What does inspection for variables involve?

Measuring one or more quality characteristics of the part or product

Deciding whether a part or product conforms to the accepted quality standard

What is required for inspection for variables?

Appropriate measuring instrumentation

What does inspection for attributes sometimes involve?

Measuring one or more quality characteristics of the part or product

Using appropriate measuring instrumentation

What is the purpose of measuring the temperature of a toaster oven in an inspection for variables?

To verify it is within the range specified by design engineering

To ensure it is energy efficient

To measure the size of the oven

What is being counted during the inspection for attributes as an automobile leaves the final assembly plant?

The number of people in the assembly plant

The number of inspections completed

What does the Examination step in the Inspection Procedure involve?

Measuring or gauging a quality characteristic and searching for defects

Accepting or rejecting the item

Adjusting the manufacturing process

Deciding whether the item can be reworked

If an item is rejected during the Inspection Procedure, what additional action may be considered?

Adjustments in the manufacturing process.

The item is automatically discarded.

The item is accepted with defects.

Which of the following is NOT listed as a key characteristic (KC) to inspect?

Color consistency of painted surfaces

Matching dimensions of assembled components

Surface roughness on bearing surfaces

Straightness and concentricity of high-speed rotating shafts

Why is it unnecessary to inspect every feature of a product?

Because certain features are more important than others

Because it is too time-consuming

Because products do not have many features

Because all features are equally important

What is one of the key characteristics that should be inspected according to the text?

Finishes of exterior surfaces on consumer products such as cars

Electrical conductivity of the product

Thermal resistance of the product

What is a Type I error in the inspection procedure?

When a good item is classified as defective

When a defective item is correctly identified as defective

When a defective item is classified as good

When a good item is correctly identified as good

What is a Type II error in the inspection procedure?

When a defective item is classified as good

When a defective item is correctly identified as defective

When a good item is classified as defective

When a good item is correctly identified as good

What is one of the reasons why errors occur in manual inspection?

Complexity of the inspection task

What can cause inaccuracies in manual inspection according to the provided material?

Inaccuracies in the measuring or gaging instruments

Miscommunication among team members

What is one of the reasons why errors occur in automated inspection?

Complexity of the inspection task

Inadequate training of personnel

Insufficient lighting in the inspection area

Which factor related to inspection sensors can lead to errors in automated inspection?

Resolution of the inspection sensor

What is a software-related cause of errors in automated inspection procedures?

"Bugs" in the computer program controlling the inspection procedure

What does p1 represent in measures of inspection accuracy?

Probability that a conforming item is classified as nonconforming

Probability that a nonconforming item is classified as conforming

What does p2 represent in measures of inspection accuracy?

Probability that a nonconforming item is classified as conforming

Probability that a conforming item is classified as nonconforming

What does the actual fraction defect rate (q) represent in the context of inspection accuracy?

The actual rate of defects in the items being inspected

Probability that a nonconforming item is classified as conforming

Probability that a conforming item is classified as nonconforming

What is the purpose of inspection in quality control?

To assess the quality of a part or product relative to design specifications

To assess the functional aspects of the product

To observe the item during actual operation

To test the product's operation in extreme conditions

What does testing assess in a product?

The functional aspects of the product

The quality of a part relative to design specifications

The color and design of the product

During QC testing, when is the item observed?

During actual operation or under conditions that might be present during operation

Before the product is assembled

After the product is shipped to the customer

Only in controlled laboratory conditions

What is variables sampling in the context of Sampling Inspection?

B) The method where the mean value of the quality characteristic of interest is compared to an allowed value

A) The process where the number of defects is compared to an acceptance number

C) The technique where the total cost of inspection is calculated

D) The procedure where the batch is automatically accepted if it meets minimum standards

Under what condition is a batch rejected in variables sampling?

C) If the mean value of the quality characteristic compares unfavorably to the allowed value

A) If the batch meets the minimum quality standards

B) If the mean value of the quality characteristic is above the allowed value

D) If the number of defects is less than the acceptance number

What is attributes sampling?

C) A technique where the number of defects in the sample is compared to an acceptance number

A) A method to determine if the batch meets the mean value of quality

B) A process to check the total number of items produced

D) A procedure to ensure that all batches are of high quality

When is a batch rejected in attributes sampling?

C) When the number of defects in the sample is greater than the acceptance number

A) When the number of defects in the sample is less than the acceptance number

B) When the number of defects in the sample is equal to the acceptance number

D) When the quality level of the batch is confirmed to be high

How is the allowed value or acceptance number chosen in attributes sampling?

C) So that the probability of rejecting the batch is small unless the quality level is indeed poor

A) Based on the maximum number of defects permissible

B) So that the probability of accepting the batch is high

D) Randomly to simplify the inspection process

Chapter 21 Practice

Authored by Casey Robinson

Science

12th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the traditional method of accomplishing inspection to detect poor quality and assure good quality?

Automated machine learning algorithms

Labor-intensive methods

Outsourcing to third-party agencies

Customer feedback analysis

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

When is manual inspection usually performed?

Before the parts are made

After the parts are made

During the design phase

Before the product is shipped

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the consequence of producing a defective product during regular processing according to the text?

The product is immediately improved

It is too late to correct during regular processing

The product is sold at a discount

The product passes inspection regardless

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What must be done to defective parts that are already made?

They must be returned to the supplier

They must be installed as they are

They must be scrapped or reworked

They must be used for training purposes

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is one of the new QC approaches to address problems in automated inspection?

50% automated inspection and 50% manual inspection

100% manual inspection

100% automated inspection rather than sampling inspection using manual methods

Automated inspection only for finished products

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which system is used for inspection during or immediately after processing?

Off-line sensor systems

On-line sensor systems

Pre-line sensor systems

In-line manual inspection systems

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is used for feedback control of sensor data in manufacturing processes?

Software tools for SPC

Hardware tools for SPC

Manual feedback systems

Automated machine adjustment

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Chapter 21 Practice

What is the traditional method of accomplishing inspection to detect poor quality and assure good quality?

When is manual inspection usually performed?

What is the consequence of producing a defective product during regular processing according to the text?

What must be done to defective parts that are already made?

What is one of the new QC approaches to address problems in automated inspection?

Which system is used for inspection during or immediately after processing?

What is used for feedback control of sensor data in manufacturing processes?

Which of the following is an example of advanced inspection and sensor technology?

What does inspection for variables involve?

What is required for inspection for variables?

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