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DMAIC Processes Exam Questions and Correct Answers Latest 2025

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Test Bank for Semiconductors - Questions and Correct Answers Latest Update 2025 How is a nonconducting diode biased? - Answers Reverse When the diode current is large, the bias is - Answers Forward A pure semiconductor is often referred to as a(n) - Answers intrinsic semiconductor An n-type semiconductor is a semiconductor that has been doped with - Answers pentavalent impurity atoms In a p-type semiconductor, the majority current carriers are - Answers holes In a n-type semiconductor, the current carriers are - Answers electrons To forward bias a diode, - Answers the anode voltage must be positive with respect to its cathode. A reverse-biased diode acts like a(n) - Answers open switch. The process of adding impurities to an intrinsic semiconductor is called - Answers doping How many p-n junctions does a BJT transistor have? - Answers 2 In a npn transistor, the majority carriers in the emitter are - Answers valence electrons The emitter diode is usually - Answers forward biased Who invented the first junction transistor - Answers Schockley What is one important thing a transistor does - Answers amplify weak signals The Beta of a transistor is the ratio of - Answers collector current to base current In a pnp transistor, the majority carriers in the emitter are - Answers holes If the Base current is 100mA and the Beta is 30, what is the collector current? - Answers 3A What is the most important fact about collector current? - Answers It is approximately equal to the emitter current The three terminals of a bipolar transistor are called - Answers base, emitter, collector In a pnp transistor, the p regions are - Answers emitter and collector The Β(DC) of a transistor is - Answers current gain The h(FE) of a transistor is - Answers current gain The h(FE) of a transistor is also known as - Answers Beta DC When a operated in cutoff and saturation, the transistor acts like a - Answers Switch When operated in the active region, the transistor acts like a - Answers linear amplifier In saturation, V(CE) is - Answers minimum In cutoff, V(CE) is - Answers Maximum In cutoff, I(C) is - Answers 0 In saturation, I(C) is - Answers Maximum Once in saturation, a further increase in base current will - Answers not affect the collector current Which Class of amplifier is most efficient? - Answers Class C The BJT amplifier with the highest power gain is usually the _________ amplifier. - Answers Common Emitter The BJT amplifier with the highest current gain is usually the _________ amplifier. - Answers Common Collector The common emitter amplifier has - Answers voltage gain, current gain, and power gain Common collector amplifier ac input and output currents are - Answers always in phase Common emitter amplifier ac input and output currents are - Answers always 180 degrees out of phase A common collector amplifier provides ____ gain. - Answers current A common base amplifier is typically used for - Answers Impedance matching A common collector amplifier has a - Answers a voltage gain of less than one Why is midpoint bias desirable for most amplifiers? - Answers It allows optimum ac operation of the circuit

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DMAIC Processes
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DMAIC Processes

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DMAIC Processes Exam Questions and Correct Answers Latest 2025

What is a Green Belts role? - Answers are the project leaders, they formulate and assist the Six Sigma
team and see it through commencement of the project to its completion. Work part time on the chosen
projects

What is DMAIC? - Answers Data driven processes.

Defining the aims

Measuring the current procedure

Analyzing the current procedure to remove loopholes between the current procedure and the aimed
results

Improving on the current procedure and finding innovative techniques

Controlling improved performances

What happens in the Define phase? - Answers In this stage goals of any project and its customer
deliverables are defined.

it identifies the inherent problems in the system and develops a problem statement.

the goal of implementing Six Sigma and its benefit to that particular organization.

The strategic organizational support for that particular project is evaluated.

The project plan and its milestones are developed. This also covers process mapping and flowcharting,
project charter development, problem solving tools, and the 7M tools.

Measure Phase - Answers measures the existing system for defects, opportunities, units and metrics. It
establishes statistical process control techniques and data analysis methods. It also develops a data
collection plan to measure the defects; and it helps in monitoring the progress of the project towards
the defined goals. This phase covers the principles of measurement, studies of continuous and discrete
data, graphical analysis techniques, basic capability indices, and so forth.

Analysis Phase - Answers working on the data generated from the various methods provided in the
measure phase, and analyzing the defects by trying to reach the root cause. This phase uses various data
analysis techniques to analyze the generated data. Here the system tries to pinpoint the deviation from
the identified goals and identify the sources of these variations.



The various statistical techniques used are Statistical Process Control Techniques, Process Capability
Analysis, Statistical analysis of cause and effect relationship using regression and correlation, chi-square
tables, specialized control charts and so forth.

, Improve Phase - Answers the analysis is used to improve the existing system by removing the identified
flaws. It is used to generate new, innovative, and cost effective solutions and ideas to the problem and
implement them. The results for the defined problem may be statistically evaluated to solve the flaw.
The process is then optimized based on the analysis using various Design of Experiments methods like
ANOVA, and process optimization.

Control Phase - Answers In this phase, the improvements have to be controlled, to keep the
standardized process on its new course. A strategy has to be developed to prevent the process from
reverting to the previous way. This requires development, documentation, and implementation of the
new plan. After this, trial runs to establish process capability have to be conducted, which help in the
transition of the planned process to production. Finally, the process with the instituted control
mechanisms needs to be continually measured.



This phase covers process control planning, using SPC (Statistical Process Control) for operational control
and pre-control.

Define Phase Objectives - Answers Develop a team/project charter

Identify the customers for the project, their needs and requirements

Identify which critical to quality factors are considered

The execution of any project consists of three important elements. They are: - Answers Project Charter

Identification of the customer

Making a high level process map

What does the Project Charter contain? - Answers The Business Case

The Problem it is Addressing

The Project Scope

Project Leader (Black Belt/Green Belt)

The Mentor/Master Black Belt

Project Commencement Date

Projected Project Conclusion Date

Who developed the kano model? - Answers A Japanese researcher, Noritaki Kano, developed the Kano
model of customer satisfaction.

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