This set of Flexible Manufacturing System Multiple Choice Questions & Answers (MCQs) focuses on “Material Transport System – Analysis of Vehicle Based System”.
1. Which is important for analyzing the performance of material transport system?
a) Unary Models
b) Qualitative Models
c) Binary Models
d) Quantitative Models
View Answer
Explanation: In order to analyze the performance of vehicle based material handling system, Qualitative Models are used. Certain parameters such as flow rates, cycle times will be kept as key performance indicators in these models.
2. Which of the following is generally a table which contains material flow data?
a) Stress Strain Diagram
b) Circuit Diagram
c) Network Diagram
d) From – To Chart
View Answer
Explanation: The table which contains material flow data is known as from – to chart. It includes distances covered by the vehicle to transport materials between multiple locations. Flow rates will also be included in this chart.
3. Which of the following diagram consists of nodes and arrows?
a) From – To Chart
b) Fish Bone Diagram
c) Network Diagram
d) Circuit Diagram
View Answer
Explanation: The Network diagram in analyzing the vehicle based material handling system consists of nodes and arrows. It represents the same kind of information regarding material flow as that of in from – to chart.
4. The left handed column in from – to chart represents destination points.
a) False
b) True
View Answer
Explanation: The left handed column in from – to chart represents origination points. Origination points refer to the loading stations. Whereas, the horizontal row represents the destination points in from – to chart.
5. Nodes represent the distances between locations in network diagram.
a) True
b) False
View Answer
Explanation: In Network diagram, nodes represent locations. Here, locations refer to the load and unload stations. Arrows represent the distances between the locations. Distances cannot be represented using nodes.
6. How is the total cycle time per delivery per vehicle calculated given TL = Loading Time, TC = Delivery Cycle Time, TU = Unloading Time, Ld = Distance travelled, Le = Vehicle emptying time till the next cycle is started, Vc = Carrier velocity
a) TC = TL / Ld / Vc + TU + Le / Vc
b) TC = TL– Ld / Vc + TU + Le / Vc
c) TC = TL– Ld / Vc * TU + Le / Vc
d) TC = TL + Ld / Vc + TU + Le / Vc
View Answer
Explanation: The total cycle time (TC ) per delivery per vehicle is calculated as: TC = TL + Ld / Vc + TU + Le / Vc. Given, TL = Loading Time, TC = Delivery Cycle Time, TU = Unloading Time, Ld = Distance travelled, Le = Vehicle emptying time till the next cycle is started, Vc = Carrier velocity
7. Which is defined as the proportion of the total shift time that the vehicle is operational?
a) Elastic Limit
b) Proportional Limit
c) Traffic Congestion
d) Availability
View Answer
Explanation: The proportion of the total shift time that the vehicle is operational is known as Availability. It is the time where the vehicle will not be broken down or get repaired. It is the time purely dedicated to material transporting.
8. Which of the following is used for estimating the effect of loss on the performance of material transport system?
a) Performance Factor
b) Loss Factor
c) Traffic Factor
d) Time Factor
View Answer
Explanation: The parameter which is used for estimating the effect of loss on the performance of material transport system is known as Traffic Factor. The losses include traffic congestion and the efficiency of manual drivers in manually operated trucks.
9. Which is defined as the actual work rate of the human operator relative to the work rate expected?
a) Worker Efficiency
b) Loss Factor
c) Traffic Factor
d) Time Factor
View Answer
Explanation: The parameter which is defined as the actual work rate of the human operator relative to the work rate expected is known as worker efficiency. It is determined under standard working conditions.
10. Which is defined as the total work that must be completed by the material transport system in 1 hr?
a) Recycling Load
b) Workload
c) Partial Load
d) Vehicle Load
View Answer
Explanation: The parameter which is defined as the total work that must be completed by the material transport system in 1 hour is known as Workload. It must be expressed in terms of time.
11. How is the available time calculated?
a) AT = A + Ft * Ew
b) AT = (A / Ft) * Ew
c) AT = A – (Ft / Ew)
d) AT = A * Ft * Ew
View Answer
Explanation: The available time calculated as: AT = A * Ft * Ew. where, AT = Available Time, Ft = Traffic Factor, Ew = Worker efficiency. It is the total time available for the machine to operate in a periodic manner to achieve the target.
12. How is the rate of deliveries per vehicle calculated?
a) Rdv = AT * Tc
b) Rdv = AT – Tc
c) Rdv = AT + Tc
d) Rdv = AT / Tc
View Answer
Explanation: The rate if delivery per vehicle is calculated as: Rdv = AT / Tc. where, Rdv = Rate of deliveries per vehicle, AT = Available Time, Tc = Delivery Cycle Time. It must be as maximum as possible so that the dispatching rate will be increased.
13. How is the number of carriers required for a given material handling system calculated?
a) nc = Rdv * Rf
b) nc = Rdv – Rf
c) nc = Rdv / Rf
d) nc = Rf / Rdv
View Answer
Explanation: The number of carriers required for a given material handling system is calculated using the relationship: nc = Rf / Rdv. Where, nc = number of carriers required, Rf = Total delivery requirements, Rdv = Delivery rate per vehicle.
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