Mahanagar Gas Graduate Apprentice Trainee Interview Questions and Answers

My aptitude test was to good and I cleared it in first round

Q1. What is the first law of gas laws?
Ans. 
The first law of gas laws is Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume at a constant temperature.
• Boyle's Law states that P1V1 = P2V2, where P represents pressure and V represents volume.

• This law is based on the principle that as the volume of a gas decreases, the pressure increases, and vice versa.

• Boyle's Law is commonly used in scuba diving to understand how changes i...read more
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Q2. What are G-codes and M-codes in CNC machines?
Ans. 
G-codes and M-codes are programming languages used in CNC machines to control various functions and operations.
• G-codes are used to command specific movements and functions, such as cutting speed and tool positioning

• M-codes are used to activate auxiliary functions like coolant systems or tool changes

• Examples of G-codes include G00 for rapid movement and G01 for linear interpolation

• Examples of M-codes include M06 for too
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Q1. Automobile engineering
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Q2. Production technology
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Q1. Basics of fluid mechanics, thermodynamics
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Q2. Badics of chemical engineering and process
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Chemical engineering involves the design, development, and operation of chemical processes and equipment.
• Chemical engineering applies principles of chemistry, physics, and mathematics to solve problems related to the production and use of chemicals and materials.

• Process design involves selecting the appropriate equipment, materials, and operating conditions to achieve the desired product quality and quantity.

• Chemical e...read more
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Q1. Full form of PESO
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PESO stands for Paid, Earned, Shared, and Owned media. It is a framework used in marketing and public relations to categorize different types of media channels.
• Paid media refers to advertising that a company pays for, such as online ads or sponsored content.

• Earned media is publicity gained through word-of-mouth, social media shares, or press coverage.

• Shared media involves content that is shared by users on social media...read more
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Q1. Basics knowledge of General Awareness, Basic to moderate level Aptitude and Moderate to hard level reasoning
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Q1. Basic principles of (Civil) Engineering includes FM, AM, Surveying, Soil Mech. Railway Engg, Highway - with a duration of 90 minutes
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Q1. What is required for parallel operation of two transformer
Ans. 
Synchronization, similar voltage ratios, and proper phase sequence are required for parallel operation of two transformers.
• Synchronization of the two transformers is crucial to ensure they operate together smoothly.

• The transformers should have similar voltage ratios to prevent imbalance in the system.

• Proper phase sequence must be maintained to avoid damaging the transformers or causing power quality issues.
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Q2. Why induction motor is self starting.
Ans. 
Induction motors are self-starting due to the rotating magnetic field produced by the stator windings.
• Induction motors have a unique design where the stator windings create a rotating magnetic field.

• This rotating magnetic field induces currents in the rotor windings, causing it to rotate and start the motor.

• No external starting mechanism is required for induction motors to begin operating.

• The principle of induction all...read more
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Q1. Tell me about your self?
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Q2. What your hobbies?
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