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Industry 4.0 · Assembly line balancing

8 questions · 8 marks · 1 paper

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Industry 4.0

Assembly line balancing

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
NAT: Numerical response. No negative marking.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Q1MCQ1 Mark·Choose one option
Key ↓
The Production rate of an assembly line is determined by its
1. ASlowest station
2. BFastest station
3. CIdle station
4. DNone of these
Read the passage below, then answer Q2–Q3
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:
Q2NAT1 Mark·Write the number
Key ↓
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)
Your answer:
Q3NAT1 Mark·Write the number
Key ↓
What is the theoretical minimum number of workstations required?
Your answer:
Read the passage below, then answer Q4–Q8
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.
Q4NAT1 Mark·Write the number
Key ↓
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)?
Your answer:
Q5NAT1 Mark·Write the number
Key ↓
What is the maximum cycle time of the system?
Your answer:
Q6MCQ1 Mark·Choose one option
Key ↓
The factory works for one 8-hour shifts each day. Is it possible to achieve an output of 32 units/day
1. ANo
2. BYes
Q7NAT1 Mark·Write the number
Key ↓
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)
Your answer:
Q8NAT1 Mark·Write the number
Key ↓
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)
Your answer:

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1A

Q21.7 to 2

Q37

Q412

Q585

Q6B

Q718.5 to 19.5

Q880 to 81

Questions and answer keys are reproduced from the official IIT Madras BS papers. Topics and repeated question types are BTechi’s own grouping. BTechi is not affiliated with IIT Madras.