Explore topic-wise MCQs in Mechanical Engineering.

This section includes 144 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.

51.

Quality control methods extend beyond the external characteristics of the product or components of the product. The types of testing of the product or components include ______________.

A. operator, maintainer, and environmental
B. stress, destructive, and operating
C. in-house, public, and private
D. laboratory, destructive, and non-destructive
Answer» D. laboratory, destructive, and non-destructive
52.

A quality program within a project should be based on ______________ of errors to improve productivity along with quality levels.

A. early detection
B. early correction
C. late detection
D. prevention
Answer» E.
53.

A larger standard deviation for a normal distribution with an unchanged mean indicates that the distribution becomes:

A. narrower and more peaked
B. flatter and wider
C. more skewed to the right or left
D. a change in the standard deviation does not change the shape of the distribution
Answer» C. more skewed to the right or left
54.

Random variance in a process, as measured by the standard deviation, can be directly reduced by:

A. improving the overall system of production
B. increasing the number of quality inspectors
C. making use of run charts
D. identifying patterns of variance using control charts
Answer» E.
55.

Factory A produces 100 pieces of wooden legs used in manufacturing tables in 1 hour. The factory in total works for 3 hours. The quality manager decided to check the quality of the output by measuring the length of the legs (in cms). He decides to collect three samples (one for each hour). The sample size for each sample is fixed at 5. The data collected is present in the following table: What is the mean and range of leg length in sample 1?

A. Mean=10.3;Range=.3
B. Mean=10.1;Range=.8
C. Mean=10.2;Range=.6
D. Mean=9.9;Range=.5
Answer» C. Mean=10.2;Range=.6
56.

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» C. Statistical Quality Control, Quality Checks
57.

Suppose box A contains 4 red and 5 blue coins and box B contains 6 red and 3 blue coins. A coin is chosen at random from the box A and placed in box B. Finally, a coin is chosen at random from among those now in box B. What is the probability a blue coin was transferred from box A to box B given that the coin chosen from box B is red?

A. 15/29
B. 14/29
C. 1/2
D. 7/10
Answer» B. 14/29
58.

During which century, the manufacturers began to include quality processes in quality practices?

A. 17th century
B. 18th century
C. 19th century
D. 20th century
Answer» E.
59.

A fundamental tenet of modern quality management holds that quality is most likely to be achieved:

A. by planning it into the project
B. by developing careful mechanisms to inspect for quality
C. by developing prestigious products and processes
D. by striving to do the best job possible
Answer» B. by developing careful mechanisms to inspect for quality
60.

Self-inspection by the individual performing the work is used to achieve quality in a product. The advantages of self-inspection include ______________.

A. immediate feedback to permit adjustments to the process
B. early identification of errors prior to further integration
C. minimization of end product repairs and material waste
D. all of the above
Answer» E.
61.

Cause & Effect diagram used to i. Identify & organize possible causes of problem ii. Identify possible causes of solution iii. Identify possible causes of problem & determining its relation The correct order is

A. i only
B. i & iii
C. ii & iii
D. i, ii & iii
Answer» C. ii & iii
62.

For a double sampling plan the probability of acceptance on the combined samples is calculated as:

A. Maximum of probability of acceptance of first and second sample
B. Product of probability of acceptance of first and second sample
C. Average of probability of acceptance of first and second sample
D. Sum of probability of acceptance of first and second sample
Answer» E.
63.

In a factorial design, a(an) ______________ between independent variables indicates that the effect of one independent variable is different at different levels of the other independent variable.

A. main effect
B. factorial effects
C. interaction
D. collaboration
Answer» D. collaboration
64.

In factorial designs, the response produced when the treatments of one factor interact with the treatments of another in influencing the response variable is known as

A. the main effect
B. interaction
C. replication
D. none of these
Answer» C. replication
65.

A ______________ effect(s) analysis examines mean differences at each level of the independent variable.

A. main
B. simple main
C. interaction
D. simple interaction
Answer» C. interaction
66.

In order to achieve long-term quality improvements, management must do the following:

A. Motivate the employees with seminars, contests, and institution of programs such as "Quality Improvement" day
B. Create a quality control department and give the head of the department ultimate responsibility for quality improvement
C. Implement a formal quality control program with worker and management involvement
D. Establish financial incentive packages for workers
Answer» D. Establish financial incentive packages for workers
67.

Quality management includes forming and directing a team of people to achieve a qualitative goal within an effective cost and time frame that results in:

A. a project completed in the shortest possible time
B. a product or service that conforms to the requirement specification
C. an award-winning product that brings public recognition to the project
D. an innovative project that establishes the qualifications of the project team
Answer» C. an award-winning product that brings public recognition to the project
68.

The process of monitoring specific project results to determine if they comply with relevant quality standards is called:

A. Quality Assurance
B. Quality Control
C. Quality Planning
D. Quality Review
Answer» C. Quality Planning
69.

Which of the following is least likely to contribute to developing an effective project team supportive of quality?

A. Commitment to the project
B. Team member flexibility
C. Frequent turnover of personnel
D. Team interest in workmanship
Answer» D. Team interest in workmanship
70.

What statistical procedure is used to assess the statistical significance of the main effects and the interaction(s) in a factorial design?

A. t-test
B. correlation
C. analysis of covariance
D. analysis of variance
Answer» E.
71.

Analysis of variance is a statistical method of comparing the ______________ of several populations.

A. standard deviations
B. variances
C. means
D. proportions
Answer» D. proportions
72.

The process of determining that technical processes and procedures are being performed in conformance with scope requirements and quality plans is called quality:

A. management
B. assurance
C. process review
D. control
Answer» E.
73.

Does TQM approach have relevance to Indian industry in context to i. Customer satisfaction ii. People involvement iii. Policy management The correct order is

A. i only
B. i & ii
C. ii & iii
D. i, ii & iii
Answer» C. ii & iii
74.

Which of the following distributions is suitable to model the length of time that elapses before the first employee passes through the security door of a company?

A. Exponential
B. Normal
C. Poisson
D. Binomial
Answer» B. Normal
75.

Customers are the driving force in any project and determine the requirements to be met. In dealing with customers' complaints, it is important to ______________.

A. avoid commitment to correction on an "out of warranty" item
B. talk to them until they see the reason the complaints are trivial
C. give them something more than they contracted to receive to suppress any feelings of dissatisfaction
D. provide them with the full scope of the contracted product or service
Answer» E.
76.

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» D. Middle
77.

Common elements of winners are i. Senior management was actively involved ii. Control of overall process iii. Focus on customer The correct order is

A. i only
B. i & ii
C. i, ii & iii
D. None of the above
Answer» D. None of the above
78.

HRD at organizational level talks of i. Organization s manpower planning ii. Training iii. Performance appraisal The correct order is

A. i only
B. I & ii
C. ii & iii
D. i, ii & iii
Answer» E.
79.

PP & PPK is calculated for i. Initial production run ii. Future production iii. Initial process setting The correct order is

A. i & ii
B. ii & iii
C. i & iii
D. i, ii & iii
Answer» D. i, ii & iii
80.

Which of the following is the correct combination of specifications while designing a control chart?

A. Sample size, Frequency of sampling, specification limit
B. Sample size, Frequency of sampling, Number of defects
C. Sample size, Specification limit, process standard deviation
D. Sample size, Process mean, specification limit
Answer» B. Sample size, Frequency of sampling, Number of defects
81.

Process evaluation is to identify i. Validation of product ii. Potential failure prevention iii. Correctness of product The correct order is

A. i only
B. i & ii
C. ii & iii
D. None of the above
Answer» D. None of the above
82.

The ability of a product to be used for different purposes at different capacities and under different conditions determines its:

A. Usability
B. Flexibility
C. Operability
D. Availability
Answer» C. Operability
83.

A researcher conducted a 2 x 2 completely repeated measures factorial design and planned 15 participants in each condition. How many participants would be required to conduct this experiment?

A. 15
B. 30
C. 45
D. 60
Answer» B. 30
84.

The ______________ diagram starts with one item which then branches of into two or more items. This diagram is used to breakdown broad categories into finer levels of detail.

A. Affinity
B. Tree
C. Relations
D. Matrix
Answer» C. Relations
85.

Identify the charts which might give an indication of process going out of control (before the process has actually changed)

A. X bar and c
B. P and c
C. R and u
D. X bar and R
Answer» E.
86.

When output product of several sources is fed into a common stream, the pattern of the control chart expected is:

A. Stratification
B. Trend
C. Mixture
D. Cyclic Pattern
Answer» D. Cyclic Pattern
87.

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» D. Control
88.

When the k population means are truly different from each other, it is likely that the average error deviation:

A. Is relatively large compared to the average treatment deviations.
B. Is relatively small compared to the average treatment deviations.
C. Is about equal to the average treatment deviation.
D. Differ significantly between at least two of the populations.
Answer» C. Is about equal to the average treatment deviation.
89.

Which of the following is an assumption of one-way ANOVA comparing samples from three or more experimental treatments?

A. All the response variables within the k populations follow Normal distributions.
B. The samples associated with each population are randomly selected and are independent from all other samples.
C. The response variable within each of the k populations has equal variances.
D. All of the above.
Answer» E.
90.

You obtained a significant test statistic when comparing three treatments in a one-way ANOVA. In words, how would you interpret the alternative hypothesis H(a)?

A. All three treatments have different effects on the mean response.
B. Exactly two of the three treatments have the same effect on the mean response.
C. At least two treatments are different from each other in terms of their effect on the mean
D. Response.
Answer» D. Response.
91.

To determine whether the test statistic of ANOVA is statistically significant, it can be compared to a critical value. What two pieces of information are needed to determine the critical value?

A. Sample size, number of groups
B. Mean, sample standard deviation
C. Expected frequency, obtained frequency
D. MSTR The treatment mean square (MSTR), Mean Square Error (MSE)
Answer» B. Mean, sample standard deviation
92.

Failure Mode and Effects Analysis, which prioritizes different sources of error, is used in _________________ stage.

A. Define
B. Measure
C. Improve
D. Analyze
Answer» E.
93.

The treatment mean square (MSTR), Mean Square Error (MSE). If the true means of the k populations are equal, then MSTR/MSE should be:

A. more than 1.00
B. a positive number close to 1.00
C. a positive number close to 0.00
D. a negative value between 0.00 and - 1.00
Answer» C. a positive number close to 0.00
94.

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» B. Measure
95.

For a process which is six sigma complaint, the percentage of products within specifications is:

A. 95.20%
B. 99.73%
C. 99.10%
D. 96.78%
Answer» C. 99.10%
96.

Trend charts reflect the relative status of a program. Trend charts are effective means of ______________.

A. visibility reinforcing the growth of quality improvements to the workers
B. reflecting the precise status of quality failures
C. identifying to customers the failure rates of products
D. setting standards and goals for acceptable levels of quality
Answer» B. reflecting the precise status of quality failures
97.

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» E.
98.

Typically in a cause and effect diagram, the ______________ is used for classification of causes in the service industry.

A. 5Ms
B. 8Ps
C. 5Ss
D. 6Ps
Answer» D. 6Ps
99.

In ______________ step of Quality Function Deployment, product or service requirements are collected and analyzed through techniques like market research.

A. Identify Customer Attributes
B. Identify Design Attributes / Requirements
C. Conduct an Evaluation of Competing Products.
D. Evaluate Design Attributes and Develop Targets
Answer» B. Identify Design Attributes / Requirements
100.

When conducting an ANOVA, the F-Value calculated from the data will always fall within what range?

A. between negative infinity and infinity
B. between 0 and 1
C. between 0 and infinity
D. between 1 and infinity
Answer» D. between 1 and infinity