10+ Indo Thai Airport Management Services Interview Questions and Answers

Common alarms associated with Variable Frequency Drives (VFD) include overvoltage, undervoltage, overcurrent, overtemperature, and ground fault.

• Overvoltage alarm: occurs when the voltage supplied to the VFD exceeds the specified limit.

• Undervoltage alarm: triggered when the voltage supplied to the VFD falls below the specified limit.

• Overcurrent alarm: indicates that the current drawn by the VFD exceeds the rated value.

• Overtemperature alarm: alerts when the temperature of the V...read more

Common alarms associated with a VMC include tool wear, tool breakage, spindle overload, and coolant level.

• Tool wear alarm indicates the need to replace the cutting tool due to wear and tear.

• Tool breakage alarm alerts when a cutting tool breaks during machining.

• Spindle overload alarm warns of excessive load on the spindle, which can lead to damage.

• Coolant level alarm signals when the coolant level in the machine is low, affecting machining performance.

Common alarms encountered with CNC machines include overtravel alarms, spindle alarms, and tool change alarms.

• Overtravel alarms occur when the machine reaches its physical limits and tries to move further

• Spindle alarms can be triggered by issues such as overheating or excessive vibration

• Tool change alarms may indicate problems with the tool holder or tool changer mechanism

Diesel Generator (DG) sets are backup power sources commonly used in industries and commercial buildings.

• DG sets consist of a diesel engine and an electric generator to produce electricity.

• They are used as backup power sources in case of grid power failure.

• DG sets are commonly used in industries, hospitals, data centers, and commercial buildings.

• They require regular maintenance and fuel supply to ensure proper functioning.

• DG sets come in various sizes and capacities to meet d...read more

Sample locations in a carburizing furnace are crucial for accurate analysis of the process.

• Sample locations should be evenly distributed throughout the furnace to ensure representative results.

• Consider placing samples at different heights and distances from the heat source to account for temperature variations.

• Samples should be placed in areas where carburization is expected to be most effective, such as near the carbon potential control system.

• Avoid placing samples in areas ...read more

Fine pearlite and getrite have different effects on the properties of steel.

• Fine pearlite increases strength and hardness of steel due to its fine structure.

• Getrite improves toughness and ductility of steel by reducing the amount of pearlite present.

• Fine pearlite is formed by rapid cooling, while getrite is formed by slow cooling.

• The combination of fine pearlite and getrite can result in a balanced mix of strength, toughness, and ductility in steel.

• The ratio of fine pearlite ...read more

Steel grading system categorizes steel based on its chemical composition, physical properties, and intended use.

• Steel grades are typically classified by a numbering system such as AISI, ASTM, or SAE.

• Grades indicate the carbon content, strength, and other alloying elements present in the steel.

• Examples include AISI 304 stainless steel, ASTM A36 structural steel, and SAE 4140 alloy steel.

The structure after forging is typically more refined and denser compared to the original material.

• Forging process rearranges the internal grain structure of the material

• Grain boundaries become more uniform and aligned

• Increases in strength and toughness can be observed

• Reduction in porosity and defects

• Examples: Steel forged into a crankshaft, aluminum forged into aircraft components

PPC department plays a crucial role in driving targeted traffic and generating revenue for industries through paid advertising.

• PPC department manages and optimizes paid advertising campaigns on various platforms like Google Ads, Facebook Ads, etc.

• They conduct keyword research, create ad copies, and set bids to ensure maximum ROI.

• PPC department also tracks and analyzes campaign performance to make data-driven decisions for better results.

• They work closely with other department...read more

Lead variation in gears can be controlled by ensuring proper manufacturing processes and quality control measures.

• Use high precision machining techniques to ensure accurate dimensions of gears

• Implement strict quality control measures during production to detect and correct any variations

• Regularly calibrate and maintain production equipment to ensure consistency in gear manufacturing

• Utilize advanced technology such as CNC machines for precise gear cutting

• Monitor and analyze da...read more