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Cummins Intern Interview Questions and Answers

Updated 31 May 2024

Q1. What is the working of generator?

Ans.

A generator is a device that converts mechanical energy into electrical energy through electromagnetic induction.

  • Generators work on the principle of electromagnetic induction.

  • They consist of a coil of wire rotating in a magnetic field.

  • The rotation of the coil induces a current in the wire, producing electricity.

  • Generators are commonly used in power plants, wind turbines, and portable generators.

  • Different types of generators include AC generators and DC generators.

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Q2. Differentiate b/w Diesel engine and petrol engine.

Ans.

Diesel engines use compression ignition while petrol engines use spark ignition.

  • Diesel engines use compression ignition, while petrol engines use spark ignition.

  • Diesel engines are more fuel efficient than petrol engines.

  • Petrol engines are generally quieter than diesel engines.

  • Diesel engines produce more torque at lower RPMs compared to petrol engines.

  • Examples: Diesel engine - Cummins ISX, Petrol engine - Ford EcoBoost.

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Q3. 2. State the 2nd law of thermodynamics

Ans.

The 2nd law of thermodynamics states that the total entropy of an isolated system can never decrease over time.

  • Entropy in a closed system tends to increase over time

  • Heat will naturally flow from hot to cold objects

  • Efficiency of energy conversion processes is limited by the 2nd law

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Q4. Reverse a string without using function

Ans.

Reverse a string without using function

  • Iterate through the string from end to start and append each character to a new string

  • Use a temporary variable to swap characters at different positions in the string

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Q5. Components of generator

Ans.

Components of a generator include engine, alternator, fuel system, voltage regulator, cooling and exhaust system, and control panel.

  • Engine: provides power to the generator

  • Alternator: converts mechanical energy into electrical energy

  • Fuel system: supplies fuel to the engine

  • Voltage regulator: maintains a constant voltage output

  • Cooling and exhaust system: keeps the generator running at optimal temperature

  • Control panel: allows for monitoring and controlling the generator

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Q6. Load path of power cylinder

Ans.

The load path of a power cylinder refers to the route through which the force is transmitted from the power source to the load being moved.

  • The load path typically starts at the power source, such as a hydraulic pump or electric motor.

  • The force is then transmitted through the power cylinder, which converts the fluid or electrical energy into mechanical force.

  • Finally, the force is applied to the load being moved, such as a heavy object or machinery.

  • Examples of power cylinders i...read more

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Interview Process at Cummins Intern

based on 8 interviews
2 Interview rounds
Resume Shortlist Round
HR Round
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