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The doppler effect is generated when the source or the observer of sound is moving.  When a sound is approaching an observer its frequency appears to increase as it gets closer and change as it passes the observer and moves away.  This characteristic is what makes radar and sonar effective in indicating the size of and distance to an object via measuring reflected sound.
The multiples of a number are the set of numbers formed by multiplying a number by other numbers.  For example, the first five multiples of 3 are {3, 6, 9, 12, 15}.  The least common multiple of two numbers is the smallest number that both numbers factor into evenly.  The first five multiples of of 4 are {4, 8, 12, 16, 20} making the least common multiple of 3 and 4 equal to 12.
Here at ASVABTutor, we provide comprehensive study guides for each section of the ASVAB test that will help you prepare to ace the Armed Forces Vocational Aptitude Battery.  The ASVAB exam is a series of multiple-choice questions broken down into 9 subjects with an emphasis on determining your aptitude in four primary areas: Math, Verbal, Science and Technical, and Spatial. 

There are different minimum AFQT score requirements for enlisting in the Army, Navy, Marines, Air Force, and Coast Guard, although requirements will vary depending upon whether you have a high school diploma or a GED. Minimum score requirements change on a fairly regular basis, with higher scores being required during times of above-average enlistment levels. Enlistment bonuses, which are determined by your choice of military occupation, may also be influenced by AFQT scores.
A signalman handles visual communications between ships at sea. This job requires the same aptitudes as the yeoman above, but with an added dimension of Coding Speed (CS) from your ASVAB score. Or instead replace a yeoman’s Mathematics Knowledge with Arithmetic Reasoning (AR), and you can be on your way to becoming a mess specialist who does the cooking for the fleet.
Trends in recruiting 1975–2001 showing total numbers of enlisted recruits in all branches of US armed forces in light blue and percentage of recruiting goals met in dark blue. Percentage of recruits with at least a high school diploma is shown in gold, percentage with an above average AFQT in orange, and the percentage called "high quality", with both a diploma and above-average AFQT score, is in purple.[1]
Don’t let the PC section of the test throw you for a loop. Unlike the individual multiple choice questions in other sections, here you will need to read a paragraph and answer several questions in a row based on that one paragraph. The people who designed this section of the exam really knew how to make sure you are able to read detailed (and often boring) documents, remember the details of what you read, understand why they’re important, and be able to pick out the key concepts they illustrate. When you read each paragraph, it’s helpful to know the kinds of questions you’ll be asked at the end. There are basically four kinds of questions to test your comprehension:
Understanding the latest test-taking strategies is essential to preparing you for what you will expect on the exam. A test taker has to not only understand the material that is being covered on the test, but also must be familiar with the strategies that are necessary to properly utilize the time provided and get through the test without making any avoidable errors. Test Prep Books has drilled down the top test-taking tips for you to know.
The exam is not a “pass or fail” test. Your score in each area reflects your own unique abilities. Of course, you will want to study with the aim of doing your best so that you can qualify for a job that fits your skills and career interests. Your AFQT score is compared to the scores of other recruits in the 18-23 year age bracket to see how your potential measures up.

AFQT (Armed Force Qualification Test) score: This score is reported in the form of a percentile rank and is calculated by adding the scores that you have received for the 4 sub-tests, viz, Mathematics Knowledge, Arithmetic Reasoning, Paragraph Comprehension and Word Knowledge. The total score that you receive for these sub-tests is then compared to the scores that other candidates taking a similar format of the test have received. Then you receive a percentile rank that can range anywhere from 1 to 99. For example, if you receive a rank of 45 percentile then you have scored more than 45 students, but 55 students have scored more than you.

A signalman handles visual communications between ships at sea. This job requires the same aptitudes as the yeoman above, but with an added dimension of Coding Speed (CS) from your ASVAB score. Or instead replace a yeoman’s Mathematics Knowledge with Arithmetic Reasoning (AR), and you can be on your way to becoming a mess specialist who does the cooking for the fleet.


The AFQT score is a percentile ranking between 1 and 99 that shows where your score is placed in relation to others. For example, if you score a 54 on the AFQT, this means that you scored as well as or better than 54% of other recruits. If you are not satisfied with your score and wish to retake the test to improve your chances at getting selected, you must wait a month before taking it again. You can retake the test as many times as you want, but after 3 attempts the waiting period jumps to 6 months.
Varsity Tutors’ Learning Tools free ASVAB study material is a great opportunity for you to tune up your skills before you take the test. You might discover that you simply have to brush up on some science, math, or definitions to get ready to take the test. The simple ASVAB review tests enable you become more confident as well. There’s no better way to succeed in reaching your goals than by being prepared ahead of time.
Your choice of military career depends on your success on the ASVAB. Those looking to score the highest will use an ASVAB Test Study Guide for an overall review and back this up with a set of ASVAB Test Flashcards to drill down on problem areas. Responsibility is a key value of our nation's military, and the first step is taking responsibility for your own ASVAB preparation.
Also, the answer explanations for all of these problems are very in-depth and detailed. Learning from your mistakes is one of the top ways to learn and this book really allows you to do that. Along with all the practice questions you get an all-inclusive and in-depth subject review on all of the topics included in the exam. Nothing is left out. Because of this, this is the only review book that you will need, no other supplement guides are needed (helping to save you money by only having to buy one guide!).
A resistor is designed to limit the amount of current flowing through a circuit and is used to precisely control the amount of voltage and current present at various points within an electrical circuit.  When current flows through a resistor the resistor produces heat and managing heat within the circuit is a very important design consideration for engineers.
One set of ASVAB scores – Career Exploration Scores – tells you your current strengths in verbal, math, science, and technical skills.  The scores allow you to compare your test performance with that of other students at your grade level and can help you determine your readiness for further education and training in different career areas.  You will also receive a Military Entrance Score that is important for entry into the Armed Services.  You can discuss your score with a military recruiter.
The Armed Forces Classification Test (AFCT) is a paper-based test that is administered to Servicemembers by a test administrator in the command's Educational Services Office for those who desire to increase their score in order to reclassify to a different rating/program. The AFCT is a version of the ASVAB, and it is administered in the same manner as the ASVAB's paper-version.
Whenever possible, military personnel (active duty, National Guard, and reserve) will arrange to take the in-service ASVAB from your service’s Test Control Officer at a military installation; however, on a case-by-case basis, Military Entrance Processing Station (MEPS) commanders may authorize administration of an ASVAB for in-service purposes at their MEPS. You must submit a memorandum from your unit commander requesting the MEPS to administer an ASVAB. The memorandum must include;
Unlike other vocabulary building books which just provide a lengthy list of words and definitions, Barron's organizes 800 words into sentence completion exercises of 10 words at a time which makes integrating these words into your everyday vocabulary much easier than just going down a list and relying on rote memorization. If you have an average vocabulary and and are looking to do well on the ASTB, Barron's Essential Words for the GRE is a great addition to your study material.
Pay close attention to all numbers and figures mentioned within the body of the paragraph. Identify these numbers, set them aside, and identify which of the numbers are relevant and which of the numbers are tossed in for the purpose of throwing you off or misleading you. While paying attention to the numbers, also pay attention to the order. Identifying a 7 and a 9 as the two elements of a word problem is only effective if you are able to correctly identify the proper sequence of the numbers. 9-7 and 7-9 yield two very different results and may be the difference between passing and failing a test.
2016 / 2017 ASVAB For Dummies with Online Practice. ASVAB for Dummies is another great ASVAB book. This is the very latest edition that is updated for 2016 and 2017, and it is packed full of resources. There are in-depth content reviews for each of the nine sections of the test along with practice questions and detailed explanations. Also includes access to an online companion site that has 6 full-length practice exams and hundreds of flashcards.
The ASVAB is taken in two different forms, computerized and written. Even so they test the same information. The sections are as follows, General Science, Arithmetic Reasoning, Word Knowledge, Paragraph Comprehension, Mathematics Knowledge Electronics Information, Automotive and Shop Information, Mechanical Comprehension, Assembling Objects and a Verbal Expression score influenced by the Word Knowledge and Paragraph Comprehension sections of the test. Those looking to join the Navy also complete a Coding Speed test.
One set of ASVAB scores – Career Exploration Scores – tells you your current strengths in verbal, math, science, and technical skills.  The scores allow you to compare your test performance with that of other students at your grade level and can help you determine your readiness for further education and training in different career areas.  You will also receive a Military Entrance Score that is important for entry into the Armed Services.  You can discuss your score with a military recruiter.
As part of your ASVAB prep you should get a good ASVAB study guide. Having the right study material can make a huge difference in your final score. There are a lot of ASVAB books to choose from, and some of them aren’t very good. We have reviewed all of the best study guides and our list includes only the best of the best. These are the highest-rated review books that have stood the test of time. You won’t go wrong with any of these options. These are the ASVAB study guides that we recommend:
There is another ASVAB score that's equally important, if not more so, because it is the score that determines if a person is eligible for military service. It's the Armed Forces Qualification Test score, or AFQT score. This score is calculated from only four of the nine Standard Scores on the ASVAB - Arithmetic Reasoning (AR), Mathematics Knowledge (MK), Paragraph Comprehension (PC), and Word Knowledge (WK). First, the WK and PC scores are added together, then the sum is doubled. This is known as the Verbal Expression (VE) score. The VE, MK, and AR scores are then added together, and the sum is the AFQT. This score is a straight percentile measure, expressed as a number from 1-99. The number is the percentage of people who scored lower than the test taker. For example, if a person receives an AFQT score of 63, that means that he did better on the test than 63% of the people who have taken it.
The adaptive test is exactly what it sounds like, a test that adapts to the test taker. Questions in each section range in difficulty, and based on the test taker’s answers, the question types and difficulties adjust with each answer. This type of test allows for a greater level of accuracy in evaluating a prospect’s abilities. For the most part, correct answers beget more difficult questions while wrong answers will reduce the difficulty of proceeding questions.
A capacitor stores an electric charge using two parallel plates with a a nonconducting material (dielectric) between them.  Capacitors can provide a fixed or variable capacitance in a circuit.  Capacitance is measured in farads (F) and depends on the surface area of the plates (larger means higher capacitance), their distance apart (closer means higher capacitance), and the type of dielectric.
The ASVAB contains 10 subtests, which are grouped under different qualification areas. The AFQT portion of the test includes Word Knowledge, Paragraph Comprehension, Mathematics Knowledge, and Arithmetic Reasoning subtests. A minimum score of 32 on this portion is required to enlist in the Marine Corp for recruits with a high school diploma, and those with a GED must score 50.
Pay close attention to all numbers and figures mentioned within the body of the paragraph. Identify these numbers, set them aside, and identify which of the numbers are relevant and which of the numbers are tossed in for the purpose of throwing you off or misleading you. While paying attention to the numbers, also pay attention to the order. Identifying a 7 and a 9 as the two elements of a word problem is only effective if you are able to correctly identify the proper sequence of the numbers. 9-7 and 7-9 yield two very different results and may be the difference between passing and failing a test.
The Assembling Objects subtest of the Armed Services Vocational Aptitude Battery is designed to measure your ability for visualizing spatial relationships. In this section of the ASVAB you will be required to view pieces of an object and then determine how those pieces fit together. If you’re asking yourself why this ability is important, the answer is because good spatial skills allow people to figure out maps and interpret graphs and technical drawings. For the Assembling Objects subtest you will 15 minutes to solve 16 problems on the CAT-ASVAB test and 16 minutes to solve 25 questions on the paper version of the ASVAB.
My recruiter told me about this book so I ordered it and got it 3 days later from the Military Bookstore. I got this book and it is awesome. The cd works great and every thing I needed and more to help me was in there. I recommend this book to everyone who is thinking of going in the service and wants to get a real job! GET THIS BOOK AND SCORE HIGH!!!!”
The ASVAB (Armed Services Vocational Aptitude Battery) is a test that will evaluate your capacity to become successful military personnel. However, the USA Military Service has a number of wings. Score requirement for each section of the Military Department is different. Hence, understanding your scores is essential, if you want to know, which department of the military you should apply to. 
Note: Active duty Marines must get permission in writing from the Commandant of the Marine Corps before taking the ASVAB (ATTN: HQ Marine Corps, Marsh Center, Manpower and Reserve Affairs (MPP), 3280 Russell Road, Quantico, VA 22134-5103). Marine Corps Individual Ready Reserve (IRR) members and Marine Corps reservists do not need the Commandant’s permission before ASVAB testing at a MEPS. If any military personnel, not including those in the Individual Ready Reserve (IRR), tests at a MET site and not a MEPS, the test will be invalidated.
The Armed Services Vocational Aptitude Battery is more commonly known as the ASVAB Test. If you are interested in a military career, you will need to pass this challenging test in order to qualify. It is used for all branches of the military which includes the Army, Navy, Air Force, Marines, National Guard, and Coast Guard. It is also used to gauge your abilities in specific areas that may be relevant to your job assignments within the military. For more information about the exact details of this exam, check out our article titled What is the ASVAB Test?

The ASVAB Career Exploration Program provides tools developed by the Department of Defense (DoD) to help high school and post-secondary students across the nation learn more about career exploration and planning. Since the mid-1990’s, the ASVAB Career Exploration Program has provided high quality, cost-free career exploration and planning materials and services annually to approximately 14,000 of the nation’s high schools. You can prepare by taking ASVAB Practice Tests – many of which are available online.
Auto and Shop Information tests aptitude for automotive maintenance and repair, and wood and metal shop practices. The test covers several areas commonly included in most high school auto and shop courses, such as automotive components, automotive systems, automotive tools, troubleshooting and repair, shop tools, building materials, and building and construction procedures.
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