manual UT (Ultrasonic Testing) is similar to Auto UT but is performed manually by an operator.

• Final inspection line is whe...read more

Measuring instruments are tools used to measure physical quantities. Their least count is the smallest measurement that can be made.

• Common measuring instruments include rulers, calipers, micrometers, and thermometers.

• Least count is determined by the smallest division on the instrument's scale.

• For example, a ruler with a smallest division of 1 mm has a least count of 1 mm.

• A micrometer with a smallest division of 0.01 mm has a least count of 0.01 mm.

• Least count is important for...read more

There are 1000 microns in 1 mm. The least value of vernier is 0.01 mm.

• 1 mm is equal to 1000 microns.

• Micron is a unit of length equal to one millionth of a meter.

• Vernier is a measuring scale used in precision instruments.

• The least value of vernier is the smallest measurement that can be accurately read on the scale.

• In this case, the least value of vernier is 0.01 mm.

Foundation Fieldbus is a digital communication protocol used in industrial automation systems.

• It is a two-way communication system between field devices and control systems.

• It uses a single pair of wires to transmit data and power to devices.

• It allows for real-time control and monitoring of devices.

• It supports multiple devices on a single network.

• It is commonly used in process control industries such as oil and gas, chemical, and pharmaceuticals.

The laws of thermodynamics describe the behavior of energy in a system.

• First law: Energy cannot be created or destroyed, only transferred or converted.

• Second law: Entropy always increases in a closed system.

• Third law: As temperature approaches absolute zero, entropy approaches a minimum.

• Examples: car engine, refrigerator, power plant.