Barbrik Project Limited (PRA Group) Assistant Engineer Mechanical Interview Questions and Answers

The mechanism refers to the physical or mechanical system that performs a specific function or task.

• Mechanisms are often made up of various components such as gears, levers, pulleys, and linkages.

• They are designed to convert input forces and motion into desired output forces and motion.

• Examples include a car engine, a door lock, a bicycle chain, and a robotic arm.

An assembly is a collection of parts or components put together to form a complete structure or machine.

• An assembly typically consists of multiple parts or components that are designed to fit together in a specific way.

• Each part in an assembly has a specific function and contributes to the overall functionality of the structure.

• Assemblies can range from simple structures like a chair to complex machines like a car or a...read more

DOC stands for Diesel Oxidation Catalyst, a device used to reduce harmful emissions in diesel engines. Mufflers are components that reduce noise produced by the engine.

• DOC is a device used in diesel engines to convert harmful pollutants into less harmful substances.

• Mufflers are components in the exhaust system that reduce noise produced by the engine.

• DOCs are commonly used in vehicles to meet emission standards.

• Muffler...read more

Starting & presser pipe is a term used in mechanical engineering to refer to pipes used for starting and pressurizing systems.

• Starting pipe is used to supply initial fluid or gas to start a system

• Presser pipe is used to maintain pressure in a system

• Examples include starting and presser pipes in hydraulic systems or pneumatic systems

Specification of machinery refers to the detailed requirements and characteristics of a machine or equipment.

• Includes dimensions, materials, performance criteria, and safety features

• Should be clearly defined to ensure proper design and functionality

• Examples: maximum load capacity, operating temperature range, power consumption

First angle projection is a method of creating engineering drawings where the object is projected onto a plane in front of it.

• In first angle projection, the object is placed in the first quadrant of the viewing plane.

• The object is projected onto the plane from the perspective of the object looking towards the plane.

• Commonly used in Europe and Asia, while third angle projection is more common in the United States.

• Helps ...read more

The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted.

• Energy can be transferred between systems or converted from one form to another.

• The total energy in a closed system remains constant.

• Mathematically expressed as: ΔU = Q - W, where ΔU is the change in internal energy, Q is heat added to the system, and W is work done by the system.

• Example: When a gas is compr...read more

Entropy is a measure of disorder or randomness in a system.

• Entropy is a thermodynamic property that increases with the amount of disorder in a system.

• It is a measure of the unavailable energy in a closed thermodynamic system that is also usually considered to be a measure of the system's disorder.

• Entropy can be thought of as a measure of the number of specific ways in which a system may be arranged, often interpreted a...read more

Yes, I have experience in batching plant erection for 3 years.

• I have worked on the erection of batching plants for 3 years

• I am familiar with the process of setting up and installing batching plants

• I have experience in troubleshooting and maintenance of batching plants

• I have knowledge of the safety protocols and regulations related to batching plant erection

Types of air conditioning include central air conditioning, window units, split systems, and portable units.

• Central air conditioning: cools the entire house through ducts and vents

• Window units: installed in windows and cool a single room

• Split systems: have components both inside and outside the home

• Portable units: can be moved from room to room and do not require installation