Tata Steel Downstream Products Electrician Interview Questions and Answers

Various methods exist to measure motor RPM, including tachometers, frequency counters, and optical sensors.

• Tachometer: A device that directly measures the rotational speed of the motor shaft.

• Frequency Counter: Measures the frequency of the motor's output signal, which can be converted to RPM.

• Optical Sensor: Uses light beams to detect the rotation of a marked disk attached to the motor.

• Stroboscope: A flashing light that...read more

Safety devices in conveyor systems prevent accidents and ensure smooth operation, protecting both workers and equipment.

• Emergency Stop Buttons: Allow immediate shutdown of the conveyor in case of an emergency.

• Safety Guards: Physical barriers that prevent access to moving parts, reducing the risk of injury.

• Photoelectric Sensors: Detect objects or personnel in the conveyor's path, stopping operation if necessary.

• Overload...read more

The negative charge of an ESP system electrode helps in attracting and collecting particulate matter from flue gases.

• Electrostatic Precipitators (ESPs) use negatively charged electrodes to ionize particles in the gas stream.

• The negative charge creates an electric field that attracts positively charged particles, aiding in their collection.

• For example, in power plants, ESPs remove ash and other pollutants from exhaust g...read more

Healthy silica gel is typically blue or orange, while unhealthy silica gel turns pink or green, indicating moisture absorption.

• Healthy silica gel is often blue or orange, indicating it is dry.

• Unhealthy silica gel turns pink or green when it absorbs moisture.

• Blue silica gel contains cobalt chloride, which changes color when wet.

• Orange silica gel is a safer alternative that changes from orange to green when saturated.

Ohm's Law states that the voltage (V) in a circuit is equal to the current (I) multiplied by the resistance (R).

• V = I * R

• Voltage is measured in volts (V)

• Current is measured in amperes (A)

• Resistance is measured in ohms (Ω)

• Example: If a circuit has a current of 2A flowing through a resistance of 5Ω, the voltage would be 10V (2A * 5Ω = 10V)

Loco car & charging car axle change in breakdowns involves replacing damaged axles to ensure proper functioning of the vehicles.

• Loco car axle change is necessary when the axle is damaged due to wear and tear or accidents.

• Charging car axle change is required to maintain the stability and safety of the vehicle.

• Proper maintenance and regular inspections can help prevent breakdowns related to axle issues.

• Examples: Replacin...read more