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.

101.

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.
102.

Consider for a process in control, the value of alpha is .0015. What is the value of the average run length?

A. 666 ( 1/alpha gives us an estimate of average run length)
B. 555
C. 444
D. None of the above
Answer» B. 555
103.

The parameters of s2 chart is specified using:

A. Normal Distribution
B. Geometric Distribution
C. Binomial Distribution
D. Chi-square distribution
Answer» E.
104.

Some organizations today are using "six sigma", to set the upper and lower limits on control charts rather than the traditional sigmas.

A. two
B. three
C. four
D. five
Answer» C. four
105.

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» C. neutralized
106.

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 these
Answer» D. None of these
107.

The same quality control manager decides to increase his daily sample size from three to six. The size of the control band will:

A. Increase
B. Decrease
C. Remain unchanged
D. Not determinable from given data
Answer» C. Remain unchanged
108.

From the project manager's perspective, quality management is ______________ limited to assessing the attributes of the tools provided to do the work.

A. always
B. usually
C. not
D. seldom
Answer» D. seldom
109.

Lot tolerance percent defective (LTPD) is a level of lot quality specified by the ______________.

A. Consumer
B. Producer
C. Supplier
D. Sampling Plan
Answer» B. Producer
110.

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» C. 6mm, 8mm
111.

Reliability of product means i. Consistency of performance ii. Performance over period iii. Free of technical errors The correct order is

A. i & iii
B. i & ii
C. ii & iii
D. i, ii & iii
Answer» E.
112.

Common features of CMM is how to produce software product which are i. Consistence ii. Repeatable iii. Predictable The correct order is

A. i only
B. ii only
C. ii & iii
D. i, ii & iii
Answer» E.
113.

In one-way ANOVA, which of the following is used within the F-ratio as a measurement of the variance of individual observations?

A. The Sum of Square of Treatments (SSTR)
B. The Treatment Mean Square (MSTR)
C. The Residual Sum of Squares (SSE)
D. The Mean Sum of Squares (MSE)
Answer» D. The Mean Sum of Squares (MSE)
114.

If the Mean Square Error MSE of an ANOVA for six treatment groups is known, you can compute

A. degrees of freedom, df1
B. the standard deviation of each treatment group
C. the pooled standard deviation
D. all answers are correct
Answer» D. all answers are correct
115.

The ______________ sum of squares measures the variability of the observed values around their respective treatment means.

A. treatment
B. error
C. interaction
D. total
Answer» C. interaction
116.

What would the levels of the independent variables be for a two-way ANOVA investigating the effect of four different treatments for depression and gender?

A. 4 and 1
B. 2
C. 4 and 2
D. 6
Answer» D. 6
117.

In a study, subjects are randomly assigned to one of three groups: control, experimental A, or experimental B. After treatment, the mean scores for the three groups are compared. The appropriate statistical test for comparing these means is:

A. the correlation coefficient
B. chi square
C. the t-test
D. the analysis of variance
Answer» E.
118.

For an ideal OC curve the probability of acceptance for lot fraction defective less than .01 is ______________.

A. Equal to 1
B. Less than 1
C. Greater than 1
D. 0
Answer» B. Less than 1
119.

______________ diagram is used for identifying potential relationship between two variables.

A. Pareto
B. Ishikawa
C. Histogram
D. Scatter
Answer» E.
120.

______________ is a graphic tool for defining the relationship between customer desires and the firm/product capabilities.

A. House of Quality
B. Affinity diagram
C. Arrow diagram
D. None of the give option
Answer» B. Affinity diagram
121.

When conducting a one-way ANOVA, the ______________ the between-treatment variability is when compared to the within-treatment variability, the ______________ the FValue calculated from the data will tend to be.

A. smaller, larger
B. smaller, smaller
C. larger, larger
D. smaller, larger
Answer» C. larger, larger
122.

You have carried out a Kruskal-Wallis test. There are significant differences between the three groups you are testing. How might you conduct your pair wise comparisons?

A. Use the Mann Whitney test
B. Use the Wilcox on test
C. Use a t-test
D. None of the above. Post hoc analyses cannot be carried out with non parametric data
Answer» B. Use the Wilcox on test
123.

In a project, the common parameters are cost, schedule, and quality. In relationship to the others, quality should be ranked ______________.

A. first as the prime driver for a project
B. second behind cost but ahead of schedule
C. second behind schedule but ahead of cost
D. equal to cost and schedule
Answer» E.
124.

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» B. Proportion acceptable
125.

The discrete random variable X has the probability function (k is a constant): Answer question 8 - 10 based on the information given above. The value of k is:

A. 1 point
B. 1/18
C. 1/12
D. 1/6
Answer» C. 1/12
126.

This means that for every unit increase in your independent variable, your dependent variable increases b 0.478 units What degrees of freedom do you report in a multiple regression?

A. Residual degree of freedom
B. Error and residual degree of freedom
C. Regression and residual degrees of freedom
D. Adjusted R squared and regression degrees of freedom
Answer» D. Adjusted R squared and regression degrees of freedom
127.

A serious problem can occur in multiple regression analysis if an important variable is omitted from the list of independent variables. This can lead to

A. Unbiased least squares estimators.
B. Biased least squares estimators.
C. A biased estimator of the variance.
D. All of these
Answer» C. A biased estimator of the variance.
128.

Quality assurance is defined as the managerial process that determines ______________ that provide the customers with performance standards and feedback on the performance.

A. time, scope, cost, and resources
B. human resources, dollars, materials, and duration
C. time, location, duration, and completion
D. organization, design, objectives, and resources
Answer» E.
129.

Quality control is the technical processes that ______________ the project's progress against the performance standards.

A. inspect, certify, and verify
B. examine, analyze, and report
C. inspect, examine, and determine
D. identify, measure, and report
Answer» C. inspect, examine, and determine
130.

Quality is one part of the three major parameters of a project. When the quality in a project exceeds the specifications, that is called ______________.

A. excellence
B. superior quality
C. deviation plus quality
D. gold plating
Answer» D. gold plating
131.

The Pareto Principle is a technique used by quality managers to determine which quality control problems concerning a particular service or manufacturing process should be corrected. Which of the following statements best represents the philosophy employed by this principle?

A. In order to minimize financial losses from quality control problems, all problems which have a measurable cost associated with them should be corrected
B. The majority of defects are caused by a small percentage of the identifiable problems. Improvement efforts should be reserved for those few vital problems
C. In order to achieve zero defects, all quality control problems, including those which do not have a direct financial cost should be corrected
D. Generally, 80% of the quality control problems are justifiable for correction via cost benefit analysis. The remaining 20% are not financially worthy of improvement efforts
Answer» C. In order to achieve zero defects, all quality control problems, including those which do not have a direct financial cost should be corrected
132.

Quality control includes inspections to ensure the standards of performance are being met. Inspection includes ______________ examinations of ______________.

A. visual and non-visual; processes and components
B. visual and aural; processes and materials
C. visual and technical; material and end products
D. aural and tactile; materials and end products
Answer» D. aural and tactile; materials and end products
133.

Factorial designs allow us to study both ______________ effects of the independent variables on the dependent variables.

A. main and interactive
B. dependent and independent
C. symbiotic and dichotomous
D. rank order and correlation
Answer» B. dependent and independent
134.

Dr. RNS conducted a ______________ factorial design to examine the effects of music and room temperature on participant's memory. Participants were randomly assigned to study a list of nonsense words either listening or not listening to music in either a warm or cold room.

A. 1 x 2
B. 2 x 4
C. 2 x 2
D. 4 x 4
Answer» C. 2 x 2
135.

If a researcher planned to have 20 participants in each condition of a 2 x 3 independent group s factorial design, how many participants would be needed for this experiment?

A. 40
B. 60
C. 80
D. 120
Answer» E.
136.

If the level of confidence directly increases as a result of new processes, different resources, or changed methods, the required cost of monitoring is likely to:

A. increase as well
B. remain the same
C. decrease
D. decrease initially then increase slightly
Answer» D. decrease initially then increase slightly
137.

A histogram ordered by frequency of occurrence that shows how many results were generated by each identified cause is:

A. Statistical Histogram
B. Juran Histogram
C. Fishbone Diagram
D. Pareto Diagram
Answer» C. Fishbone Diagram
138.

Statistical sampling is a method to determine the conformance to requirement for some element or product of a project. The advantage of statistical sampling is that it ______________.

A. does not require an expenditure of resources
B. is accurate enough with a sampling of less than one percent
C. does not require 100 percent sampling of the elements to achieve a satisfactory inference of the population
D. needs to be conducted only when there is a problem discovered with the end product or when the customer has some rejects
Answer» D. needs to be conducted only when there is a problem discovered with the end product or when the customer has some rejects
139.

Statistical sampling methods are valid for most projects, regardless of the lack of repetitive processes, because ______________.

A. projects rely on external vendors for products that must meet contractual specifications to conform to the requirements
B. purchased materials will never meet the requirements of the project
C. services are amenable to statistical sampling even for small lots
D. it looks good to the customer when there is a mathematical approach to quality
Answer» B. purchased materials will never meet the requirements of the project
140.

The quality management tool that can be described as "a diagram that rank and displays defects in order of frequency of occurrence (from left to right)" is a:

A. control chart
B. vertical bar chart
C. histograms
D. Pareto chart
Answer» E.
141.

Consider two factors A and B, each with two levels. If there is no interaction between these two factors, the difference in the response variable between the two levels of factor A would be ______________ the difference between the two levels of factor B.

A. unrelated to
B. equal to
C. half
D. twice
Answer» C. half
142.

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» C. D1 d2>c2
143.

Which of the following was developed by Motorola to improve its processes by minimizing defects?

A. ISO 9000
B. Six sigma
C. QS 9000
D. TQM
Answer» C. QS 9000
144.

Processes that operate with "six sigma quality" over the short term are assumed to produce long-term defect levels below ______________ defects per million opportunities (DPMO).

A. 2
B. 2.4
C. 3
D. 3.4
Answer» E.