BSIE Bachelor of Science in Industrial Engineering MCQ 3 — Questions and Answers
Question 1: In linear programming, the simplex method moves from one basic feasible solution to another by performing which operation?
- Gradient descent step
- Pivot operation on the basis (Correct answer)
- Branch and bound iteration
- Lagrangian relaxation
Correct answer: Pivot operation on the basis
The simplex method performs a pivot to swap one variable into the basis and one out, moving to an adjacent vertex of the feasible polytope.
Question 2: What does the 'takt time' represent in lean manufacturing?
- The time it takes to complete one production cycle
- The available production time divided by customer demand rate (Correct answer)
- The bottleneck station cycle time
- The total value-added time per unit
Correct answer: The available production time divided by customer demand rate
Takt time = available production time ÷ customer demand, setting the heartbeat or pace of production needed to meet demand.
Question 3: In statistical process control, a control chart signals an out-of-control condition when a point falls beyond how many standard deviations from the centerline (under standard Western Electric rules)?
- 1
- 2
- 3 (Correct answer)
- 4
Correct answer: 3
Standard control limits are set at ±3 sigma; a point beyond these limits signals a likely assignable cause.
Question 4: Which type of production layout arranges machines by the type of operation they perform, grouping all lathes together, all drills together, etc.?
- Product layout
- Cellular layout
- Process layout (Correct answer)
- Fixed-position layout
Correct answer: Process layout
A process (functional) layout groups similar machines or functions together, suitable for low-volume, high-variety production.
Question 5: The EOQ (Economic Order Quantity) model minimizes the sum of which two cost components?
- Setup cost and quality cost
- Ordering cost and holding cost (Correct answer)
- Shortage cost and production cost
- Transportation cost and inspection cost
Correct answer: Ordering cost and holding cost
EOQ balances ordering (or setup) costs against inventory holding costs to find the quantity that minimizes total annual inventory cost.
Question 6: In work measurement, a 'normal time' is calculated by multiplying observed time by which factor?
- Allowance factor
- Performance rating factor (Correct answer)
- Utilization factor
- Learning curve exponent
Correct answer: Performance rating factor
Normal time = Observed time × Performance rating, adjusting the observed time to what a 100%-pace worker would take.
Question 7: Which supply chain risk strategy involves holding duplicate suppliers or inventory buffers to protect against disruptions?
- Lean strategy
- Speculative strategy
- Redundancy strategy (Correct answer)
- Postponement strategy
Correct answer: Redundancy strategy
Redundancy strategies (dual sourcing, safety stock) trade cost for resilience by ensuring backup capacity when primary sources fail.
BSIE Bachelor of Science in Industrial Engineering MCQ 3
In linear programming, the simplex method moves from one basic feasible solution to another by performing which operation?