Jindal Saw 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.

I am a certified electrician with a diploma in Electrical Engineering and 5 years of hands-on experience.

• Certified electrician

• Diploma in Electrical Engineering

• 5 years of hands-on experience

Ohm

• Unit of resistance in electrical circuits

• Symbol is Ω (omega)

• Named after German physicist Georg Simon Ohm

• Measured using an ohmmeter

The unit of current is Ampere (A)

• The unit of current is Ampere (A)

• Current is the flow of electric charge in a circuit

• 1 Ampere is equal to 1 Coulomb per second

• Commonly used prefixes for current are milliampere (mA) and microampere (μA)

A motor is a device that converts electrical energy into mechanical energy to produce motion.

• Motors are commonly used in various applications such as industrial machinery, household appliances, and vehicles.

• There are different types of motors including AC motors, DC motors, and servo motors.

• Motors consist of a rotor, stator, and various components such as coils, magnets, and brushes.

• Examples of motors include electric

ACB stands for Air Circuit Breaker, a type of circuit breaker that operates in the air instead of oil or gas.

• ACB is used to protect electrical circuits from overloads and short circuits.

• It automatically cuts off the power supply when a fault is detected.

• ACBs are commonly used in industrial and commercial buildings.

• Examples of ACB manufacturers include Siemens, Schneider Electric, and ABB.