10+ Telliant Systems Interview Questions and Answers

The major difficulty faced during a centrifugal pump design was achieving optimal efficiency and performance.

• One major difficulty was selecting the right impeller design to ensure proper flow and pressure.

• Another challenge was balancing the pump components to minimize vibration and noise.

• Successful project: Designed a centrifugal pump for a chemical processing plant that exceeded performance expectations.

• Unsuccessful project: Faced issues with cavitation in a pump design for ...read more

Setting up a cavitation test simulation in CFD involves defining the fluid properties, boundary conditions, and meshing.

• Define the fluid properties such as density, viscosity, and vapor pressure.

• Set up appropriate boundary conditions to simulate the cavitation phenomenon.

• Generate a high-quality mesh to accurately capture the cavitation effects.

• Choose a suitable turbulence model to account for the turbulent flow behavior.

• Run the simulation and analyze the results to identify c...read more

The parameter monitored in a pumping station sump simulation is water level.

• Water level is monitored to ensure it stays within safe operating limits.

• Monitoring water level helps prevent overflow or equipment damage.

• Examples of monitoring methods include float switches, ultrasonic sensors, and pressure transducers.

I typically use the k-epsilon turbulence model for CFD of centrifugal pumps.

• I prefer the k-epsilon turbulence model due to its accuracy in predicting turbulent flow behavior.

• This model is widely used in industrial applications and is well-suited for simulating flow in centrifugal pumps.

• The k-epsilon model calculates turbulent kinetic energy (k) and its dissipation rate (epsilon) to model turbulence effects.

• Other common turbulence models include k-omega, SST k-omega, and Reyno...read more

To setup aero-acoustic simulation, one must first define the geometry, mesh the domain, set up boundary conditions, choose appropriate turbulence model, and select suitable solver settings.

• Define the geometry of the object or flow field being studied

• Mesh the domain to discretize the geometry into smaller elements

• Set up appropriate boundary conditions to mimic real-world scenarios

• Choose a suitable turbulence model to capture turbulent flow effects

• Select solver settings such as...read more

Four stroke and two stroke are types of internal combustion engines with different cycles of operation.

• Four stroke engines have four stages: intake, compression, power, and exhaust.

• Two stroke engines have only two stages: compression and power/exhaust.

• Four stroke engines are more fuel efficient and produce less pollution compared to two stroke engines.

• Examples: Four stroke - car engines, motorcycle engines. Two stroke - chainsaws, lawnmowers.

A petrol engine is an internal combustion engine that uses petrol as fuel to power a vehicle or machinery.

• Petrol engines ignite fuel using spark plugs

• They have higher power output compared to diesel engines

• Commonly used in cars, motorcycles, and small aircraft

• Examples include inline-four, V6, and V8 petrol engines

An IC engine, or internal combustion engine, is a type of engine that generates power by burning fuel inside the engine itself.

• IC engines are commonly used in vehicles such as cars, motorcycles, and trucks.

• They work by igniting fuel-air mixture inside a combustion chamber to produce mechanical energy.

• There are two main types of IC engines: gasoline engines and diesel engines.

• IC engines require regular maintenance and care to ensure optimal performance.

A carburettor is a device in an internal combustion engine that mixes air with a fine spray of liquid fuel.

• Carburettors are used in older vehicles to control the air-fuel mixture for combustion.

• They work by using the vacuum created by the engine to draw in air and fuel through different circuits.

• Common types include downdraft, sidedraft, and updraft carburettors.

• Carburettors have been largely replaced by fuel injection systems in modern vehicles.

A diesel engine is an internal combustion engine that uses diesel fuel to power the vehicle.

• Diesel engines ignite fuel using compression instead of spark plugs

• They are more fuel efficient than gasoline engines

• Commonly used in trucks, buses, and heavy machinery