Rotodyne Industries Mechanical Engineer Interview Questions and Answers

Reasoning, Maths qualities, General knowledge

Q1. Qualification and experience related questions
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Q2. Qualification related questions for freshers
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Q3. Experience related questions for experience
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Normal question for last employer

Q1. Family background
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Q2. Normal information
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Q1. Principal of hydraulic,how engine work, Proportional valves, valve block, types of hyd. Pump, hyd. Circuits, electrical circuit, working culture, customer handling, field experience etc
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The interview covered topics such as hydraulic principles, engine workings, proportional valves, valve blocks, types of hydraulic pumps, hydraulic and electrical circuits, working culture, customer handling, and field experience.
• Hydraulic principles involve the use of fluids to generate power and control movement.

• Engines work by converting fuel into energy, which is then used to power the vehicle or machine.

• Proportiona...read more
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Q1. Previous salary, why we hire you, experience, expected salary,why you want to join our company etc.
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Q1. Mobile interview done and technical questions related to transmission , engine , hydraulics , etc...
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Q2. Questions about Technical knowledge , experience ,
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Q1. Technical and also about your experience , about your background
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Q1. What is the difference between AC Drive and DC Drive
Ans. 
AC drives are used for controlling the speed of AC motors, while DC drives are used for controlling the speed of DC motors.
• AC drives are used for controlling the speed of AC motors by varying the frequency of the input power.

• DC drives are used for controlling the speed of DC motors by varying the voltage supplied to the motor.

• AC drives are more commonly used in industrial applications due to the prevalence of AC power ...read more
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Q2. What is the difference between SI and CI engine
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SI engines use spark plugs for ignition, while CI engines use compression for ignition.
• SI engines have spark plugs to ignite the air-fuel mixture, while CI engines rely on compression to ignite the fuel.

• SI engines are commonly used in gasoline vehicles, while CI engines are typically found in diesel vehicles.

• SI engines have a higher power output compared to CI engines.

• SI engines have a higher fuel efficiency compared t
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Q3. What is the specific gravity of battery
Ans. 
Specific gravity of a battery is a measure of its electrolyte's density compared to water.
• Specific gravity is typically measured using a hydrometer.

• It indicates the state of charge of a lead-acid battery.

• A fully charged lead-acid battery will have a specific gravity of around 1.265.

• A discharged battery will have a lower specific gravity, around 1.150.
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Q4. What is Hydraulic pump
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A hydraulic pump is a mechanical device that converts mechanical power into hydraulic energy by generating flow within a hydraulic system.
• Hydraulic pumps are used to generate flow to move fluids within a hydraulic system.

• They are commonly used in applications such as construction equipment, automotive systems, and industrial machinery.

• There are different types of hydraulic pumps, including gear pumps, vane pumps, and p...read more
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Q5. Difference between hydraulic and pneumatic system
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Hydraulic systems use liquid to transmit power, while pneumatic systems use gas.
• Hydraulic systems use oil or water as the fluid medium, while pneumatic systems use air or other gases.

• Hydraulic systems are typically used in heavy-duty applications like construction equipment, while pneumatic systems are used in lighter applications like air brakes in vehicles.

• Hydraulic systems are generally more powerful and can handle ...read more
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Based on technical theory knowledge

It's on your technical theory knowledge

Q1. What's Ohm's law ?
Ans. 
Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor.
• Current (I) is directly proportional to voltage (V) and inversely proportional to resistance (R): I = V/R

• It is named after German physicist Georg Simon Ohm

• It is commonly used in electrical engineering to calculate current, voltage, and resistance
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Q2. Why we hire you ?
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I have a strong technical background, excellent problem-solving skills, and a passion for learning and growing in the field of engineering.
• I have a Bachelor's degree in Engineering with a focus on [specific field].

• I have completed internships at [company name] where I gained hands-on experience in [relevant skills].

• I am proficient in [programming languages/tools] and have a strong understanding of [engineering principl
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