Ocl Iron & Steel Senior Electrician Interview Questions and Answers

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)

RJ45 connector is a standardized physical interface for connecting Ethernet cables to network devices.

• RJ45 connector is commonly used for Ethernet networking.

• It has 8 pins that are used to transmit data.

• RJ45 connectors are used in networking equipment like routers, switches, and computers.

• They are also used for connecting devices like printers, IP cameras, and VoIP phones.

PVC pipe is a type of plastic pipe commonly used in plumbing and electrical applications.

• PVC stands for polyvinyl chloride

• It is lightweight, durable, and resistant to corrosion

• Commonly used for water supply lines, drainage systems, and electrical conduit

• Available in various sizes and colors for different applications

Chapin is caused by a short circuit in an electrical system.

• Chapin is caused by a short circuit, which occurs when a current bypasses the normal load path and flows through an unintended path.

• Short circuits can be caused by damaged insulation, loose connections, or faulty equipment.

• Short circuits can lead to overheating, fires, and damage to electrical components.

• Proper insulation, regular maintenance, and using high-q...read more

RJ45 connectors are used for connecting Ethernet cables to networking devices such as computers, routers, and switches.

• Used for connecting Ethernet cables

• Commonly used in networking devices like computers, routers, and switches

• Has 8 pins for data transmission

• Provides a secure and reliable connection

The question covers topics related to electrical circuits and devices.

• Star delta starter is used to reduce the starting current of induction motors.

• Types of DC generators include shunt, series, and compound generators.

• Tube light connection circuit involves connecting the starter, choke, and tube light in series.

• Two-way switch connection is used to control a single light or group of lights from two different locations.

The answer includes information about types of starters, star delta connection, types of transformers, working of bukols relay, and types of DC motors.

• Types of starters include direct-on-line starter, star delta starter, auto transformer starter, and resistance starter.

• Star delta starter is used to reduce the starting current of induction motors.

• Star delta starter circuit diagram consists of three contactors, a timer, ...read more

A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers are used to increase or decrease voltage levels in electrical circuits.

• They consist of two coils of wire, known as the primary and secondary coils, wrapped around a core.

• The primary coil is connected to the input voltage source, while the secondary coil is connected to the output load.

• T...read more

An encoder is a device or software program that converts data from one format to another.

• An encoder can be used to convert analog signals to digital signals or vice versa.

• Encoders are commonly used in robotics, industrial automation, and digital communication systems.

• Examples of encoders include optical encoders, magnetic encoders, and rotary encoders.

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

• Motors can be found 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 work by creating a magnetic field that interacts with current-carrying conductors to generate force and motion.

AC VVFD stands for Alternating Current Variable Voltage Variable Frequency Drive.

• AC VVFD is a type of motor controller that varies the voltage and frequency of the electrical supply to control the speed of an AC motor.

• It is commonly used in industrial applications to regulate the speed of pumps, fans, conveyors, and other equipment.

• AC VVFDs can improve energy efficiency, reduce wear and tear on equipment, and provide p...read more