Fanar Al Khaleej Mechanical Technician Interview Questions and Answers

CNC stands for Computer Numerical Control and is used for automated machining processes, while SPM stands for Special Purpose Machine and is designed for specific tasks.

• CNC machines are versatile and can be programmed to perform a variety of tasks, while SPM machines are designed for a specific task or operation.

• CNC machines are commonly used in industries like automotive, aerospace, and manufacturing, while SPM machin...read more

Hydraulics is a branch of science and engineering that deals with the mechanical properties of liquids, particularly water and oil, and their applications in various systems.

• Hydraulics involves the study of fluid mechanics, fluid properties, and the behavior of liquids under pressure.

• It is commonly used in hydraulic systems such as hydraulic brakes in vehicles, hydraulic lifts, and hydraulic cranes.

• Hydraulic systems wo...read more

The code of steel used in plants is typically specified by the American Society for Testing and Materials (ASTM).

• Steel used in plants is often specified by ASTM standards.

• Common codes for steel used in plants include ASTM A36, ASTM A572, and ASTM A516.

• The specific code of steel used in a plant will depend on factors such as the type of plant, the structural requirements, and the environmental conditions.

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.

• Compressors are commonly used in refrigeration, air conditioning, and gas turbines.

• They work by taking in a gas at a low pressure and volume, and then reducing the volume to increase the pressure.

• This process is achieved through the use of pistons, vanes, or rotating impellers.

• The compressed gas is then released at a higher

A roots blower is a type of positive displacement pump that operates by pumping fluid between a pair of meshing lobes.

• Consists of two counter-rotating lobes that trap and move fluid through the blower

• Fluid is pushed from the inlet to the outlet without compression

• Commonly used in applications such as wastewater treatment, pneumatic conveying, and vacuum systems

Truss, lever, and pulley are mechanical components commonly used in engineering for structural support and mechanical advantage.

• Truss is a framework of beams used to support a structure, often in the form of triangles for stability.

• Lever is a simple machine consisting of a rigid bar that pivots around a fixed point to amplify force.

• Pulley is a wheel with a groove used to change the direction of a force, allowing for ea...read more

Diesel has higher energy density than petrol, resulting in better fuel efficiency.

• Diesel has a higher energy density than petrol, meaning it can provide more energy per unit volume.

• Petrol is more volatile and burns faster than diesel.

• The capacity of diesel and petrol tanks in vehicles can vary depending on the size of the vehicle and its fuel efficiency.

• For example, a typical car may have a petrol tank capacity of arou...read more

Petrol engines use spark ignition, while diesel engines use compression ignition.

• Petrol engines use a spark plug to ignite the fuel-air mixture, while diesel engines rely on compression to ignite the fuel.

• Petrol engines are lighter and more responsive, while diesel engines are more fuel-efficient and have higher torque.

• Petrol engines are more common in cars and motorcycles, while diesel engines are often used in trucks

LNTD stands for Logarithmic Mean Temperature Difference.

• LNTD is a term used in heat transfer calculations to determine the overall temperature difference between two fluids in a heat exchanger.

• It is calculated using the formula LNTD = (ΔT1 - ΔT2) / ln(ΔT1 / ΔT2), where ΔT1 and ΔT2 are the temperature differences at the two ends of the heat exchanger.

• LNTD is important in designing efficient heat exchangers to maximize h...read more