Asvab study guide torrent download

I will highly recomend this study guide to anyone in need of help studying for the ASVAB, I have only had it for a few days and I already see a tremendous amount of improvement in my practice tests. This book gives helpful tips on test taking which has always been something I've struggled with, but not anymore!

Throughout this study guide you get help with every part of the ASVAB and it has a practice test for each part, which is extremely helpful to me because it shows me what I retained well and what I need to work on still. This book has helped me well above my expectations. I would suggest this book to everyone considering joining the military service. This study guide is what it claims to be Some study guides give you a lot of stuff you don't really need just to make themselves look thicker and fuller.

And then you have to waste a lot of time weeding through it all trying to figure out what's good and what's padding. This guide has the information you need and that's that. It's really comprehensive, though, and doesn't leave things out at the same time. An automatic transmission is essentially an automatic gear shifter and handles this process without driver input. A differential is designed to drive a pair of wheels while allowing them to rotate at different speeds.

A transaxle is a transmission that incorporates the differential in one package. Most front-wheel drive cars use a transaxle while rear-wheel drive cars use a transmission and separate differential connected via a drive shaft. The differential is incorporated into the drive axle which splits engine power delivered by the drive shaft between the two drive wheels. All-wheel drive cars typically use a transaxle that includes an output shaft to the rear differential.

A half shaft is a drive axle that extends from a transaxle or differential to one of the drive wheels. There are two half shafts per drive axle, one for each wheel, each doing "half" the job. Constant velocity CV joints are located at both ends of a half shaft and their purpose is to transfer the torque from the transmission to the drive wheels at a constant speed while accomodating the up and down movement of the suspension. The inner CV joint connects the shaft to the transmission and the outer CV joint connects the shaft to the wheel.

Like CV joints, universal joints U-joints are located at each end of a drive shaft and allow the shaft to operate at a variable angle with the item it is driving.

Universal joints perform the same basic function as CV joints but CV joints have a wider range of operation. The transfer case splits engine power between the front and rear axles of four-wheel drive vehicles. Most modern cars use an independent suspension system on the front wheels. This setup allows each of the wheels on an axle to move independently in response to road level variations. Independent suspension offers much better handling and stability when compared to a rigid axle suspension at the cost of being structurally weaker and more costly to maintain.

Suspension springs are made with wide gap coils of rigid steel cable and both hold the vehicle chassis up off the ground and absorb energy from wheel movement making for a smoother ride. Struts combine the spring and shock into one unit. Control arms upper and lower connect a vehicle's suspension to the frame. The connection to the wheels is through ball joints which allow the control arms to turn and move up and down simultaneously.

The frame connection uses bushings. The steering linkage is a system of pivots and connecting parts between the steering gear and the control arms. The steering linkage transfers the motion of the steering gear output shaft to the steering arms that turn the wheels. The wheel hub is the mounting point for the wheel and tire assembly. The wheel hub can rotate while being held stable by the steering knuckle which applies the motion of the control arms to the wheels. The master brake cylinder converts pressure on the brake pedal to hydraulic pressure in the brake lines.

The fluid reservoir stores the brake fluid that the master cylinder uses to maintain hydraulic pressure. Brakes utlize friction to slow vehicle tires.

Drum brakes employ a cast iron drum that roates with the vehicle axle. When hydraulic pressure is applied to the brake assemblies at the wheels, internal pistons expand and push brake shoes outward into contact with the brake drum slowing the rotation of the axle.

More powerful disc brakes operate by pinching a rotating disc betweeen two brake pads and allow for a larger surface area to contact the disc, provide more force, and are more easily cooled. Power brakes multiply the force a driver applies to the brake pedal using a vacuum booster connected to the engine intake manifold. This provides for much higher hydraulic pressure in the braking system than could be generated by the driver alone.

Antilock brakes ABS use speed sensors and adjust the brake pressure at each wheel to prevent skidding and allow the driver more steering control in slippery conditions. All electricity is the movement of electrons which are subatomic particles that orbit the nucleus of an atom. Electrons occupy various energy levels called shells and how well an element enables the flow of electrons depends on how many electrons occupy its outer valence electron shell. Conductors are elements that allow electrons to flow freely.

Their valence shell is less than half full of electrons that are able to move easily from one atom to another. Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another. Semiconductors have valence shells that are exacly half full and can conduct electricity under some conditions but not others. This property makes them useful for the control of electrical current. Current is the rate of flow of electrons per unit time and is measured in amperes A.

A coulomb C is the quantity of electricity conveyed in one second by a current of one ampere. Voltage V is the electrical potential difference between two points. Electrons will flow as current from areas of high potential concentration of electrons to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.

One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.

All conductors have resistance and the amount of resistance varies with the element. But, resistance isn't the only consideration when choosing a conductor as the most highly conductive elements like silver and gold are also more expensive and more brittle than slightly less conductive elements like copper.

A balance needs to be struck between the electrical qualities of a material and its cost and durability. In addition to measuring production capacity, power also measures the rate of energy consumption and many loads are rated for their consumption capacity.

For example, a 60W lightbulb utilizes 60W of energy to produce the equivalent of 60W of heat and light energy. A load is a source of resistance that converts electrical energy into another form of energy. The components of a microwave, for example, are loads that work together to convert household electricity into radation that can be used to quickly cook food. A closed circuit is a complete loop or path that electricity follows. It consists of a source of voltage, a load, and connective conductors.

If the circuit is interrupted, if a wire is disconnected or cut for example, it becomes an open circuit and no electricity will flow. A series circuit has only one path for current to flow. In a series circuit, current I is the same throughout the circuit and is equal to the total voltage V applied to the circuit divided by the total resistance R of the loads in the circuit.

The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit. In a parallel circuit, each load occupies a separate parallel path in the circuit and the input voltage is fully applied to each path. Unlike a series circuit where current I is the same at all points in the circuit, in a parallel circuit, voltage V is the same across each parallel branch of the circuit but current differs in each branch depending on the load resistance present.

Circuits are not limited to only series or only parallel configurations. Most circuits contain a mix of series and parallel segments. A good example is a household circuit breaker. Electrical outlets in each section of the house are wired in parallel with the circuit breaker for that section wired in series making it easy to cut off electricity to the parallel parts of the circuit when needed.

Connecting batteries in series combines their voltage while keeping their current the same, connecting batteries in parallel combines their current while keeping their voltage the same, and using a series-parallel configuration, half the batteries can be connected in series and half in parallel to combine both voltage and current. Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive.

A common source of direct current DC is a battery. In contrast to the constant one-way flow of direct current, alternating current changes direction many times each second.

Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances.

Fuses are thin wires that melt when the current in a circuit exceeds a preset amount. They help prevent short circuits from damaging circuit components when an unusually large current is applied to the circuit, either through component failure or spikes in applied voltage. Like fuses, circuit breakers stop current flow once it reaches a certain amount. They have the advantage of being reusable fuses must be replaced when "blown" but respond more slowly to current surges and are more expensive than fuses.

Capacitors store electricity and are used in circuits as temporary batteries. Capacitors are charged by DC current AC current passes through a capacitor and that stored charge can later be dissipated into the circuit as needed. Capacitors are often used to maintain power within a system when it is disconnected from its primary power source or to smooth out or filter voltage within a circuit.

A diode allows current to pass easily in one direction and blocks current in the other direction. Diodes are commonly used for rectification which is the conversion of alternating current AC into direct current DC. Because a diode only allows current flow in one direction, it will pass either the upper or lower half of AC waves half-wave rectification creating pulsating DC. Multiple diodes can be connected together to utilize both halves of the AC signal in full-wave rectification.

The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material making it a solid state device and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator.

A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.

A thermocouple is a temperature sensor that consists of two wires made from different conductors. The junction of these two wires produces a voltage based on the temperature difference between them. A moving electric current produces a magnetic field proportional to the amount of current flow. This magnetic field can be made stronger by winding the wire into a coil and further enhanced if done around an iron containing ferrous core. An inductor is coiled wire that stores electric energy in the form of magnetic energy and resists changes in the electric current flowing through it.

If current is increasing, the inductor produces a voltage that slows the increase and, if current is decreasing, the magnetic energy in the coil opposes the decrease to keep the current flowing longer.

In contrast to capacitors, inductors allow DC to pass easily but resist the flow of AC. A transformer utilizes an inductor to increase or decrease the voltage in a circuit.

AC flowing in a coil wrapped around an iron core magnetizes the core causing it to produce a magnetic field. This magnetic field generates a voltage in a nearby coil of wire and, depending on the number of turns in the wire of the primary source and secondary coils and their proximity, voltage is induced in the secondary coil. Found in both animal sources meat, fish, eggs, cheese and vegetables beans, nuts, some grains , proteins are important for the body's maintenance, growth, and repair.

Carbohydrates are major sources of energy for the body and are found in sugars fruit, cane sugar, beets and starches bread, rice, potatoes, pasta. Like carbohydrates, fats provide energy to the body. The difference is energy from fats tends to be longer burning as opposed to the quick fuel provided by carbohydrates. Fats come in three types, saturated meats, shellfish, eggs, milk , monounsaturated olives, almonds, avocados , and polyunsaturated vegetable oils.

Saturated fats can raise LDL "bad" cholesterol while unsaturated fats can decrease it. Small quantities of certain minerals like iron, calcium, magnesium, and salt are important for nutrition and health. Vitamins are necessary for a wide variety of bodily processes. Some vitamins like Vitamins A and C come from diet but others, like Vitamin D, are generated in response to sunlight. Fiber provides bulk to help the large intestine carry away waste. Good sources of fiber are leafy vegetables, beans, potatoes, fruits, and whole grains.

A diet lacking healthy amounts of necessary nutrients can lead to a variety of health conditions and diseases. Examples include anemia which is caused by a lack of iron and scurvy which is caused by a lack of Vitamin C. An exoskeleton external skeleton is common in arthropods like insects, spiders, and crustaceans.

Hard bones provide primary support for the endoskeleton while more flexible cartilage is found at the end of all bones, at the joints, and in the nose and ears. In addition to providing support and protecting bodily organs, bones also produce blood cells and store minerals like calcium. Tough fibrous cords of connective tissue called tendons connect muscles to the skeleton while another type of connective tissue called ligaments connect bones to other bones at joints elbow, knee, fingers, spinal column.

The respiratory system manages respiration which is the process by which blood cells absorb oxygen and eliminate carbon dioxide. After air enters through the nose, it passes through the nasal cavity which filters, moistens, and warms it. Further filtering takes place in the pharynx , which also helps protect against infection, and then in the trachea which is just past the epiglottis , responsible for preventing food from entering the airway.

The trachea branches into the left and right bronchi which each lead to a lung where the bronchi subdivide into smaller tubes called bronchioles. Each bronchiole ends in a small sac called an alveolus which allows oxygen from the air to enter the bloodstream via tiny blood vessels called capillaries. The diaphragm is a system of muscles that allows breathing.

During inhalation, the diaphragm expands and air rushes in to fill the space created. Then, during exhalation, the diaphragm contracts and forces the air back out. Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide.

In addition, the circulatory system transports nutrients from the digestive system. The heart is the organ that drives the circulatory system.

In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart. The two largest veins in the body, the venae cavae , pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.

When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.

The aorta is the body's largest artery and receives blood from the pulmonary vein via the left ventricle. From there, blood is circulated through the rest of the body through smaller arteries called arterioles that branch out from the heart.

Finally, blood is delivered to bodily tissues through capillaries. Veins carry blood back to the heart from the body. While arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood. Like the heart, veins contain valves to prevent blood backflow.

Capillaries are small thin-walled vessels that permit the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and the body's cells. This process of exchange is called diffusion. Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot. Blood is categorized into four different types A, B, AB, and O based on the type of antigens found on the outside of the red blood cells.

Additionally, each type can be negative or positive based on whether or not the cells have an antigen called the Rh factor. Blood transfer is limited by the type and Rh factor of the blood. Someone who has Rh-factor negative blood cannot receive blood with a positive type but a person with Rh-factor positive type blood can receive Rh-negative blood. Type O negative blood is the universal donor because it can be given to a person with any blood type. Type AB positive is the universal recipient meaning someone with this blood type can receive any other type of blood.

Digestion begins in the mouth where the teeth and tongue break down food mechanically through chewing and saliva, via the enzyme salivary amylase , starts to break starches down chemically. From the mouth, food travels down the esophagus where contractions push the food into the stomach.

Food is mixed with gastric acid and pepsin in the stomach to help break down protein. The small intestine is where most digestion takes place. As food travels along the small intestine it gets broken down completely by enzymes secreted from the walls. These enzymes are produced in the small intestine as well as in the pancreas and liver.

After the enzymes break down the food, the resulting substances are then absorbed into the blood via capillaries in the small intestine walls. The acids produced by the pancreas contain several enzymes that aid in digestion.

Lipase converts fat to glycerol and fatty acids. Pancreatic amylase breaks down complex carbohydrates into simple sugars. Trypsin converts polypeptides the building blocks of protein into amino acids.

The large intestine colon follows the small intestine and processes the physical waste produced by digestion, absorbing water and minerials that remain back into the body. Solid waste is then stored in the rectum while liquid waste is stored in the bladder. Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine.

Urine is transported from the kidneys to the bladder through ureters. The nervous system consists of the brain and spinal cord central nervous system and the peripheral nervous system which is the network of nerve cells neurons that collect and distribute signals from the central nervous system throughout the body.

The cerebrum is the major part of the brain and is responsible for the main senses thinking, hearing, seeing. The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.

Part of the brainstem, the medulla is the connection between the brain and the spinal cord. It controls involuntary actions like breathing, swallowing, and heartbeat.

The spinal cord connects the brain to the body's network of nerves. It carries impulses between all organs and the brain and controls simple reflexes. Part of the peripheral nervous system, the somatic nervous system is made up of nerve fibers that send sensory information to the central nervous system and control voluntary actions.

Part of the peripheral nervous system, the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines. Approximately every 28 days during female ovulation an egg ovum is released from one of the ovaries and travels through the oviduct fallopian tube and into the uterus. At the same time, the endometrial lining of the uterus becomes prepared for implantation.

During intercourse, the penis ejaculates sperm , produced in the testes , into the vagina. Some of the sperm makes their way to the uterus where, if they encounter an egg to fertilize, unite with the ovum to form a fertilized egg or zygote. The zygote then may implant in the uterus and eventually develop into a fetus. If the ovum fails to become fertilized, the lining of the uterus sloughs off during menstruation.

From puberty to menopause, this cycle of menstruation repeats monthly except during pregnancy. Heredity is the passing on of physical or mental characteristics genetically from one generation to another. Heredity is made possible via large strings of chromosomes which carry information encoded in genes. Reproductive haploid cells known as gametes have half as many 23 pairs of chromosomes as normal diploid cells. When the male gamete sperm combines with the female gamete ovum through meiosis to form a zygote, each gamete supplies half the chromosomes needed to form the normal diploid cells.

Deoxyribonucleic acid DNA is the molecule that contains genetic information. DNA is encoded through a combination of nucleotides that bind together in a specific double helix pattern. The gene is the base unit of inheritance and is contained within DNA. A gene may come in several varieties alleles and there are a pair of alleles for every gene.

If the alleles are alike, a person is homozygous for that gene. If the alleles are different, heterozygous. The traits represented by genes are inherited independently of each other one from the male and one from the female gamete and a trait can be dominant or recessive.

A dominant trait will be expressed when paired with a recessive trait while two copies of a recessive trait one from each parent must be present for the recessive trait to be expressed. A person's genotype is their genetic makeup and includes both dominant and recessive alleles.

Phenotype is how the genes express themselves in physical characteristics. Cells are classified into one of two groups based on whether or not they have a nucleus. Eukaryotic cells have a nucleus, prokaryotic cells do not have a nucleus and therefore have a less complex structure than eukaryotic cells. The nucleus of a eukaryotic cell contains the genetic material of the cell and is surrounded by cytoplasm which contains many organelles. These include:. Animal cells are surrounded by a semipermeable membrane which allows for the transfer of water and oxygen to and from the cell.

In plant cells, the cell membrane is surrounded by a somewhat rigid cell wall which provides the cell structure and support. Some plant cells produce their own energy through photosynthesis which is the process by which sunlight, carbon dioxide, and water react to make sugar and oxygen.

Animal cells cannot produce their own energy and, instead, generate energy when mitochondria consume outside sugar and oxygen through aerobic respiration.

If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen. Cell division is the process by which cells replicate genetic material in the nucleus. Cell division consists of several phases:. The biosphere is the global ecological system integrating all living beings and their relationships.

This includes their interactions with the lithosphere the rigid outer part of the earth, consisting of the crust and upper mantle , hydrosphere all surface water , and atmosphere the envelope of gases surrounding the planet.

A biome is a large naturally occurring community of flora plants and fauna animals occupying a major habitat home or environment. An ecosystem is a biological community of interacting organisms and their physical environment.

This includes both the biotic living and abiotic non-living. A population is a group of organisms of the same species who live in the same area at the same time. A community is a group of populations living and interacting with each other in an area. Producers autotrophs serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis.

Decomposers saprotrophs are organisms such as bacteria and fungi that break down the organic matter in the dead bodies of plants and animals into simple nutrients. Like decomposers, scavengers also break down the dead bodies of plants and animals into simple nutrients. The difference is that scavengers operate on much larger refuse and dead animals carrion. Decomposers then consume the much smaller particles left over by the scavengers.

Most animals consume other organisms to survive. Consumers heterotrophs are divided into three types, primary , secondary , and tertiary , based on their place in the food chain. Primary consumers herbivores subsist on producers like plants and fungus.

Examples are grasshoppers, cows, and plankton. Secondary consumers carnivores subsist mainly on primary consumers. Omnivores are secondary consumers that also eat producers. Examples are rats, fish, and chickens. Tertiary consumers eat primary consumers and secondary consumers and are typically carnivorous predators.

Tertiary consumers may also be omnivores. Examples include wolves, sharks, and human beings. The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria , archaea and eukaryota. Below domain, life is classified into six kingdoms: plants , animals , archaebacteria , eubacteria , and fungi.

Performing poorly on the ASVAB will impact not only your ability to enter the military but can also determine what military job you are qualified for, your advancement opportunities, and even your potential salary.

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. To ensure you get the highest score possible, start preparing now with our comprehensive study guides and free practice tests. Using the right ASVAB study guide is essential to ensure the best possible outcome when preparing for the exam.

Arithmetic reasoning refers to the process of solving math word problems — you know those questions you had in elementary, middle and high school that might involve two trains traveling at different speeds or determining how many different pieces of fruit Tommy brought home from the grocery store. Whether you enjoy these types of problems or dread them, there is a process you can use to make solving them quicker and easier.

Your test administrator will provide you with scratch paper and a number two pencil for this portion of the ASVAB. Calculators are not allowed. If you are taking the pencil-and-paper test, you will 36 minutes to answer 30 questions and if you are taking the computer version, you will have 39 minutes to answer 16 questions. Plus, it has some other great tips like study secrets and test mistakes to avoid.

And even better yet, none of it costs much! And you get it all in one guide. Asvab secrets study guide is terrific.