McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering , Electronics and Communication Engineering .
| 151. |
The x bar chart monitors: |
| A. | Between sample variability |
| B. | Within sample variability |
| C. | Instantaneous variability |
| D. | Natural variability |
| Answer» A. Between sample variability | |
| 152. |
In case someone is interested in process standard deviation, he should construct the ______________ chart. |
| A. | X bar |
| B. | R chart |
| C. | S chart |
| D. | None of the above |
| Answer» C. S chart | |
| 153. |
If data for MR chat shows non-normality, it is better to determine the control limits for the individuals control chart based on the ______________ of the correct underlying distribution. |
| A. | Percentage |
| B. | Percentiles |
| C. | Rank |
| D. | Mean |
| Answer» B. Percentiles | |
| 154. |
A sample of size 10 contains 50 non-conformities. The average number of non-conformities is: |
| A. | 7 |
| B. | 4 |
| C. | 5 (50/10 i.e. total non-conformities/sample size) |
| D. | 1 |
| Answer» C. 5 (50/10 i.e. total non-conformities/sample size) | |
| 155. |
When the number of defects is low, which of the following is true: |
| A. | We should use c or u chart |
| B. | Most samples will have non-zero defects |
| C. | Create a time between occurrence control chart |
| D. | None of the above |
| Answer» C. Create a time between occurrence control chart | |
| 156. |
Bias reflects the: |
| A. | The differences in observed accuracy and/or precision experienced over the range of measurements made by the system. |
| B. | The difference between observed measurements and a "true" value obtained from a master or gold standard |
| C. | Different levels of variability in different operating regimes, resulting from warm-up effects, environmental factors, inconsistent operator performance |
| D. | None of the above |
| Answer» B. The difference between observed measurements and a "true" value obtained from a master or gold standard | |
| 157. |
If variability of a product decreases, its quality ______________ |
| A. | remains unchanged |
| B. | decreases |
| C. | increases |
| D. | may increase or decrease |
| Answer» C. increases | |
| 158. |
The focal point of all quality control should be: |
| A. | Price focus |
| B. | Cost Focus |
| C. | Customer Focus |
| D. | Manufacturing Focus |
| Answer» C. Customer Focus | |
| 159. |
The key process input variables (KPIV) and key process output variables are developed during the ______________ phase. |
| A. | Define |
| B. | Analyze |
| C. | Measure |
| D. | Improve |
| Answer» C. Measure | |
| 160. |
An unbiased dice is rolled once. The probability of getting a number greater than 4 is: |
| A. | ¼ |
| B. | 1/6 |
| C. | ½ |
| D. | 1/3 |
| Answer» D. 1/3 | |
| 161. |
Which of the following statement is false: |
| A. | Important step of strategic quality management is identification of those dimensions in which the organization will compete |
| B. | Selection of suppliers should be based on quality, schedule, and cost, rather than on cost alone |
| C. | All of the individuals in the organization must have an understanding of the basic tools of quality improvement |
| D. | Manufacturing Unit should be the unit focusing on Quality Improvement among all units in an organization |
| Answer» D. Manufacturing Unit should be the unit focusing on Quality Improvement among all units in an organization | |
| 162. |
Cause and Effect Diagram can be used in the ____ and ____ step of DMAIC. |
| A. | Define, Measure |
| B. | Analyze, Control |
| C. | Analyze, Improve |
| D. | Define, Improve |
| Answer» C. Analyze, Improve | |
| 163. |
Which of the following is false regarding when acceptance sampling is useful: |
| A. | When testing is destructive |
| B. | When 100% inspection cost is very low |
| C. | When there are potentially serious product liability risk |
| D. | When 100% inspection is not technically feasible |
| Answer» B. When 100% inspection cost is very low | |
| 164. |
Let p0 be the incoming fraction defective and p1 be the outgoing fraction defective (Assume both p1 and p0 is greater than 0). If rectifying inspection is performed then: |
| A. | P0<p1 |
| B. | P1<p0 |
| C. | None of the above |
| D. | Cannot be determined |
| Answer» B. P1<p0 | |
| 165. |
A company wants to measure the length of a fan as a part of its quality control exercise. The type of data collected will be: |
| A. | Variable |
| B. | Attribute |
| C. | Cannot be determined |
| D. | None of the above |
| Answer» B. Attribute | |
| 166. |
If only ______________ causes of variation are present, the output of a process forms a distribution that is table over time and is predictable. |
| A. | Assignable |
| B. | Non-Random |
| C. | Natural |
| D. | Cannot be said |
| Answer» C. Natural | |
| 167. |
For an x bar chart, β risk can be defined as: |
| A. | The probability of detecting the shift in process mean from μo (in control value) to μ1 |
| B. | The probability of not detecting the shift in process mean from μ0 (in control value) to μ1 |
| C. | The probability of detecting the shift in process range from μ0 (in control value) to μ1 |
| D. | The probability of not detecting the shift in process range from μ0 (in control value) to μ1 |
| Answer» B. The probability of not detecting the shift in process mean from μ0 (in control value) to μ1 | |
| 168. |
Consider that for a process s bar (average standard deviation of 50 samples each of size 4) is found to be 10.04. The value of c4 (corresponding to sample size of .4) is .92. What is the estimated value of process standard deviation? |
| A. | 10.91 (s bar/ c4 is an unbiased estimator of standard deviation) |
| B. | 11.89 |
| C. | 12.67 |
| D. | 9.67 |
| Answer» A. 10.91 (s bar/ c4 is an unbiased estimator of standard deviation) | |
| 169. |
The basic assumption of calculating the control limits based on average sample size (for a p chart) will ______________ from/as those previously observed. |
| A. | Greatly differ |
| B. | Will be exactly the same |
| C. | Not greatly differ |
| D. | None of the above |
| Answer» C. Not greatly differ | |
| 170. |
The g chart is the control chart for: |
| A. | Average number of events |
| B. | Total number of events |
| C. | Mean number of events |
| D. | None of the above |
| Answer» B. Total number of events | |
| 171. |
Attribute charts may be used when: |
| A. | Several characteristics can be jointly measured |
| B. | When one particular quality characteristic is of importance |
| C. | Specific information like process mean is required |
| D. | None of the above |
| Answer» A. Several characteristics can be jointly measured | |
| 172. |
The thickness of the blade of a fan is specified to lie between 4 cm and 6 cm. The length of the blades must lie between 10 cm and 20 cm. A fan blade randomly selected from a sample of 100 blades has a thickness of 5cm and a length of 21cm. The number of defect(s) the blade has is ______________. |
| A. | One |
| B. | Two |
| C. | There is no defect |
| D. | Three |
| Answer» A. One | |
| 173. |
The probability of getting a multiple of 2 on throwing a dice once is: |
| A. | 1/6 |
| B. | ¼ |
| C. | ½ |
| D. | 1/3 |
| Answer» A. 1/6 | |
| 174. |
Inspection of incoming/outgoing items is an example of ______________. |
| A. | Prevention Cost |
| B. | Appraisal Cost |
| C. | Internal Failure Cost |
| D. | External Failure Cost |
| Answer» B. Appraisal Cost | |
| 175. |
Four basic characteristics of an optimal process are: |
| A. | Economy, efficiency, control, quality |
| B. | Quality, Improvement, efficiency, productivity |
| C. | Economy, efficiency, productivity, cost |
| D. | Economy, efficiency, productivity, quality |
| Answer» D. Economy, efficiency, productivity, quality | |
| 176. |
______________ diagram is used for identifying potential relationship between two variables. |
| A. | Pareto |
| B. | Ishikawa |
| C. | Histogram |
| D. | Scatter |
| Answer» D. Scatter | |
| 177. |
Lots for acceptance sampling should be ______________ and ______________. |
| A. | Homogeneous, Large |
| B. | Heterogeneous, Small |
| C. | Homogeneous, Small |
| D. | Heterogeneous, Large |
| Answer» A. Homogeneous, Large | |
| 178. |
The roof of house of quality shows the interrelationship between: |
| A. | Functional Requirements |
| B. | Design Attributes |
| C. | Service Process |
| D. | Manufacturing Process |
| Answer» B. Design Attributes | |
| 179. |
X bar charts are uses to control the ______________ of a process. |
| A. | Dispersion |
| B. | Central tendency |
| C. | None of the above |
| D. | Both a and b |
| Answer» B. Central tendency | |
| 180. |
Given that for the three samples, the value of R bar is .66 and value of d2 corresponding to three is1.128, what is the estimated standard deviation? |
| A. | .43 |
| B. | .67 |
| C. | .58 |
| D. | .75 |
| Answer» C. .58 | |
| 181. |
Given L=3 and p=.03, estimate the sample size that can be used for construction of a p chart. |
| A. | 534 |
| B. | 321 |
| C. | 123 |
| D. | 291 ((1-p)∗L2/p gives us an estimate of sample size) |
| Answer» D. 291 ((1-p)∗L2/p gives us an estimate of sample size) | |
| 182. |
The chart used for tracking number non-conforming is: |
| A. | P |
| B. | Np |
| C. | X bar |
| D. | None of the above |
| Answer» B. Np | |
| 183. |
For a c chart, the OC curve plots the ______________ against ______________. |
| A. | Probability of Type 2 error, true mean number of defects |
| B. | Probability of Type 1 error, true mean number of defects |
| C. | Probability of Type 1 error, true total number of defects |
| D. | Probability of Type 2 error, true total number of defects |
| Answer» A. Probability of Type 2 error, true mean number of defects | |
| 184. |
Identification of customers and listening to the Voice of Customer (VoC) are a part of: |
| A. | Quality Assurance |
| B. | Quality Planning |
| C. | Quality Control and Improvement |
| D. | Quality Execution |
| Answer» B. Quality Planning | |
| 185. |
Ease of repair is associated with ______________ dimension of quality. |
| A. | Serviceability |
| B. | Performance |
| C. | Durability |
| D. | Perceived Quality |
| Answer» A. Serviceability | |
| 186. |
SIPOC diagram, used for understanding the flow in a process is used in ______________ stage of DMAIC. |
| A. | Define |
| B. | Measure |
| C. | Analyze |
| D. | Improve |
| Answer» A. Define | |
| 187. |
Two major components of fitness of use are Quality of Design and ______________. |
| A. | Quality of Conformance |
| B. | Quality of Service |
| C. | Quality of Specification |
| D. | none |
| Answer» A. Quality of Conformance | |
| 188. |
For new product development, the chosen methodology should be |
| A. | DMADV |
| B. | DMAIC |
| C. | Structured Design Methodology |
| D. | DMIE |
| Answer» A. DMADV | |
| 189. |
In DMAIC, redesigning of process to either remove bottlenecks or to reduce waste takes place in the ______________ stage. |
| A. | Define |
| B. | Measure |
| C. | Improve |
| D. | Control |
| Answer» C. Improve | |
| 190. |
The critical path method determines the ______________ path from the beginning to the end of the project. |
| A. | Shortest |
| B. | Quickest |
| C. | Longest |
| D. | Middle |
| Answer» C. Longest | |
| 191. |
The Operating characteristic curve shows the relationship between the probability of acceptance (on y axis) and ______________ (on x axis). |
| A. | Proportion defective |
| B. | Proportion acceptable |
| C. | Number of lots |
| D. | Size of lot |
| Answer» A. Proportion defective | |
| 192. |
In a double sampling plan, let d1 be the number of defects in the first sample and d2 be the number of defects in the second sample. Let c2 be the acceptance number for both samples. The condition for rejection is: |
| A. | D1+d2<c2 |
| B. | D1+d2>c2 |
| C. | D1∗d2>c2 |
| D. | D1∗d2<c2 |
| Answer» B. D1+d2>c2 | |
| 193. |
While random variability in a system can be removed by ______________, non-random variability requires ______________. |
| A. | Operator or management action, Improvement in the system |
| B. | Improvement in the system, operator or management action |
| C. | Statistical Quality Control, Quality Checks |
| D. | None of the above |
| Answer» B. Improvement in the system, operator or management action | |
| 194. |
The concept of rational sub group means that subgroups or samples be selected such that if assignable causes are present the chances for differences between subgroups will be ______________. |
| A. | minimized |
| B. | maximized |
| C. | neutralized |
| D. | optimized |
| Answer» B. maximized | |
| 195. |
Q-Q plot is used to check:/p> |
| A. | Normality of the dataset |
| B. | Number of defects |
| C. | Process mean |
| D. | Process standard deviation |
| Answer» A. Normality of the dataset | |
| 196. |
The OC curve provides a measure of the ______________ of the control chart. |
| A. | Sensitivity |
| B. | Duality |
| C. | none |
| D. | none |
| Answer» A. Sensitivity | |
| 197. |
Which of the following is not a type of attribute chart? |
| A. | P chart |
| B. | C chart |
| C. | U char |
| D. | X bar chart |
| Answer» D. X bar chart | |
| 198. |
The thickness of aluminum sheet is specified to be of 6±2 mm. The Upper Specification Limit and Lower Specification Limit for the sheet are: |
| A. | 4mm, 8mm |
| B. | 8mm, 4mm |
| C. | 6mm, 8mm |
| D. | 4mm, 6mm |
| Answer» B. 8mm, 4mm | |
| 199. |
Failure Mode and Effects Analysis, which prioritizes different sources of error, is used in ______________ stage. |
| A. | Define |
| B. | Measure |
| C. | Improve |
| D. | Analyze |
| Answer» D. Analyze | |
| 200. |
In a six sigma improvement project the least experienced individuals are: |
| A. | Green Belt |
| B. | Black belts |
| C. | Red Belts |
| D. | Master Black Belts |
| Answer» A. Green Belt | |
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