B5 Plus Assistant Manager Electrical Maintenance Interview Questions and Answers

Transformer is a static device is change is ac voltage one level and another level but no change in frequency the work in mutual induction method.

Sailent type rotor and cylinder type rotor of uses in syuchronus machine.

A step up transformer is a type of transformer that increases the voltage level from the input side to the output side.

• Consists of more turns on the secondary coil than the primary coil

• Used to increase voltage levels for long distance power transmission

• Commonly found in power distribution systems and electrical grids

A distribution transformer is a device used to step down high voltage electricity to a lower voltage suitable for use in homes and businesses.

• Converts high voltage electricity from power lines to lower voltage for distribution

• Commonly used in electrical distribution systems

• Helps reduce voltage for safe use in homes and businesses

• Can be mounted on poles or placed on the ground

• Examples: pole-mounted distribution transfor

An alternator is a device that converts mechanical energy into electrical energy in the form of alternating current.

• An alternator is commonly used in vehicles to charge the battery and power the electrical system.

• It consists of a rotor, stator, diode rectifier, and voltage regulator.

• Alternators produce alternating current (AC) which is then converted to direct current (DC) for use in the vehicle.

• They are more efficient...read more

A synonyms machine is a tool or software that helps find alternative words with similar meanings for a given word.

• A synonyms machine can be a thesaurus or a feature in word processing software.

• It helps writers and speakers find the right word to convey their message effectively.

• Examples include online thesauruses like Thesaurus.com or built-in thesaurus in Microsoft Word.

A hysteresis motor is a type of synchronous motor that operates based on the hysteresis effect in magnetic materials.

• Hysteresis motors have a rotor made of a magnetic material with high hysteresis, such as cobalt steel.

• They do not require a separate DC excitation like other synchronous motors.

• Hysteresis motors are known for their smooth operation and low noise levels.

• They are commonly used in applications where precise...read more

Lubricant in rolling mills reduces friction between metal surfaces, prevents wear and tear, and improves efficiency.

• Lubricant reduces friction between metal surfaces in rolling mills

• Prevents wear and tear on machinery

• Improves efficiency by reducing energy consumption

• Helps in cooling the metal during the rolling process

• Examples: oil-based lubricants, grease, graphite-based lubricants

The major causes of roll breakage in maintenance engineering include material defects, improper setup, excessive tension, and foreign objects.

• Material defects such as weak spots or impurities can weaken the roll and lead to breakage.

• Improper setup or alignment of the roll can cause uneven stress distribution and eventual breakage.

• Excessive tension on the roll can exceed its load-bearing capacity and cause it to break.

• F...read more

The main causes of rolling mill bearing breakage are lack of lubrication, contamination, overloading, and misalignment.

• Lack of lubrication can lead to increased friction and heat generation, causing the bearing to fail prematurely.

• Contamination from dirt, debris, or water can accelerate wear and tear on the bearing surfaces.

• Overloading the bearing beyond its capacity can cause excessive stress and lead to failure.

• Misal...read more

Compressor overhead cause can be due to various factors such as high discharge pressure, low suction pressure, dirty filters, or worn out components.

• High discharge pressure can lead to overheating of the compressor.

• Low suction pressure can cause the compressor to work harder and overheat.

• Dirty filters can restrict airflow and cause the compressor to overheat.

• Worn out components such as valves or seals can lead to ineff

Wire rope condition can be measured by visual inspection, non-destructive testing, and load testing.

• Visual inspection for signs of wear, corrosion, broken wires, and distortion

• Non-destructive testing methods like magnetic particle inspection, ultrasonic testing, and dye penetrant testing

• Load testing to assess the strength and integrity of the wire rope under working conditions

Safety refers to measures taken to prevent accidents and injuries, while hazards are potential sources of harm or danger.

• Safety involves implementing protocols and procedures to minimize risks in the workplace

• Hazards are factors or situations that have the potential to cause harm

• Examples of hazards include electrical hazards, chemical hazards, and ergonomic hazards

• Safety measures may include training employees on prope...read more

Predictive maintenance is a proactive maintenance strategy that uses data analysis to predict when equipment failure is likely to occur.

• Uses data analysis to predict when equipment failure is likely to occur

• Helps in scheduling maintenance activities before a breakdown occurs

• Reduces downtime and increases equipment reliability

• Examples include vibration analysis, oil analysis, and thermography