Jindal Power Junior Engineer Interview Questions and Answers

Refractories are materials that can withstand high temperatures and are used in furnaces, kilns, and other high-temperature applications.

• Refractories are made from materials such as clay, silica, alumina, and magnesia.

• They are used to line furnaces, kilns, and other high-temperature equipment to protect them from heat and corrosion.

• Refractories are classified based on their chemical composition, physical properties, an...read more

There are three types of refractories: acidic, basic, and neutral.

• Refractories are materials that can withstand high temperatures and are used in furnaces, kilns, and other high-temperature applications.

• Acidic refractories are made of materials like silica and alumina and are used in acidic environments.

• Basic refractories are made of materials like magnesia and dolomite and are used in basic environments.

• Neutral refrac...read more

Turbine generator work involves converting mechanical energy into electrical energy using steam or water.

• Turbine generators use steam or water to rotate a turbine connected to a generator

• The rotating turbine spins magnets inside the generator, creating an electric current

• The electric current is then transmitted through power lines for use in homes and industries

Causes of hot bearings include lack of lubrication, overloading, misalignment, and contamination.

• Lack of lubrication: Insufficient or degraded lubricant can cause increased friction and heat.

• Overloading: Excessive load on the bearing can lead to overheating.

• Misalignment: Improper alignment of the bearing can cause it to operate under stress and generate heat.

• Contamination: Foreign particles or debris in the bearing can

Over-heating of Commutator in a DC motor can be caused by factors like excessive current, poor ventilation, dirty environment, and worn-out brushes.

• Excessive current flowing through the motor can cause the commutator to overheat.

• Poor ventilation around the motor can lead to inadequate cooling, resulting in overheating.

• A dirty environment can cause dust and debris to accumulate on the commutator, hindering heat dissipat...read more

The shunt motor will run at dangerously high speeds and may get damaged.

• The motor will run at its no-load speed, which is much higher than its rated speed.

• This can lead to overheating and mechanical stress on the motor components.

• The motor may get damaged or fail prematurely if directly connected to the supply line.

Density of slurry is the mass of the slurry per unit volume.

• Density of slurry is typically measured in kg/m^3 or lb/ft^3.

• It is calculated by dividing the mass of the slurry by its volume.

• The density of slurry can vary depending on the concentration of solids in the liquid.

• For example, a slurry with a high concentration of solids will have a higher density.

SPL stands for Sound Pressure Level and SEL stands for Sound Exposure Level.

• SPL is a measure of sound intensity relative to a reference level.

• SEL is a measure of sound exposure over a period of time, typically in decibels.

• Both SPL and SEL are commonly used in the field of acoustics and noise control.

The red area typically refers to a section or region that is highlighted or marked in the color red.

• Red area can indicate danger or warning.

• In engineering, red areas on diagrams or blueprints may signify areas of high risk or critical components.

• Examples: red area on a map indicating a fire hazard zone, red area on a circuit diagram highlighting a high voltage section.