Jai Balaji Group Junior Mechanical Engineer Interview Questions and Answers for Experienced

Q1. Electrical basis questions. As that ckt. diagrams of motor satr and delta connection control & power supply.
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Q2. Motor megger value & cable size as per rating of motor.
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Motor megger value should be at least twice the rated voltage of the motor. Cable size should be selected based on the full load current of the motor.
• Motor megger value should be at least 2 times the rated voltage of the motor to ensure insulation integrity.

• Cable size should be selected based on the full load current of the motor to prevent overheating and voltage drop.

• For example, for a motor rated at 400V, the megger...read more
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Q3. OLR value of motor as per rating of motor & MPCB rating.
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OLR value of a motor is determined by the rating of the motor and the MPCB rating.
• OLR value is the Overload Relay value, which is used to protect the motor from overload conditions.

• The OLR value is typically set based on the rating of the motor and the rating of the Motor Protection Circuit Breaker (MPCB).

• For example, if a motor has a rating of 5 HP and the MPCB rating is 10A, the OLR value would be calculated accordin
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Q1. Name and job discussion
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Q1. 5S , kaizen, 7QC tool, Poka yoke, 3M
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Q1. 5S , kaizen, 7QC tools, Poka Yoke, 3M
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A comprehensive and technique to judge the sustability of an individual and his appropriatenses for t job

Q1. Quality assurance related questions
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Q1. What is steel & its types.
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Steel is a versatile alloy composed primarily of iron and carbon, known for its strength and durability.
• Steel is an alloy of iron and carbon, with carbon content typically ranging from 0.2% to 2.1%.

• It is one of the most widely used materials in construction, manufacturing, and engineering.

• Different types of steel include carbon steel, stainless steel, alloy steel, and tool steel.

• Carbon steel is the most common type, wi...read more
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Q2. Hardness scale measures in SS.
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The hardness scale measures the hardness of stainless steel (SS).
• The most commonly used hardness scale for SS is the Rockwell hardness scale.

• Other hardness scales used for SS include the Brinell hardness scale and the Vickers hardness scale.

• The hardness of SS is determined by measuring the resistance of the material to indentation or scratching.

• Different grades of SS have different hardness levels, which can affect the
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Q3. Which Types of furnace used in your company.
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Our company uses multiple types of furnaces for different purposes.
• Electric furnaces are used for heating and melting metals.

• Gas furnaces are used for heating and drying processes.

• Induction furnaces are used for melting and casting metals.

• Muffle furnaces are used for high-temperature applications like annealing and sintering.

• Box furnaces are used for heat treating and laboratory applications.
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Q4. Convert HRC to BHN.
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HRC to BHN conversion is possible using a conversion chart or formula.
• HRC (Rockwell Hardness C) and BHN (Brinell Hardness Number) are two different hardness scales used to measure the hardness of materials.

• To convert HRC to BHN, you can use a conversion chart or the following formula: BHN = (HRC - 13.3) * 10.4.

• For example, if the HRC value is 50, the corresponding BHN value would be (50 - 13.3) * 10.4 = 370.8.
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Q5. Last company Related Questions.
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Last company working activity, applications and materials, machine knowledge check..
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Q1. Question only for my wok related.
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Q2. Drive and power transformer question .
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Q3. Question me CV related.
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Q4. Questions me my field experience related and also cv related .
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Q5. Also questions me my personal related like family,financial etc.
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Q1. Drawing, panel mentnace, VFD
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Q2. Electrical instrumation
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Q3. Eot crane , VFD, forunce
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Q4. Eot cranes, VFD, forunce
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