10+ Visa Interview Questions and Answers

Backlash is the amount of clearance or play between mating gear teeth.

• Backlash is necessary to prevent binding and allow for lubrication in gear systems.

• It is measured by calculating the difference in tooth thickness between the gears when they are meshed.

• Backlash can be adjusted by changing the distance between the gears or by using shims.

• Excessive backlash can lead to noise, vibration, and reduced efficiency in gear systems.

Gearbox endoscopy inspection tools are used to visually inspect the internal components of a gearbox.

• Gearbox endoscopy tools typically consist of a flexible fiber optic scope with a camera at the end, allowing technicians to see inside the gearbox without disassembly.

• These tools are used to identify wear, damage, or other issues within the gearbox that may not be visible from the outside.

• Endoscopy inspections can help prevent costly breakdowns by detecting problems early and ...read more

Gears are mechanical components used to transmit motion and power between rotating shafts. Gearboxes are used to change the speed and torque of the output shaft.

• Gears come in various types such as spur, helical, bevel, and worm gears.

• Spur gears are used for high-speed applications, helical gears for high-load applications, bevel gears for changing the direction of rotation, and worm gears for high reduction ratios.

• Gearboxes are used to increase or decrease the speed of the ou...read more

Oil cooling system in Gearbox helps maintain optimal temperature for lubrication and prevents overheating.

• Oil cooler is typically a heat exchanger that uses air or water to cool the oil circulating in the gearbox.

• Cooling fins or tubes are used to increase surface area for better heat dissipation.

• Thermostatic valves control the flow of oil to the cooler based on temperature.

• Cooling fans may be used to enhance air cooling in some gearbox systems.

Vibration is the back and forth movement of an object, while frequency is the number of times this movement occurs per second.

• Vibration is a mechanical phenomenon where an object oscillates about a reference point.

• Frequency is the rate at which vibrations occur, measured in Hertz (Hz).

• Higher frequency vibrations can indicate issues like misalignment or imbalance in machinery.

• Vibration analysis is used in predictive maintenance to detect potential equipment failures.

• Examples o...read more

Breather unit allows for the exchange of air and prevents the buildup of pressure or vacuum inside the gearbox.

• Prevents contamination by keeping out dust, dirt, and moisture

• Helps regulate pressure inside the gearbox

• Allows for thermal expansion and contraction of the lubricant

• Commonly includes a filter to trap particles and prevent them from entering the gearbox

The payment process procedure involves steps to ensure timely and accurate payments to vendors and employees.

• Verify invoices for accuracy and approval

• Process payments through approved methods (check, wire transfer, etc.)

• Maintain records of payments and reconcile accounts

• Ensure compliance with company policies and regulations

• Regularly review and update payment processes for efficiency

• Example: Vendor invoices are received and matched with purchase orders before payment is proce...read more

Strain refers to the deformation or change in shape of a material due to an applied force.

• Strain is a measure of how much a material is stretched or compressed.

• It is calculated as the change in length divided by the original length.

• In machining, strain can affect the accuracy of the finished product.

• Proper lubrication and maintenance can help reduce strain on the machine.

• Examples of strain include bending a metal rod or stretching a rubber band.

Gearboxes are used in wind turbine generators to increase the rotational speed of the low-speed shaft to the high-speed shaft.

• Gearboxes in wind turbine generators (WTGs) are used to increase the rotational speed of the low-speed shaft to the high-speed shaft.

• They help optimize the efficiency of the turbine by allowing it to operate at its most efficient speed range.

• Gearboxes also help protect the generator from damage by controlling the speed of the rotor.

• Regular maintenance ...read more