NHPC JE Previous Year Question Papers- Download PDF

NHPC JE Exam with Previous Year Question Papers (Download Free PDFs)

Cracking a competitive exam like the NHPC Junior Engineer (JE) is a dream for many aspiring engineers. With thousands of candidates vying for a limited number of seats, your preparation needs to be sharp, strategic, and well-targeted. While textbooks and coaching materials are essential, there's one resource that can truly give you an edge: NHPC JE Previous Year Question Papers.

These papers are more than just a collection of questions; they are a goldmine of insights into the exam's DNA. Solving them is a proven strategy that toppers and experts swear by. In this comprehensive guide, we'll not only provide you with direct links to download free NHPC JE question papers but also explain the immense benefits of incorporating them into your study plan.


NHPC JE Exam Pattern at a Glance

Before you dive into the question papers, it's vital to understand the official exam pattern. The NHPC JE Computer-Based Test (CBT) consists of 200 multiple-choice questions (MCQs).

SubjectNo. of QuestionsMarksDuration
Part I: Concerned Discipline (e.g., Civil, Electrical, Mechanical)1401403 Hours (180 minutes)
Part II: General Awareness3030
Part III: Reasoning Ability3030
Total200200
  • Negative Marking: Please note that there is a negative marking of 0.25 marks for every incorrect answer. This makes accuracy even more critical.


NHPC JE Previous Year Questions

Here are the direct links to download the official NHPC JE Previous Year Question Papers forMechanical engineering. These Questions are a must-have for your preparation.

Question: Which of the following is true for TIG welding with DCEN polarity?                          

(a) 30% heat is generated at the workpiece

(b) 10% heat is generated at the workpiece

(c) 90% heat is generated at the workpiece

(d) 66% heat is generated at the workpiece

Answer: d

Solution: For TIG welding with DCEN (Direct Current Electrode Negative) polarity, 66% of the heat is generated at the workpiece.

Question: Soldering fluxes perform which of the following tasks?          

(a) Decrease soldering time

(b) Promote tarnishing of the surface

(c) Promote oxidation of the surface

(d) Promote wetting of the faying surfaces

Answer: d

Solution: Soldering fluxes are used to promote the wetting of the faying surfaces. They do this by cleaning the surfaces to be joined, removing any oxides or impurities that would prevent the solder from flowing and bonding properly.

Question: Identify the type of fluid machine in the given figure.

(a) Radial flow

(b) Axial flow

(c) Inverted flow

(d) Mixed flow

Answer: a

Solution:

Question: Brake power is measured using a Prony brake for a ________ engine.              

(a) Variable speed

(b) Low speed

(c) Single cylinder

(d) Low power

Answer: b

Solution: A Prony brake is a simple absorption dynamometer used to measure the brake power of an engine. It works by applying a braking force to a flywheel or a drum and measuring the torque developed. The Prony brake is most suitable for measuring the brake power of low-speed engines, as it can be difficult to manage the friction and heat generated at high rotational speeds. For high-speed or variable-speed engines, other dynamometers like hydraulic or eddy current dynamometers are preferred due to their greater accuracy and ease of operation.

Question: Which of the following is NOT a loaded type of governor?     

(a) Porter governor

(b) Watt governor

(c) Proell governor

(d) Pickering governor

Answer: b

Solution: The question you've asked is a direct factual query. Based on the search results, the Watt governor is a simple, unloaded governor that operates based on the equilibrium of centrifugal and gravitational forces. The other governors listed—Porter, Proell, and Pickering—are all loaded types, meaning they have an additional weight or spring to increase their sensitivity.

Question: Ideal fluids are ________.     

(a) Non-viscous and compressible

(b) Viscous and compressible

(c) Non-viscous and incompressible

(d) Viscous and incompressible

Answer: c

Solution: Ideal fluids are a theoretical concept in fluid dynamics and are defined as being non-viscous (having no internal friction) and incompressible (having a constant density).

Question: Which of the following is a property of fluid which makes it suitable to be used in manometers?

(a) High co-efficient of thermal expion

(b) High viscosity

(c) Higher surface density

(d) Low viscosity

Answer: d

Solution: A low viscosity is a desirable property for a manometer fluid because it allows the fluid to respond quickly and accurately to changes in pressure, ensuring the fluid columns settle to their correct height without significant time lag. High viscosity would cause a slow, sluggish response.

Question: The COP of component given in the figure is ________.   

(a) W/Q1

(b) W/Q2

(c) Q2/W

(d) Q1/W

Answer: c

Solution:

Question: A machine gun of mass 25 kg fires a bullet of mass 30 gram with a velocity of 250 m/s. Find the velocity with which the machine gun will recoil.         

(a) 0.9 m/s

(b) 0.6 m/s

(c) 0.3 m/s

(d) 0.1 m/s

Answer: c

Solution: According to the law of conservation of momentum:

Initial Momentum = Final Momentum

Rearranging the equation to solve for the recoil velocity (V):

Substituting the given values:

The negative sign indicates that the machine gun's velocity is in the opposite direction of the bullet's velocity. The magnitude of the recoil velocity is 0.3 m/s.


How to Use These Papers for Maximum Benefit

Simply downloading the PDFs isn't enough. You need a structured approach to make the most of them.

  1. Start with the Latest Papers: Begin with the most recent papers to get a feel for the current exam trend and difficulty level.

  2. Simulate the Real Exam: Sit down in a quiet room with a timer and attempt the paper as if it were the actual exam. Stick to the 3-hour time limit. This helps you manage time pressure and build stamina.

  3. Analyze Your Performance: After completing the paper, evaluate your answers. Identify the number of correct and incorrect attempts, as well as the questions you left unattempted. This analysis will give you a clear picture of your strengths and weaknesses.

  4. Review and Revise: Go through the detailed solutions for every question, including the ones you got right. This will reinforce your understanding of the concepts and help you learn from your mistakes. Create a separate list of topics where you consistently make errors and focus on revising them.

  5. Repeat the Process: Continue this cycle with older papers. The more you practice, the more confident and prepared you will be for the final exam.


Why are NHPC JE Previous Year Papers a Game-Changer?

Solving previous year's papers is not just about practice; it's about smart preparation. Here's a look at the key benefits:

  • Understanding the Exam Pattern: Each question paper reveals the exact structure of the exam, including the number of questions, sections, and the weightage of each subject (e.g., Technical, General Awareness, and Reasoning). This helps you strategize your time and focus on high-priority areas.

  • Identifying High-Weightage Topics: By analyzing papers from different years, you can easily spot recurring themes and frequently asked questions. This allows you to prioritize your study efforts and dedicate more time to topics that are more likely to appear in the exam.

  • Improving Time Management: The NHPC JE exam is a timed test. By practicing papers under exam-like conditions, you train yourself to answer questions efficiently and complete the paper within the given time limit. This is crucial for success and helps reduce exam-day anxiety.

  • Boosting Speed and Accuracy: Consistent practice with these papers helps you build speed without sacrificing accuracy. You become familiar with the types of questions, allowing you to quickly identify the correct approach and avoid common mistakes.

  • Self-Assessment and Performance Analysis: Solving previous papers acts as a mock test. It helps you assess your current preparation level, identify your weak areas, and understand where you stand. You can then tailor your revision plan to strengthen those topics.

Frequently Asked Questions (FAQs)

Q1. Are the questions from previous years repeated in the NHPC JE exam?

While direct repetition of questions is rare, the underlying concepts and question patterns often get repeated. Solving these papers helps you master the concepts and the style of questions asked.

Q2. Where can I find the official NHPC JE syllabus?

The official NHPC JE syllabus is released with the recruitment notification on the official NHPC website. Reputable education portals also provide a detailed breakdown of the syllabus for each discipline.

Q3. How many previous year papers should I solve?

It is recommended that you solve at least the last 5 years' papers to get a comprehensive understanding of the exam trends and question patterns.


Call to Action

Your journey to becoming an NHPC Junior Engineer is a marathon, not a sprint. By making NHPC JE previous year question papers a central part of your preparation strategy, you are not just studying; you are training yourself to succeed. They are the most authentic tool for self-assessment, time management, and understanding the nuances of the exam.

Don't wait! Download the PDFs today, start your practice sessions, and take a significant step towards securing your dream career at National Hydroelectric Power Corporation. All the best for your preparations!

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