The IIT Madras BS Industry 4.0 (Industry 4.0) Quiz 1 paper sat on 26 Oct 2025, in the September 2025 term: 20 questions for 20 marks in 120 minutes. Every question is below with its answer. Take it as a timed mock test to be marked, or read it through first.
Match Col A with Col B for landmark outcome of industrial era :
1.0:CNC, 2.0:Mass production, 3.0: Digitization, 4.0:Steam Engine
1.0:Steam Engine, 2.0:mass production, 3.0: digitization, 4.0:CNC
1.0:Mass production, 2.0:Steam Engine, 3.0: digitization, 4.0:CNC
1.0:Steam Engine, 2.0:mass production, 3.0: CNC, 4.0: Digitization
Correct answer
1.0:Steam Engine, 2.0:mass production, 3.0: CNC, 4.0: Digitization
Identify the Industry 4.0 version of transportation.
IC engine
Electric car
Hyperloop
Correct answer
Hyperloop
Select the layout(s) which do not require general supervision:
Product layout
Process layout
Group layout
Fixed position layout
Correct answer
Process layout
Which of the following is an advantage of Process Layout?
Low material handling
Total production time per unit is small
Low training cost for the operators
It can accommodate high variety of products
Correct answer
It can accommodate high variety of products
Following is the layout from an aircraft manufacturing company. Identify the layout from the figure below.
Product layout
Process Layout
Group layout
Fixed position layout.
Correct answer
Fixed position layout.
Select the appropriate layout for Quadrants A, B, D in the following figure:
A: Group layout, B: Product layout , D: Process layout
A: Product layout, B: Process layout , D: Group layout
A:Process layout, B:Group layout , D: Product layout
Correct answer
A:Process layout, B:Group layout , D: Product layout
Which of the following is an advantage of Product Layout?
Small in-process inventory
It can accommodate high variety of products
High utilization of machines
Low investment
Correct answer
Small in-process inventory
The Production rate of an assembly line is determined by its
Slowest station
Fastest station
Idle station
None of these
Correct answer
Slowest station
Select the correct statements from below:
Optimal solution in a facility location problem using Euclidean method will result in a region
Optimal solution in a facility location problem using Euclidean method rarely matches the center of gravity
Optimal solution in a facility location problem using Euclidean method will result in a point
Optimal solution in a facility location problem using Euclidean method matches the center of gravity in not of the cases
Correct answers
Optimal solution in a facility location problem using Euclidean method rarely matches the center of gravity
Optimal solution in a facility location problem using Euclidean method will result in a point
Identify the examples for Offshoring from the list below:
Micron Technology, a US based semiconductor giant, setting up a Supply Chain Analytics team, in India.
Micron signs an agreement with Taiwan based TSMC Co., to manufacture sillicon wafer for their ICs.
Western Australia’s electricity network agency assigns Tata Consultancy Services at Pune, to support it with an overhaul of its legacy IT systems, aimed at delivering cheaper and more reliable power.
Tata Motors assigns the manufacturing of its braking system to TACO group.
Correct answers
Micron Technology, a US based semiconductor giant, setting up a Supply Chain Analytics team, in India.
Micron signs an agreement with Taiwan based TSMC Co., to manufacture sillicon wafer for their ICs.
A factory works for two 8-hour shifts each day and produces a total of 30,000 electric bulbs using a set of workstations. There are 8 activities required to manufacture the bulb, such that the sum of all activity times is equal to 12 seconds. Answer the given subquestions:
What is the cycle time (in seconds) at any workstations (round your answer to one decimal e.g. if your answer is 1.89 then enter your answer as 1.9)
Correct answer: 1.85 (accepted within ±0.15)
A factory works for two 8-hour shifts each day and produces a total of 30,000 electric bulbs using a set of workstations. There are 8 activities required to manufacture the bulb, such that the sum of all activity times is equal to 12 seconds. Answer the given subquestions:
What is the theoretical minimum number of workstations required?
Correct answer: 7
Consider the following precedence diagram. It has 12 activities. The numbers in blue and withing the braces denote the respective activity times in minute.
Based on the above data, answer the given subquestions.
What is the minimum cycle time of the system (answer in minutes without the unit e.g. if your answer is 10 min enter as 10)?
Correct answer: 12
Consider the following precedence diagram. It has 12 activities. The numbers in blue and withing the braces denote the respective activity times in minute.
Based on the above data, answer the given subquestions.
What is the maximum cycle time of the system?
Correct answer: 85
Consider the following precedence diagram. It has 12 activities. The numbers in blue and withing the braces denote the respective activity times in minute.
Based on the above data, answer the given subquestions.
The factory works for one 8-hour shifts each day. Is it possible to achieve an output of 32 units/day
No
Yes
Correct answer
Yes
Consider the following precedence diagram. It has 12 activities. The numbers in blue and withing the braces denote the respective activity times in minute.
Based on the above data, answer the given subquestions.
What is the balance delay of the following layout (round it to two decimals)
(1,2) -> (3) -> (4) -> (5) -> (6,7) -> (8,9) -> (10,11,12)
(Instruction: if your answer is 14.52%, enter as 14.5)
Correct answer: 19 (accepted within ±0.5)
Consider the following precedence diagram. It has 12 activities. The numbers in blue and withing the braces denote the respective activity times in minute.
Based on the above data, answer the given subquestions.
What is the efficiency of the given layout?
(Instruction: Round off to two decimals without percentage sign. If your answer is 70.51%, enter as 70.5)
Correct answer: 80.5 (accepted within ±0.5)
There are four demand points at A(1,2), B(2,3), C(3,5), D(4,1). The respective demand at these points are 7, 1, 3, 5. Select the optimal location based on cross-median approach.
(2,2)
(3,2)
(2.5,2)
(2,3)
Correct answers
(2,2)
(3,2)
(2.5,2)
Calculate the Euclidean distance between two machines located at the coordinates A(5,10) and B(2,6) in a shop floor.
[round off your answer to one decimal]
Correct answer: 5.05 (accepted within ±0.25)
POCOMO Mobile manufactures mobile phones of various types. Their product portfolio comprises of 15 types of headsets. These headsets comprise of limited types of components. Only a few of the components needs customization for different headsets. Which facility layout will best suit for POCOMO Mobile’s production?
Product layout
Group layout
Fixed position layout
All of these
Correct answer
Group layout
