Central Coalfields Interview Questions and Answers

ICP-OES stands for Inductively Coupled Plasma - Optical Emission Spectroscopy, used for elemental analysis in various industries.

• ICP-OES is a technique used for elemental analysis in various industries such as environmental, pharmaceutical, and food testing.

• It works by ionizing the sample in an inductively coupled plasma and then measuring the emitted light at specific wavelengths.

• Troubleshooting of ICP-OES involves ch...read more

The type of titration refers to the method used to determine the concentration of a substance in a solution by reacting it with a known volume and concentration of another substance.

• There are different types of titrations such as acid-base titrations, redox titrations, and complexometric titrations.

• In acid-base titrations, the pH of the solution is monitored to determine the endpoint of the reaction.

• Redox titrations in...read more

FRL stands for Filter, Regulator, Lubricator and Enumati is not a recognized term in the maintenance field.

• FRL is a combination of components used in pneumatic systems to filter, regulate pressure, and lubricate the air supply.

• Examples of FRL components include air filters to remove contaminants, regulators to control pressure, and lubricators to add oil to the air.

• Enumati does not have a known meaning or usage in main

There are various types of bearings used in machinery, such as ball bearings, roller bearings, and plain bearings.

• Ball bearings use balls to reduce friction between two surfaces, commonly found in wheels and pulleys.

• Roller bearings use cylindrical rollers to reduce friction, commonly found in conveyor belts and gearboxes.

• Plain bearings have a simple design with a sliding surface, commonly found in hinges and bushings.

Fill offjob is a term used in maintenance to classify tasks that are completed outside of regular working hours.

• Fill offjob tasks are typically scheduled during weekends or holidays to minimize disruption to regular operations.

• Examples of fill offjob tasks include major equipment repairs, facility upgrades, and preventive maintenance activities.

• Maintenance fitters may be required to work on fill offjob tasks to ensure ...read more

The count of varniar calipat is not a standard term in the maintenance fitter field.

• There is no standard definition or reference for varniar calipat in maintenance fitting.

• It is possible that the term is specific to a certain company or industry, in which case the count would depend on their specific requirements.

• It would be best to ask for clarification on the term or context in which it is being used.

Calcification of fill refers to the accumulation of calcium deposits in a filling material.

• Calcification of fill can occur in dental fillings, causing them to harden and potentially crack over time.

• This process can also occur in industrial settings, such as in pipelines where calcium deposits build up and restrict flow.

• Preventative measures such as regular cleaning and maintenance can help reduce the risk of calcificat

The count of bore gauges refers to the number of bore gauges available for use in maintenance tasks.

• Check the inventory records for the number of bore gauges on hand

• Count the physical bore gauges in the maintenance department

• Consult with colleagues or supervisors to confirm the count

• Ensure all bore gauges are accounted for and in working condition

Substation use equipment refers to the various devices and tools used in a substation for power distribution and maintenance.

• Substation transformers

• Circuit breakers

• Disconnect switches

• Voltage regulators

• Capacitor banks

• Protective relays

Electricity is the flow of electric charge through a conductor.

• Electricity is the flow of electrons through a conductor

• It is a form of energy that powers electrical devices

• Electricity can be generated from various sources such as coal, wind, solar, and hydro

• It is measured in units of volts, amps, and watts

An induction motor is a type of AC motor that works on the principle of electromagnetic induction to convert electrical energy into mechanical energy.

• Induction motors are commonly used in various industrial applications due to their simplicity, reliability, and low cost.

• They consist of a stator (stationary part) and a rotor (rotating part) where the rotor is not connected to an external power source.

• When an alternating...read more

A generator is a device that converts mechanical energy into electrical energy. It functions by rotating a coil of wire within a magnetic field to produce electricity.

• Generates electricity by converting mechanical energy into electrical energy

• Consists of a coil of wire rotating within a magnetic field

• Used in power plants, backup generators, and portable generators

Transformers function to change voltage levels in electrical systems.

• Transformers increase or decrease voltage levels in electrical systems

• Step-up transformers increase voltage for long-distance transmission

• Step-down transformers decrease voltage for distribution to homes and businesses

• Transformers help maintain power quality and efficiency in electrical grids

I am applying for this job because of my passion for managing civil projects and my proven track record of successful project completions.

• Passion for managing civil projects

• Proven track record of successful project completions

• Excited about the opportunity to contribute to impactful infrastructure projects

I requested a salary hike due to increased responsibilities, achievements, and market value.

• Increased responsibilities in current role

• Achievements such as successful completion of projects or exceeding targets

• Market value based on industry standards and experience

• Cost of living increase or inflation affecting expenses

The various stages of construction of the foundation of a building include site preparation, excavation, foundation design, footing construction, and foundation pouring.

• Site preparation involves clearing the area and leveling the ground for construction.

• Excavation is the process of digging a hole in the ground to create space for the foundation.

• Foundation design is crucial to ensure the building's stability and load-be...read more

The design mix for concrete is the proportion of various ingredients like cement, sand, aggregates, and water to achieve the desired strength and durability.

• Design mix is determined based on the required strength and durability of the concrete

• It involves selecting the right proportions of cement, sand, aggregates, and water

• Various factors like type of construction, exposure conditions, and desired workability influence...read more