Asvab Air force study guide || with 100% Error-free
Answers.
Direct Current (DC) correct answers a steady flowing type of electricity, produced by batteries
and used in flashlights, boom boxes, and computers.
Voltage correct answers Annotated as a capital V, force that affects the rate at which electricity
flows through a conductor (aka: electrical pressure). The higher it is the more likely electricity
will "leak" across an insulator or an air gap.
Resistance correct answers is the opposition of a material to the flow of electricity through it.
ALL circuits must have this. If they do not they are then considered short circuits which can lead
to wires overheating
Amperes correct answers Annotated as a capital A, represents current strength
Ohms correct answers Annotated as Ώ, represents the measurement of the resistance in any
circuit.
Watts correct answers Annotated as a capital W, represents the measurement of power consumed
by an electrical device.
Circuit Rule correct answers Current is the same at all points in a series circuit. Voltage is the
same at all points in a parallel circuit.
Typical Wiring correct answers 3 Wires (black, white, bare) Black- hot conductor, White -
grounded conductor aka neutral, Bare - Alternative route utilized in case of an emergency.
Ohm's Law correct answers Describes the relationship between voltage, amperage, and ohms:
A = V/ Ώ
The Law of Electrical Power correct answers used to calculate the amount of power consumed
by an electrical or electronic device:
W=VxA
Finding Resistance in a Circuit correct answers Series - add the resistance of each load
Parallel - add the inverses of the resistance
Memorize this order of operations in an Otto cycle engine correct answers INTAKE - The piston
moves down, creating a partial vacuum in the cylinder. The fuel air mixture enters the cylinder
through the open intake valve. The exhaust valve is closed.
COMPRESSION- Both valves are closed. The piston moves up, compressing the fuel-air
mixture to about ten times atmospheric pressure.
POWER- The spark plugs fire, starting an explosion inside the cylinder. The resulting high
pressure pushes the piston down.
, EXHAUST- The piston moves up again, with the exhaust valve open and the intake valve
closed. The piston pushes burned exhaust gases into the exhaust manifold and out of the engine.
Viscosity correct answers measures the thickness of the oil. Measured by S.A.E. numbers which
range from very light SAE 5 to SAE 90, typically for regular driving oil is rated at SAE 30 to 40.
Automobile Engine Troubleshooting correct answers 1 A "ping" or "knocking" sound on
acceleration usually means that you need a higher octane gasoline. The noise indicates that the
fuel-air mixture is igniting too soon inside the cylinder.
2 A squealing noise that increases with engine speed indicates a loose or worn fan belt.
3 An engine that runs extremely rough may have a failed spark plug or some other problem
within the ignition system.
4 General sluggishness, roughness, or poor fuel mileage all indicate the need for a tune-up.
5 Loud clanking sounds may indicate major engine problems that will only get worse if you
ignore them.
The differential has three jobs: correct answers 1 Allow different movement of the two axels, so
that the car can turn a corner.
2 Change drive directions. In rear-wheel-drive cars, it connects to the drive shaft that runs from
front to back and powers the axles, which run from side to side.
3 Increase Power. It usually reduces the drive speed, so that three to four input revolutions create
one turn of the axles.
Important notes regarding spark plugs correct answers 1 Is coated with a greasy black substance,
the cylinder is leaking oil, probably because of worn piston rings. Oil burns incompletely in the
cylinders, leaving this black deposit.
2 It must have the correct gap, measured in thousandths of an inch. Feeler gauges are used to set
the correct gap.
3 When their electrodes get thin, the plug should then be replaced.
Electronic Ignition correct answers This system also allows precise spark timing, which
increases power and MPG, all the while reducing pollution.
Battery correct answers cars use a 12-volt to store electric energy for starting
Corrosion-preventing chemicals correct answers can avoid problems blamed on "dead batteries",
these chemical often show up as red spray on the terminal
Starter Motor correct answers If you have ever tried to start a car that was already running,
you've heard a loud grinding noise. This racket comes from the starter-motor gear clashing
against the spinning wheel.
Engine Control Unit (ECU) correct answers Controls Electrical Functions of Engines &
Transmits Operation info to Cockpit. a small computer system within the car often referred to as
the brains of the car.
Answers.
Direct Current (DC) correct answers a steady flowing type of electricity, produced by batteries
and used in flashlights, boom boxes, and computers.
Voltage correct answers Annotated as a capital V, force that affects the rate at which electricity
flows through a conductor (aka: electrical pressure). The higher it is the more likely electricity
will "leak" across an insulator or an air gap.
Resistance correct answers is the opposition of a material to the flow of electricity through it.
ALL circuits must have this. If they do not they are then considered short circuits which can lead
to wires overheating
Amperes correct answers Annotated as a capital A, represents current strength
Ohms correct answers Annotated as Ώ, represents the measurement of the resistance in any
circuit.
Watts correct answers Annotated as a capital W, represents the measurement of power consumed
by an electrical device.
Circuit Rule correct answers Current is the same at all points in a series circuit. Voltage is the
same at all points in a parallel circuit.
Typical Wiring correct answers 3 Wires (black, white, bare) Black- hot conductor, White -
grounded conductor aka neutral, Bare - Alternative route utilized in case of an emergency.
Ohm's Law correct answers Describes the relationship between voltage, amperage, and ohms:
A = V/ Ώ
The Law of Electrical Power correct answers used to calculate the amount of power consumed
by an electrical or electronic device:
W=VxA
Finding Resistance in a Circuit correct answers Series - add the resistance of each load
Parallel - add the inverses of the resistance
Memorize this order of operations in an Otto cycle engine correct answers INTAKE - The piston
moves down, creating a partial vacuum in the cylinder. The fuel air mixture enters the cylinder
through the open intake valve. The exhaust valve is closed.
COMPRESSION- Both valves are closed. The piston moves up, compressing the fuel-air
mixture to about ten times atmospheric pressure.
POWER- The spark plugs fire, starting an explosion inside the cylinder. The resulting high
pressure pushes the piston down.
, EXHAUST- The piston moves up again, with the exhaust valve open and the intake valve
closed. The piston pushes burned exhaust gases into the exhaust manifold and out of the engine.
Viscosity correct answers measures the thickness of the oil. Measured by S.A.E. numbers which
range from very light SAE 5 to SAE 90, typically for regular driving oil is rated at SAE 30 to 40.
Automobile Engine Troubleshooting correct answers 1 A "ping" or "knocking" sound on
acceleration usually means that you need a higher octane gasoline. The noise indicates that the
fuel-air mixture is igniting too soon inside the cylinder.
2 A squealing noise that increases with engine speed indicates a loose or worn fan belt.
3 An engine that runs extremely rough may have a failed spark plug or some other problem
within the ignition system.
4 General sluggishness, roughness, or poor fuel mileage all indicate the need for a tune-up.
5 Loud clanking sounds may indicate major engine problems that will only get worse if you
ignore them.
The differential has three jobs: correct answers 1 Allow different movement of the two axels, so
that the car can turn a corner.
2 Change drive directions. In rear-wheel-drive cars, it connects to the drive shaft that runs from
front to back and powers the axles, which run from side to side.
3 Increase Power. It usually reduces the drive speed, so that three to four input revolutions create
one turn of the axles.
Important notes regarding spark plugs correct answers 1 Is coated with a greasy black substance,
the cylinder is leaking oil, probably because of worn piston rings. Oil burns incompletely in the
cylinders, leaving this black deposit.
2 It must have the correct gap, measured in thousandths of an inch. Feeler gauges are used to set
the correct gap.
3 When their electrodes get thin, the plug should then be replaced.
Electronic Ignition correct answers This system also allows precise spark timing, which
increases power and MPG, all the while reducing pollution.
Battery correct answers cars use a 12-volt to store electric energy for starting
Corrosion-preventing chemicals correct answers can avoid problems blamed on "dead batteries",
these chemical often show up as red spray on the terminal
Starter Motor correct answers If you have ever tried to start a car that was already running,
you've heard a loud grinding noise. This racket comes from the starter-motor gear clashing
against the spinning wheel.
Engine Control Unit (ECU) correct answers Controls Electrical Functions of Engines &
Transmits Operation info to Cockpit. a small computer system within the car often referred to as
the brains of the car.
