Gates Maintenance Electrician Interview Questions and Answers

40 min

Q1. Why you want to join Rockwell
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Q1. How do 72 slot 50 hp motor riwinding
Ans. 
Rewinding a 72 slot 50 hp motor involves disassembling the motor, removing the old windings, and replacing them with new windings.
• Disassemble the motor carefully to access the windings

• Remove the old windings without damaging the core

• Calculate the number of turns and wire gauge needed for the new windings

• Wind the new coils carefully and evenly in the slots

• Connect the windings properly and test the motor for functionalit
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Q2. How do no nc ful form and connection
Ans. 
NO NC stands for Normally Open and Normally Closed. They refer to the state of a switch or relay when it is not activated.
• NO (Normally Open) - the switch is open (off) when not activated

• NC (Normally Closed) - the switch is closed (on) when not activated

• Used in electrical circuits to control the flow of current

• Commonly used in control panels, automation systems, and safety circuits
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Q3. How do earthing point cheack
Ans. 
Earthing points are checked by using a multimeter to measure the resistance between the earthing point and the earth electrode.
• Use a multimeter set to the resistance mode

• Connect one probe to the earthing point and the other probe to the earth electrode

• Check the resistance reading on the multimeter

• A low resistance reading indicates a good earthing connection

• Repeat the process for all earthing points in the system
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Q1. How do fan rewinding
Ans. 
Fan rewinding is the process of replacing the copper wire coils in the stator of a fan motor to restore its functionality.
• Disconnect the fan from the power source before starting the rewinding process.

• Remove the fan blades and outer casing to access the stator.

• Carefully unwind the old copper wire coils from the stator and measure their length and gauge.

• Select the appropriate gauge and length of copper wire for rewindin...read more
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Q1. What is working for contactor realay
Ans. 
A contactor relay is an electrical device used to control a high-power circuit with a low-power signal.
• Contactor relay consists of a coil, contacts, and an enclosure.

• When the coil is energized, it creates a magnetic field that pulls the contacts together to close the circuit.

• Contactor relays are commonly used in motor control circuits to start and stop motors.

• They can also be used in lighting control, heating systems,
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Q2. Question required as per H
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Q1. About differ kinds of plcs.
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Q1. Like what kind of saftey noms your follow in your previous organization.
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Q1. About family, ambition etc
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Q1. Water cooled chillers
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Q2. Water chiller is a device used to lower the temperature of water. Most chillers use refrigerant in a closed loop system to facilitate heat exchange from water where the refrigerant is then pumped to a loca...read more
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Q3. Both air-cooled chiller and water cooled chiller depend on an air stream as a means of heat transfer. The difference is that the water-cooled chillers or rather the cooling towers use a humid air stream (a...read more
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Q4. Vapor compression or vapor absorption. Chillers provide a continuous flow of coolant to the cold side of a process water system at a desired temperature of about 50°F (10°C)
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Q1. My number XXXXX
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Q1. Types of mcb and functions
Ans. 
MCB stands for Miniature Circuit Breaker. Types include single pole, double pole, triple pole, and four pole. Functions include overcurrent protection and short circuit protection.
• Types of MCBs: single pole, double pole, triple pole, four pole

• Functions: overcurrent protection, short circuit protection

• Examples: Single pole MCB for individual circuits, four pole MCB for three-phase circuits
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Q2. Motor dol starter and Star delta starter
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Maths and basic puzzles

Q1. Who is the encoder
Ans. 
An encoder is a device or circuit that converts information from one format to another.
• An encoder can be a hardware device or a software program.

• In the context of electrical engineering, an encoder is often used to convert analog signals into digital signals.

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

• Examples of encoders include rotary encoders used in motor control and opt
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