10+ TrackDfect's Interview Questions and Answers

Common welding defects include porosity, undercutting, and lack of fusion. Acceptance criteria vary based on the type of defect.

• Porosity: voids or gas pockets in the weld. Acceptance criteria depend on the size and location of the porosity.

• Undercutting: groove in the base metal near the weld. Acceptance criteria depend on the depth and length of the undercut.

• Lack of fusion: incomplete bonding between the weld and base metal. Acceptance criteria depend on the size and location...read more

Hydrotest is a process of testing the strength and integrity of a pressure vessel or pipeline.

• Hydrotest involves filling the vessel or pipeline with water and pressurizing it to a specified level.

• The pressure is held for a specified duration to ensure there are no leaks or failures.

• Air volume calculation is used to determine the amount of air needed to pressurize the vessel or pipeline.

• The formula for air volume calculation is V = (P1 x V1) / P2, where V is the volume of air ...read more

The longest pipeline route in India is the 1,397 km long Mundra-Pathanamthitta pipeline. The longest pipeline in the world is the Druzhba pipeline.

• The Mundra-Pathanamthitta pipeline is used to transport crude oil from Gujarat to Kerala.

• The Druzhba pipeline is a network of pipelines that runs from Russia to several European countries.

• The Druzhba pipeline is approximately 4,000 km long.

• Other long pipelines in India include the Paradip-Haldia-Durgapur pipeline and the Salaya-Mat...read more

Seam pipe has a welded seam while seamless pipe is made without any seam. CGD uses seamless pipes for better safety and efficiency.

• Seam pipes have a welded seam while seamless pipes are made without any seam.

• Seam pipes are cheaper than seamless pipes.

• Seamless pipes are stronger and more reliable than seam pipes.

• CGD (City Gas Distribution) uses seamless pipes for better safety and efficiency.

• Seamless pipes are used in high-pressure applications such as oil and gas pipelines, p...read more

Various grades of steel pipe are used in CGD (City Gas Distribution).

• Different grades of steel pipe are used in CGD based on factors like pressure rating, temperature, and application requirements.

• Common grades of steel pipe used in CGD include API 5L Grade B, ASTM A106 Grade B, and ASTM A333 Grade 6.

• Higher grades of steel pipe may be used for high-pressure applications or in corrosive environments.

• The selection of steel pipe grades in CGD depends on factors like pipeline des...read more

The type of welding and electrode used depends on the specific application and materials being joined.

• Common types of welding include arc welding, MIG welding, TIG welding, and spot welding.

• The choice of welding method depends on factors such as the type of metal, thickness, and desired weld quality.

• For example, arc welding often uses electrodes made of materials like carbon steel, stainless steel, or cast iron.

• MIG welding typically uses a consumable electrode wire made of th...read more

A dead weight tester is a device used to calibrate pressure gauges by applying known weights to a piston.

• Consists of a piston-cylinder assembly and a set of calibrated weights

• Weights are placed on the piston to generate a known pressure

• Pressure generated is compared to the reading on the gauge being calibrated

• Used for high-precision calibration of pressure gauges

• Commonly used in industries such as oil and gas, aerospace, and manufacturing

WPS is Welding Procedure Specification, PQR is Procedure Qualification Record, WQT is Welder Qualification Test, EQT is Equipment Qualification Test.

• WPS is a document that outlines the welding process to be used for a specific job.

• PQR is a record of the welding parameters used during a test weld.

• WQT is a test that certifies a welder's ability to perform a specific type of welding.

• EQT is a test that certifies the equipment used for welding meets certain standards.

TCP is a protocol that provides reliable, ordered, and error-checked delivery of data between applications.

• TCP stands for Transmission Control Protocol.

• It is a connection-oriented protocol that operates at the transport layer of the OSI model.

• TCP provides reliable, ordered, and error-checked delivery of data between applications.

• It establishes a connection between two hosts and ensures that data is transmitted correctly and completely.

• TCP uses a three-way handshake to establi...read more

Dwell time in DPT refers to the amount of time the needle is left in the skin after injection.

• Dwell time is important for ensuring proper delivery of the vaccine.

• It is typically around 10 seconds for intradermal injections.

• For intramuscular injections, dwell time may vary depending on the specific vaccine and injection site.

• Proper training and technique are necessary to ensure accurate dwell time.

• Dwell time can affect the efficacy and safety of the vaccine.

E6010 is a type of electrode used in welding that produces deep penetration and is commonly used for welding in the vertical and overhead positions.

• E6010 is a classification of welding electrode according to the American Welding Society (AWS) system.

• It is a cellulose-based electrode that provides excellent arc stability and deep penetration.

• The 'E' in E6010 stands for electrode, while the '60' indicates the tensile strength of the weld metal in thousands of pounds per square ...read more