40+ GAIN Credit Interview Questions and Answers

Amendment bill is a change or addition to an existing bill, while supply and adjust bill is a bill that authorizes the government to spend money.

• Amendment bill involves making changes or additions to an existing bill, while supply and adjust bill authorizes government spending.

• Amendment bill typically revises specific provisions of a bill, while supply and adjust bill deals with budget allocations.

• Basic parameters to check for amendment bill include changes made, impact on ex...read more

Main causes of communication failure in DCS include network issues, hardware failures, software glitches, and human error.

• Network issues such as poor connectivity or network congestion can lead to communication failure.

• Hardware failures like malfunctioning cables, routers, or switches can disrupt communication.

• Software glitches in the DCS system can cause communication breakdowns.

• Human error, such as incorrect configuration settings or improper maintenance, can also result in...read more

Copper (Cu) conductor will take larger current than Aluminum (Al) conductor of the same size.

• Copper has a higher electrical conductivity than Aluminum.

• Copper has a lower resistivity than Aluminum.

• Copper has better thermal conductivity than Aluminum.

• Copper is more commonly used in high-current applications.

• Aluminum is often used in overhead power transmission lines due to its lighter weight.

Proprietary indent is for specific brand products while single tender indent is for any brand products.

• Proprietary indent is used when a specific brand or product is required for a project.

• Single tender indent allows for multiple brands or products to be considered for the project.

• Proprietary indent may limit competition and increase costs, while single tender indent promotes competition and potentially lowers costs.

• Examples: Proprietary indent for Apple laptops vs single ten...read more

Electrostatic Tar Precipitator uses electrostatic forces to remove tar particles from gas streams.

• Uses high voltage to ionize gas particles

• Charged particles are attracted to oppositely charged plates

• Tar particles stick to plates and are removed

• Commonly used in industrial applications like power plants and refineries

To reduce deformation in a beam hinged on both ends with a load applied in between, additional measures can be taken.

• Increase the beam's cross-sectional area to improve stiffness

• Use materials with higher modulus of elasticity

• Add support columns or braces to reduce bending

• Distribute the load more evenly along the beam

• Reduce the span length of the beam for better support

HV transmission lines are not grounded to prevent unwanted current flow and ensure safety.

• HV transmission lines operate at high voltages, typically above 69 kV, to efficiently transmit electricity over long distances.

• Grounding HV transmission lines can lead to unwanted current flow, power losses, and safety hazards.

• Insulation and proper design of HV transmission lines help prevent electrical faults and ensure reliable power transmission.

• Grounding is done at substations and no...read more

I have not worked with batteries before.

• I have not worked with batteries before.

• I do not have any experience or knowledge about different types of batteries.

• I am willing to learn and adapt to new technologies and products.

Various types of conductors are used in transmission lines depending on the application.

• Aluminum conductors are commonly used due to their lightweight and low cost.

• Copper conductors are used in high voltage and high current applications.

• ACSR (Aluminum Conductor Steel Reinforced) conductors are used for long distance transmission lines.

• High-temperature conductors like AAAC (All Aluminum Alloy Conductors) are used in areas with high temperatures.

• Optical fiber conductors are use...read more

The power plug earth wire is bigger in size to ensure safety and prevent electrical shocks.

• The earth wire provides a path for the current to flow in case of a fault or short circuit.

• A larger wire size reduces resistance and allows for the safe dissipation of excess current.

• It helps to protect individuals and equipment from electric shock hazards.

• The earth wire is connected to the ground, which acts as a reference point for electrical potential.

• Examples of larger earth wire si...read more

The mud circulation system is used in drilling operations to circulate drilling mud, which helps to cool and lubricate the drill bit and carry cuttings to the surface.

• Mud is pumped down the drill pipe and out through the bit, then back up to the surface through the annulus between the drill pipe and the wellbore.

• Mud density is important for maintaining pressure in the wellbore and preventing blowouts.

• Other factors that affect mud density include temperature, salinity, and the...read more

VFD controls motor speed by varying frequency, while soft starter reduces voltage during motor start to limit current.

• VFD adjusts motor speed by changing frequency of input power

• Soft starter limits current during motor start by reducing voltage

• VFD provides precise control over motor speed and torque

• Soft starter is simpler and cheaper option for reducing motor start-up current

• VFD is more energy efficient compared to soft starter

Motor bearings can be damaged due to various reasons such as lack of lubrication, contamination, overloading, misalignment, or improper installation.

• Lack of lubrication can cause increased friction and heat, leading to bearing failure.

• Contamination from dirt, dust, or moisture can accelerate wear and tear on the bearings.

• Overloading the motor can put excessive stress on the bearings, causing them to fail prematurely.

• Misalignment of the motor shaft can cause uneven pressure on...read more

Earthing is the process of connecting the non-current carrying part of electrical equipment to the earth, while grounding is the process of connecting the current carrying part of electrical equipment to the earth.

• Earthing is used to protect against electrical shock by providing a path for fault currents to flow safely into the ground.

• Grounding is used to ensure proper functioning of electrical systems by providing a reference point for voltage levels.

• Earthing is typically do...read more

Interlocks used in my working area include safety gates, emergency stop buttons, and lockout/tagout procedures.

• Safety gates prevent access to hazardous areas while machinery is in operation.

• Emergency stop buttons immediately shut down machinery in case of an emergency.

• Lockout/tagout procedures ensure that machinery is properly shut down and cannot be restarted until maintenance or repairs are complete.

• Interlocks are regularly inspected and tested to ensure they are functionin...read more

Disputes can be resolved through negotiation, mediation, arbitration or litigation.

• Negotiation involves discussion and compromise to reach a mutually acceptable solution.

• Mediation involves a neutral third party who helps the parties reach a settlement.

• Arbitration involves a neutral third party who makes a binding decision after hearing both sides.

• Litigation involves taking the dispute to court and having a judge or jury make a decision.

• The best approach depends on the nature ...read more

Pulse width modulation (PWM) is a technique used in VFD to control the speed of the motor by adjusting the width of the pulses of voltage supplied to the motor.

• PWM is a method of controlling the amount of power delivered to a load without changing the voltage level.

• In VFD, PWM is used to control the speed of the motor by varying the width of the pulses of voltage supplied to the motor.

• The width of the pulses is controlled by a microprocessor that adjusts the frequency of the ...read more

SF6 gas is used in GIS due to its excellent insulating properties and high dielectric strength.

• SF6 gas has high dielectric strength, making it an excellent insulator for high voltage equipment like GIS

• SF6 gas is non-toxic, non-flammable, and chemically stable, making it a safe choice for GIS

• SF6 gas has a high global warming potential, but its use in GIS is tightly regulated to minimize emissions

• Other gases like nitrogen and air can be used in GIS, but they have lower dielectr...read more

Internal combustion engines burn fuel inside the engine while external combustion engines burn fuel outside the engine.

• Internal combustion engines are commonly used in cars, motorcycles, and airplanes.

• External combustion engines are less common and include steam engines and Stirling engines.

• Internal combustion engines are more efficient and powerful than external combustion engines.

• External combustion engines are typically quieter and produce less pollution than internal comb...read more

Synchronous motors rotate at a fixed speed while slipring induction motors have variable speed.

• Synchronous motors have a constant speed and require an external power source to start

• Slipring induction motors have a variable speed and can start on their own

• Synchronous motors are used in applications where constant speed is required, such as in clocks and timers

• Slipring induction motors are used in applications where variable speed is required, such as in conveyor belts and elev...read more

Back EMF is directly proportional to speed and number of poles in a DC motor.

• Back EMF is generated in the opposite direction to the applied voltage.

• As the motor speeds up, the back EMF increases.

• The number of poles in the motor determines the frequency of the back EMF.

• More poles result in a higher frequency and a smoother rotation.

• Back EMF is used to control the speed of the motor.

Speed, frequency and number of poles are interrelated in a 3-phase induction motor.

• The speed of the motor is directly proportional to the frequency of the power supply.

• The number of poles in the motor determines the speed at which it operates.

• For a given frequency, the speed of the motor decreases as the number of poles increases.

• For a given number of poles, the speed of the motor increases as the frequency of the power supply increases.

Slipring and squirrel cage induction motors differ in their rotor construction and starting torque.

• Slipring motor has a wound rotor with slip rings and brushes while squirrel cage motor has a simple rotor with bars and end rings.

• Slipring motor has high starting torque and can be used for heavy loads while squirrel cage motor has low starting torque and is suitable for light loads.

• Slipring motor can be controlled by varying the resistance in the rotor circuit while squirrel ca...read more

Routes for making steel include the blast furnace route and the electric arc furnace route.

• Blast furnace route involves the use of iron ore, coke, and limestone to produce steel.

• Electric arc furnace route involves melting scrap steel in an electric arc furnace to produce new steel.

• Other routes include the direct reduced iron (DRI) route and the smelting reduction route.

• Each route has its own advantages and disadvantages in terms of cost, energy consumption, and environmental ...read more

Yes, I play video games in my free time.

• I enjoy playing action-adventure games like Assassin's Creed and Uncharted.

• I also like playing sports games like FIFA and NBA 2K.

• Sometimes I play puzzle games like Tetris or Candy Crush.

• Playing video games helps me relax and unwind after a long day.

Young's modulus of elasticity is a measure of a material's stiffness and ability to withstand deformation under stress.

• Young's modulus is a material property that describes the ratio of stress to strain in a material.

• It is denoted by the symbol E and has units of pressure (Pascal or psi).

• Higher Young's modulus indicates a stiffer material, while lower values indicate more flexibility.

• For example, steel has a high Young's modulus, making it stiff and strong, while rubber has a...read more

DC motor works on the principle of Lorentz force.

• DC motor converts electrical energy into mechanical energy.

• It consists of a rotor and a stator.

• When current flows through the coil, it produces a magnetic field.

• The magnetic field interacts with the magnetic field of the permanent magnet, producing a torque that rotates the rotor.

• The direction of rotation can be reversed by reversing the direction of current flow.

A monopulley is a type of pulley system with a single sheave or wheel.

• Monopulley is a simple machine that changes the direction of force applied to a load.

• It consists of a single sheave or wheel that rotates around a fixed axis.

• It is commonly used in lifting heavy loads and in mechanical advantage systems.

• Examples of monopulley include flagpole pulleys, clothesline pulleys, and window blind pulleys.

I am not privy to the financial growth of my employer.

• I am not involved in the financial aspects of the company.

• I focus on ensuring quality in the products and processes.

• However, I believe that financial growth is important for any organization to sustain and grow.

• It is important to have a strong financial foundation to invest in research and development, training, and infrastructure.

• This can lead to better products, improved processes, and ultimately, increased revenue and p...read more

A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron.

• Used for smelting industrial metals

• Commonly used for producing iron

• Involves the combustion of fuel and the introduction of ore, air, and limestone

Commutator is a device used in electric motors to convert AC to DC.

• It consists of a set of copper segments attached to the rotor of the motor.

• It helps in reversing the direction of current flow in the armature winding.

• It ensures that the torque produced by the motor is unidirectional.

• Examples include DC motors, generators, and some types of welding machines.

The growth of income is dependent on various factors such as education, experience, industry, and location.

• Education plays a crucial role in determining income growth.

• Experience is another important factor that affects income growth.

• The industry in which one works also impacts income growth.

• Location can also play a significant role in determining income growth.

• Networking and building relationships can lead to better job opportunities and higher income.

• Continuing education and...read more

Types of gears include spur gears, helical gears, bevel gears, worm gears, and rack and pinion gears.

• Spur gears have straight teeth and are the most common type of gear.

• Helical gears have angled teeth for smoother and quieter operation.

• Bevel gears have cone-shaped teeth and are used to change the direction of rotation.

• Worm gears have a screw-like appearance and provide high gear reduction ratios.

• Rack and pinion gears convert rotational motion into linear motion.

Fleming's left-hand rule states that the direction of motion of a DC motor is perpendicular to both the magnetic field and the direction of current flow.

• Fleming's left-hand rule is used to determine the direction of motion of a DC motor.

• The rule states that the direction of motion is perpendicular to both the magnetic field and the direction of current flow.

• The thumb represents the direction of motion, the first finger represents the magnetic field, and the second finger repr...read more

AutoCAD is a computer-aided design software used for creating 2D and 3D drawings, while SofiCAD is a plugin for AutoCAD specifically designed for civil engineering tasks.

• AutoCAD is a widely used CAD software for creating precise 2D and 3D drawings in various industries.

• SofiCAD is a plugin for AutoCAD that provides additional tools and features specifically tailored for civil engineering tasks such as designing roads, pipelines, and structures.

• Both AutoCAD and SofiCAD are esse...read more

Gratuity is calculated based on an employee's length of service and last drawn salary.

• Gratuity is a lump sum amount paid to an employee as a token of appreciation for their service.

• The calculation of gratuity depends on the number of years an employee has worked for an organization.

• In India, gratuity is calculated using the formula: (Last drawn salary × 15 × number of years of service) / 26.

• The number of years of service is rounded off to the nearest whole number.

• The maximum ...read more