JBM Group Maintenance Electrician Interview Questions and Answers

Q1. Tell me about yourself.
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Q1. Fresher student for every field
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Q1. Fresher student for every field
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Q1. A few knowledge of ac and DC machine
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Q1. Star delta starter control circuit
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Q2. DG full load current
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Quantitative Aptitude and Reasoning, English Grammer and Technical

Q1. What spanner size required to remove 12 mm bolt?
Ans. 
The spanner size required to remove a 12 mm bolt is typically 17 mm.
• The spanner size needed is usually 5 mm larger than the bolt size

• In this case, a 17 mm spanner would be required to remove a 12 mm bolt
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Q2. What is tapping process?
Ans. 
Tapping process is a method of cutting internal threads in a hole with the help of a tool called tap.
• Tapping is commonly used in manufacturing to create threaded holes for screws, bolts, and other fasteners.

• The tap is rotated and advanced into the hole to cut the threads.

• There are different types of taps such as taper tap, plug tap, and bottoming tap.

• Tapping can be done manually or with the help of a machine like a tap...read more
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Q3. What is industry 4.0?
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Industry 4.0 refers to the fourth industrial revolution characterized by the integration of digital technologies into manufacturing processes.
• Involves the use of technologies such as IoT, AI, big data, and automation to create smart factories

• Focuses on interconnected systems that can communicate, analyze data, and make decisions autonomously

• Aims to increase efficiency, productivity, and flexibility in manufacturing pro...read more
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Q4. What is the M E S?
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MES stands for Manufacturing Execution System, a software system used in manufacturing to track and control production processes.
• MES is a computerized system used in manufacturing to manage and monitor production processes on the factory floor.

• It helps to track and control the flow of work in a manufacturing operation.

• MES can provide real-time data on production, inventory, quality, and other key metrics.

• Examples of ME...read more
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They took a aptitude test . In that test they give the questions of math, gk, gi, english, and the tread test.

Q1. Then in 2nd round they took a psycho test . Quite good .
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Q2. Introduction part was must for sure . Then what r the types of Electrical machine , circuit breaker, various laws of Electrical Engineering, did some calculation, then starters .
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Q1. 1.type and diffrance of encoders 2.MTBF&MTTR 3.Communication protocol plc
Ans. 
Encoders can be incremental or absolute, MTBF is Mean Time Between Failures, MTTR is Mean Time To Repair, common communication protocols for PLCs include Modbus and Profibus.
• Encoders can be incremental (provide relative position) or absolute (provide exact position)

• MTBF is the average time between failures of a system or component

• MTTR is the average time it takes to repair a failed system or component

• Common communicati...read more
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Q2. 4.Servo drive 5.vfd drive
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Plc programming test

Reasoning mathematics

Q1. How many types of motor and welding and heating and how many types power factor .
Ans. 
There are various types of motors, welding methods, heating techniques, and power factors in engineering.
• Types of motors include AC motors (induction, synchronous), DC motors (brushed, brushless), stepper motors, etc.

• Types of welding include arc welding, MIG welding, TIG welding, spot welding, etc.

• Types of heating methods include conduction, convection, radiation, induction heating, etc.

• Power factor types include leadi...read more
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