The Indian Iron & Steel Company (IISCO) Technician Interview Questions and Answers for Experienced

Electrician project work involves installation, maintenance, and repair of electrical systems.

• Electricians install and wire electrical systems in residential, commercial, and industrial buildings.

• They troubleshoot and repair electrical faults and malfunctions.

• They perform regular maintenance and inspections to ensure safety and compliance.

• Electricians may work on projects such as wiring new buildings, upgrading electri...read more

Cable laying work involves the installation of cables for various purposes.

• Cable laying work is done to establish connections for electricity, telecommunications, or data transmission.

• It involves the process of laying cables underground, underwater, or overhead.

• Cable laying technicians use specialized equipment and tools to ensure proper installation and maintenance.

• Examples of cable laying work include laying fiber op...read more

The inner diameter of ball bearing 1212 is 12 mm.

• The inner diameter of ball bearing 1212 is a measurement of the distance across the center of the bearing's inner ring.

• It is typically expressed in millimeters (mm).

• In the case of ball bearing 1212, the inner diameter is 12 mm.

The bearing used in an ID fan is typically a ball bearing.

• ID fans in industrial applications often use ball bearings for their high load capacity and durability.

• Ball bearings are designed to handle radial and axial loads, making them suitable for the rotating shaft of an ID fan.

• Other types of bearings, such as roller bearings or sleeve bearings, may also be used depending on the specific requirements of the ID fan.

The clearance of a bearing in diameter can be measured using a micrometer or a dial gauge.

• Use a micrometer or a dial gauge to measure the diameter of the bearing.

• Measure the diameter at multiple points around the bearing to ensure accuracy.

• Subtract the measured diameter from the specified or nominal diameter to calculate the clearance.

• Clearance can be positive (when the measured diameter is smaller than the specified d...read more

Dol starter is a type of motor starter used to start and stop motors in industrial applications.

• Dol stands for Direct-On-Line

• It is a simple and cost-effective method of starting motors

• It provides full voltage to the motor during starting

• It is commonly used for motors with low to medium power ratings

• Example: A Dol starter is used to start a conveyor belt motor in a factory

Encoder and decoder are devices used to convert digital signals into analog signals and vice versa.

• Encoder converts digital signals into analog signals for transmission or storage

• Decoder converts analog signals back into digital signals for processing or playback

• Examples include MP3 encoders and decoders, video encoders and decoders, and barcode scanners

Pump shaft vibration monitoring is required to ensure smooth operation and prevent damage to the pump and its components.

• Vibration monitoring helps detect any abnormalities in the pump's operation

• Excessive vibration can cause damage to the pump and its components

• Monitoring can help identify the root cause of vibration and prevent future issues

• Regular monitoring can help extend the lifespan of the pump

• Examples of monito...read more

IBR welding is a type of welding used in high pressure pipes that follows the guidelines set by the Indian Boiler Regulations.

• IBR stands for Indian Boiler Regulations

• IBR welding is a type of welding that follows the guidelines set by the Indian Boiler Regulations

• It is used in high pressure pipes to ensure safety and quality

• The welding process involves preheating the pipes, using specific electrodes, and following stric...read more

Gearbots are machines that use gears to transmit power and motion. There are various types of gearbots with different parts.

• Types of gearbots include spur gear, helical gear, bevel gear, worm gear, and planetary gear.

• Parts of gearbots include gears, shafts, bearings, housings, and lubricants.

• Spur gears are the most common type and have straight teeth that mesh together.

• Helical gears have angled teeth that create a smoo...read more