Week-03
Q1. Concurrent engineering provides improvements from the Sequential engineering using
a) current technology in product manufacturing
b) current technology in product design
c) parallel activities in product development
d) All of these
Q2. Emergence of Concurrent engineering methodology stems from
a) Integrated function design process
b) Interlinked information flow
c) Multidirectional information exchange
d) All the above
Q3. Benefits of concurrent engineering methodology stems in the
a) Reduced development and production lead-time
b) Improvement in final product quality
c) Enhanced process engineering
d) All of these
Q4. Requirements for catering to the identified influencing dimensions are
a) Organizational requirements
b) Communication requirements
c) Product development methodologies
d) All the above
Q5. If a company requires 3000 units of turned shafts and the technological coefficients of scrap and
input are 0.667 and 2.333, respectively. What will be the number of raw units required?
a) 9000
b) 7000
c) 2000
d) 5000
Solution: Number of raw units required = Total units required × Technological coefficient of input
= 3000 × 2.333 = 7000
Q6. If a company requires 3000 units of turned shafts and the technological coefficients of scrap and
input are 0.667 and 2.333, respectively. What will be the number of units scraped?
a) 9000
b) 7000
c) 2000
d) 5000
Solution: Number of units scraped = Total units required × Technological coefficient of scrap
= 3000 × 0.667 = 2000
Q7. The unit cost of raw material, salvage value and processing are $9, $2.5, and $6, respectively. The
technological coefficients of scrap and input are 0.4 and 1.7, respectively. What will be the unit
output cost?
a) 14.3
b) 25.5
c) 9.2
d) 24.5
Solution: Unit output cost = [{Technological coefficient of input × (Unit cost of raw material + Unit cost of
processing)} - (Technological coefficient of scrap × Unit cost of salvage value)]
= [{1.7 × (9 + 6)} - (0.4 ×2.5)] = 24.5
Q8. For the case of an engine lathe, manufacturing lead time was 3400 min and machining time was
30 min, 2500 are the number of units to be machined and time per unit was obtained as 1.33 min.
What is be the setup time?
a) 50 min
b) 75 min
c) 100 min
d) 62.5 min
Solution: Setup time = Manufacturing lead time - (No. of units to be machined × time per unit)
= [3400 - (2500 × 1.33)] min = 75 min
Q9. In case of a turret lathe, the setup time for machining was 20 min, number of units to be machined
are 2500 and time per unit was 1 min. What will be the manufacturing lead time?
a) 1250 min
b) 2480 min
c) 2500 min
d) 2520 min
Solution: Manufacturing lead time = Setup time + (No. of units to be machined × time per unit)
= [20 + (2500 × 1)] min = 2520 min
Q10. The manufacturing lead times for a turret lathe and engine lathe are 1250 min and 750
min, respectively. What will be the percentage improvement in the manufacturing lead time?
a) 166.66%
b) 60%
c) 40%
d) None of the above
Solution: Percentage improvement = [(Lead time TL – lead time EL) × 100]/ Lead time TL
= [(1250 – 750) × 100] / 1250 = 40 %
