Anjan Drug Graduate Engineer Trainee (Get) Interview Questions and Answers

SF6 gas is used in circuit breakers due to its excellent electrical insulation properties and high dielectric strength.

• SF6 gas has high dielectric strength, making it an effective insulator in high voltage applications.

• It has excellent arc-quenching properties, allowing it to quickly extinguish electrical arcs.

• SF6 gas is chemically stable and non-toxic, making it safe for use in circuit breakers.

• It has a high thermal c...read more

Substations use various protections to ensure safety and reliability of power supply.

• Overcurrent protection

• Ground fault protection

• Transformer protection

• Surge protection

• Circuit breaker

• Relay protection

• Isolation switches

• Lightning arresters

• Fire protection

• Security measures

Pumps and boilers are essential equipment in various industries. Pumps are used to transfer fluids, while boilers generate steam.

• Pumps are devices that move fluids by mechanical action.

• There are different types of pumps, such as centrifugal pumps, reciprocating pumps, and rotary pumps.

• Centrifugal pumps are commonly used in water supply systems and HVAC applications.

• Reciprocating pumps are used in high-pressure applicat...read more

AHU stands for Air Handling Unit. It is a device used to regulate and circulate air as part of a heating, ventilation, and air conditioning (HVAC) system.

• AHU is responsible for conditioning and distributing air within a building.

• It consists of components like fans, filters, heating and cooling coils, dampers, and controls.

• The fans in AHU draw in outside air, filter it, and then distribute it to various areas of the bui...read more

There are several types of boilers used in various industries and applications.

• There are four main types of boilers: fire-tube, water-tube, electric, and biomass.

• Fire-tube boilers are commonly used in steam locomotives and industrial plants.

• Water-tube boilers are used in power stations and large industrial settings.

• Electric boilers are used for heating purposes in residential and commercial buildings.

• Biomass boilers us...read more

Pneumatic systems use compressed air to transmit power, while hydraulic systems use fluid to transmit power.

• Pneumatic systems use air as the working fluid, while hydraulic systems use liquid.

• Pneumatic systems are typically used for lighter loads and faster movements, while hydraulic systems are used for heavier loads and slower movements.

• Pneumatic systems are generally less expensive and easier to maintain compared to ...read more

There are several types of welding techniques used in various industries.

• Arc welding: Uses an electric arc to create heat and join metals.

• MIG welding: Uses a consumable wire electrode and shielding gas to join metals.

• TIG welding: Uses a non-consumable tungsten electrode and inert gas to join metals.

• Spot welding: Joins metal sheets by applying pressure and heat at specific points.

• Flux-cored arc welding: Similar to MIG w...read more

CNC and lathe machines are used for precision cutting and shaping of materials.

• CNC machines use computer programming to control the cutting tools, allowing for highly precise and complex shapes to be created.

• Lathe machines are used for turning and shaping cylindrical objects, such as metal rods or wooden dowels.

• Both machines are commonly used in manufacturing and engineering industries.

• Examples of products made using C...read more