Day 10 Work Study – ECET 2026 Mechanical

Why this topic is important for ECET?

Work study is one of the most scoring topics in Industrial Management. Questions often appear on time study, motion study, productivity improvement, and standard time calculations. Since it involves simple logic + formulas, students who prepare well can answer quickly and gain extra marks in ECET 2026.

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📘 Concept Notes

Work Study is the systematic study of work with the objective of improving productivity and efficiency. It aims to make the best possible use of men, machines, and materials.

It has two main techniques:

1. Method Study (Motion Study)

• Purpose: Find the best method of doing a job.
• Steps:
  1. Select → Identify job/process.
  2. Record → Note all details (charts, diagrams).
  3. Examine → Analyze critically to reduce unnecessary steps.
  4. Develop → Create new, improved method.
  5. Define → Clearly specify the new method.
  6. Install → Implement in workplace.
  7. Maintain → Monitor performance.

Tools: Process charts, flow diagrams, SIMO charts.
Example: Reducing unnecessary hand movements in an assembly line.

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2. Work Measurement (Time Study)

• Purpose: Find the time required for a qualified worker to complete a task at a defined level of performance.
• Steps:
  1. Select → Job for study.
  2. Measure → Observe using stop-watch/time study devices.
  3. Rate → Apply performance rating (worker efficiency).
  4. Allowances → Add relaxation, fatigue, personal allowances.
  5. Standard Time → Fix time for job.

Formula for Standard Time:

Normal Time:

Example: If observed time = 1.2 min, performance rating = 120%, allowance = 10% →
Normal Time = 1.2×1.2=1.441.2 \times 1.2 = 1.441.2×1.2=1.44 min
Standard Time = 1.44×(1+0.1)=1.5841.44 \times (1+0.1) = 1.5841.44×(1+0.1)=1.584 min

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Benefits of Work Study

• Higher productivity.
• Optimum utilization of resources.
• Reduced cost of production.
• Better working conditions.

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⚙️ Formulas

1. Normal Time:

Standard Time:

Work Study Efficiency:

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🔟 10 MCQs

Q1. Work study mainly aims at:
a) Increasing wages of workers
b) Improving productivity
c) Reducing workforce
d) Improving material quality

Q2. Method study is mainly concerned with:
a) Time measurement
b) Improving the way of doing work
c) Performance rating
d) Worker allowances

Q3. Work measurement is primarily used to:
a) Find best method
b) Calculate standard time
c) Improve product design
d) Increase wages

Q4. If observed time = 1.5 min, performance rating = 110%, then Normal Time = ?
a) 1.5 min
b) 1.65 min
c) 1.25 min
d) 1.10 min

Q5. Standard time is calculated as:
a) Observed time × Rating factor
b) Normal time × (1 + Allowances)
c) Rated time – Allowances
d) Observed time + Normal time

Q6. Allowances in work study are given to compensate for:
a) Worker laziness
b) Fatigue, personal needs, delays
c) Higher wages
d) Machine breakdown

Q7. Which of the following is a work study tool?
a) Gantt chart
b) SIMO chart
c) Control chart
d) PERT chart

Q8. In time study, performance rating 125% means:
a) Worker is slower than normal
b) Worker is faster than normal
c) Worker is at standard pace
d) Worker efficiency = 80%

Q9. If Normal Time = 2.0 min, Allowance = 20%, then Standard Time = ?
a) 2.0 min
b) 2.2 min
c) 2.4 min
d) 2.6 min

Q10. Work study contributes to:
a) Higher cost of production
b) Lower productivity
c) Optimum use of resources
d) Reduced efficiency

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✅ Answer Key

Q	Ans
1	b
2	b
3	b
4	b
5	b
6	b
7	b
8	b
9	c
10	c

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🧠 Explanations

• Q1: Aim is to improve productivity → (b).
• Q2: Method study = improving the way of doing work → (b).
• Q3: Work measurement = fixing standard time → (b).
• Q4: Normal Time = 1.5 × 1.1 = 1.65 → (b).
• Q5: Standard time = Normal time × (1 + Allowances) → (b).
• Q6: Allowances cover fatigue, delays, personal needs → (b).
• Q7: SIMO chart is a work study tool (motion study) → (b).
• Q8: 125% rating means worker is faster than normal → (b).
• Q9: ST = 2 × (1+0.2) = 2.4 → (c).
• Q10: Work study ensures optimum utilization of resources → (c).

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🎯 Motivation / Why Practice Matters

In ECET 2026, Industrial Management questions are direct and scoring. Most involve basic logic + quick calculations. If you practice regularly:

• You’ll answer in less than 30 seconds per question.
• You’ll secure easy marks which improve overall rank.
• You’ll develop speed & accuracy, crucial for competitive exams.

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