# How to Master Industrial Engineering for GATE Mechanical/PI Engg

Today I will be telling you How to Master Industrial Engineering for GATE Exam (Mechanical).

But before that tell me: Are you the one who doesn’t understand how to start with the preparation of any subject? Do you get confused more often when preparing for any subject? No more confusion from now on.

I am writing this blog on Industrial Engineering (I.E.) for the GATE Mechanical/Production & Industrial aspirants. Industrial Engineering (I.E.) is a very important subjects from the exam point of view.

And if you are someone who is doing self study for GATE exam then this blog will be very useful for you. Follow this blog to prepare effectively for this subject.

**Note: In this blog, the time duration and day wise analysis are given, so, the time taken by any aspirants may vary that depends on the aspirant’s intellectual. Attempting Topic wise and subject wise test series regularly is recommendable.**

**Marks analysis of previous year questions has been shown below:**

**Production planning and control**

**Forecasting models and work-study: 74 marks **

Marks |
No. of questions |

1 mark | 25 |

2 marks | 22 |

5 marks | 1 |

**Aggregate production planning, Scheduling and MRP: 56 marks**

Marks |
No. of questions |

1 mark | 9 |

2 marks | 6 |

5 marks | 7 |

**Inventory Control and Break-Even Analysis: 84 marks**

Marks |
No. of questions |

1 mark | 13 |

2 marks | 18 |

5 marks | 7 |

**Operation Research **

**Linear Programming: 49 marks**

Marks |
No. of questions |

1 mark | 3 |

2 marks | 18 |

5 marks | 2 |

**Transportation: 15 marks**

Marks |
No. of questions |

1 mark | 2 |

2 marks | 4 |

5 marks | 1 |

**PERT and CPM: 58 marks**

Marks |
No. of questions |

1 mark | 5 |

2 marks | 19 |

5 marks | 3 |

**Simple Queuing models: 28 marks**

Marks |
No. of questions |

1 mark | 11 |

2 marks | 6 |

5 marks | 1 |

# Strategy to Prepare Industrial Engineering for GATE Exam (Mechanical).

**Production planning and control:**

**Forecasting models and work-study:**

**Day-1**

This topic is very easy and scoring also, although fewer questions have been asked about this topic till now it is recommended to solve questions of the previous year and standard books.

**Standard Book for Work-study for clearing concepts and solving questions**: O.P.Khanna (Industrial Engineering and management)

**Forecasting models methods: **Moving Average Methods for Forecasting, Weighted Average method, Exponential Smoothed Method.

**Standard Book for Forecasting models for clearing concepts and solving questions**: HIRA & Gupta (Operations Research)

**No. of Hours: **6-7 hours

**Aggregate production planning, Scheduling and MRP:**

**Day-2 & 3**

**Aggregate production planning and MRP**:

**Tips and instructions: **Fewer questions have been asked till now from this topic There are lots of topics from this unit which should be read twice before GATE exam so, suggesting you to read two times before **GATE exam**, just read like a storybook 1 hour daily. 1-mark theoretical questions can be framed from this part.

**Standard Book for clearing concepts: **O.P.Khanna (Industrial Engineering and management)

**Scheduling**:

**Topics: **Sequencing problems, Assumptions in sequencing Problems, Processing n jobs through one machine, SPT rule (Shortest processing Time), EDD rule (Earliest Due Date), Processing n jobs through 2 machines, Processing n jobs through 3 machines.

**Tips and instruction:** Very important, very easy and scoring topic. Solve numerical on SPT and EDD rule for calculating Completion time of the jobs, mean flow time, average in process inventory, lateness, mean lateness, maximum lateness, number of jobs actually late.

**No. of Hours: **6-7 hours

**Inventory Control and Break-Even Analysis:**

**Day- 4 ,5 & 6**

**Inventory control:**

**Topics**: Basic terminologies like Ordering cost (procurement cost or replenishment cost), carrying cost or (inventory or holding cost), purchase cost, EOQ (Economic Ordering cost); Inventory models with Deterministic Demand (Learn all the models given in Hira and Gupta book inside this topic), Inventory models with Probabilistic Demand.

**Tips and instruction**: This is one of the important of Operation research and this topic should not be left at any cost. Solve all the previous year GATE question of ME and PI branch. Also, practice quality questions from the standard book.

**Standard Book for clearing concepts and solving numerical: **HIRA & Gupta (Operations Research)

**No. of Hours: **14-16 hours

**Break-even analysis:**

**Tips and instruction: **This topic is very easy and can be learned from the standard book “Hira and Gupta”, few previous year GATE questions of ME and PI are there to solve for practice.

**Standard Book for clearing concepts and solving numerical: **HIRA & Gupta (Operations Research)

**No. of Hours: **2-3 hours

**Operations Research:**

**Day- 7, 8 & 9**

**Linear Programming:**

**Topics: **Assumptions in Linear programming Models, Formulation of LPP, Graphical method of solution, Theory of simplex method and its technique or Algorithm,

Some important definitions like solution, Feasible solutions, Basic solution, Basic feasible solution, Non-degenerate basic solution, degenerate basic feasible solution, Optimal basic feasible solution, Unbounded solution, Set of points, Convex and non-convex sets.

Artificial variable techniques, The Big-M Method, Dual Simplex Method.

**Tips and instruction:** You must have good knowledge of basic definitions as I mentioned in the topics section which will help you to find the type of solutions. Solve questions from previous year GATE and ESE of ME & PI branch. Practice formulation of LPP from the standard book and also practice questions on graphical methods and simplex method too. You must know how to draw the graph of every solutions mentioned above and what should be the final table in Simplex method for every solution of the given set of constraints.

**Standard Book for clearing concepts and solving numerical : **HIRA & Gupta (Operations Research)

**No. of Hours: **12-14 hours

**Transportation:**

**Day- 10 & 11**

**Topics: **Assumptions in the Transportation model, Definition of the Transportation Model, Definitions of the different types of solution, Matrix terminology, Formulation and solution of Transportation Models, to find an initial feasible method: North-west Corner Rule (NWCM), Row Minima Method, Column Minima Method, Least-Cost Method (Matrix Minima Method or Lowest cost Entry Method), Vogel’s Approximation method (VAM) or Penalty method or Regret method.

To find an Optimal solution method: The Stepping-Stone Method, The Modified Distribution (MODI) Method or the u-v Method. Degeneracy in Transportation Problem, Unbalanced Transportation Problem, The Maximization Problem.

**Tips and instruction: **Few questions have been asked in the GATE exam till now but still 2 marks questions can be framed from this topic so practice questions from the standard book for all the 6 methods. Previous GATE and ESE questions are recommended to solve.

**Standard Book for clearing concepts and solving numerical: **HIRA & Gupta (Operations Research)

**No. of Hours: **8-9 hours

**PERT and CPM:**

**Day- 11 & 12**

**Topics: **Basic Tools and Techniques of Project Management, Network Logic (Network or Arrow Diagram), Numbering the Events (Fulkerson’s Rule), Activity on Node Diagram, Critical Path Method (CPM), Programme Evaluation and Review Technique (PERT), Cost Analysis and Crashing the Network.

**Tips and instruction:** Very important topic from the GATE point of view and very easy too. There are very few contents to cover inside this topic so suggesting you to cover everything that I mentioned and practice Previous year GATE questions as some good questions have been asked from it. In PERT you will have to learn concepts for Z-score, probability, and relevant topics.

**Standard Book for clearing concepts and solving numerical: **HIRA & Gupta (Operations Research)

**No. of Hours: **7-10 hours

**Simple Queuing models:**

**Day- 13**

**Topics: **Introduction, Elements of a Queuing system (structure of a Queuing system), Kendall’s Notation for Representing Queuing Models, Probabilistic Queuing models- Single channel Queuing Theory-Models for Arrival and service times (Model-1) [(M/M/I): (FCFS/∞/∞)]

**Tips and instruction: **You must know all the terminologies which are asked to find out in the question and mug up all the relevant formulae.

**Standard Book for clearing concepts and solving numerical: **HIRA & Gupta (Operations Research)

**No. of Hours: **4-5 hours

**Assignment Models:**

**Day- 14**

**Topics: **Definition, Mathematical representation, Comparison with the transportation, solution of the Assignments models, The Hungarian method, Formulation and solution of the Assignment Problems, The Travelling salesman problem.

**Tips and instruction: **This topic is not so important but still 1-mark theoretical questions have been asked in the GATE exam so learn some theories of the above topics mentioned and Practice numericals from the standard book

**Standard Book for clearing concepts and solving numericals: **HIRA & Gupta (Operations Research)

**No. of Hours: **4-5 hours

And when you are done with preparation of Industrial Engineering subject, you can practice the mock tests or practice questions simultaneously related to this subject because they are quite necessary for your overall confidence building and preparation.

Well, I hope this was helpful to you, let me know in the comment section below.

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All the Best !!