Gilbarco Veeder Root Service Engineer Interview Questions and Answers for Freshers

API 682 OH VS BB refers to the two types of mechanical seals specified by API 682 standard for pumps in oil and gas industry.

• API 682 standard specifies two types of mechanical seals - OH (Outside Hung) and BB (Back to Back).

• OH seals have the seal faces mounted outside the seal chamber, while BB seals have the seal faces mounted back to back within the seal chamber.

• OH seals are typically used for clean fluids, while BB ...read more

Centrifugal pumps are used to transport fluids by converting rotational kinetic energy into hydrodynamic energy.

• Centrifugal pumps are classified based on the number of impellers they have, such as single-stage and multi-stage pumps.

• Other types include vertical, horizontal, submersible, and self-priming centrifugal pumps.

• Centrifugal pumps can also be categorized based on the design of the impeller, such as open, semi-op

A ball screw is a mechanical linear actuator that translates rotational motion to linear motion.

• Consists of a screw shaft with a ball nut that moves along the threads of the screw

• Ball bearings in the nut reduce friction and allow for smooth motion

• Used in various applications such as CNC machines, robotics, and aerospace industry

A spindle cross section is a diagram showing the internal structure of a spindle used in machinery.

• Spindle cross section typically shows the arrangement of bearings, shaft, and other components inside the spindle.

• It helps in understanding the functionality and design of the spindle.

• Examples of components shown in a spindle cross section include ball bearings, housing, and lubrication system.

Different types of bearings include ball bearings, roller bearings, and plain bearings, each with specific applications.

• Ball bearings are used in applications requiring low friction and high speed, such as in wheels and conveyor belts.

• Roller bearings are suitable for heavy radial loads, like in automotive transmissions and industrial machinery.

• Plain bearings, also known as bushings, are used in applications where lubri...read more

Roller bearings have cylindrical rollers while spherical bearings have spherical rollers for increased load capacity and misalignment compensation.

• Roller bearings have cylindrical rollers that distribute load evenly across a larger surface area

• Spherical bearings have spherical rollers that allow for misalignment compensation

• Roller bearings are more suitable for high radial loads while spherical bearings are better for ...read more