ASVAB-Electronic-Info Dumps ASVAB-Electronic-Info Braindumps

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ASVAB-Electronic-Info


ASVAB Section 5 : Electronic Information


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Question: 170


How many wires do serial cables used on computers have?

  1. 3

  2. 9

  3. 15

  4. 25


Answer: B


This is true, even if the cable has a 25-pin connector. Serial cables are often used to connect computers to perpetual devices.

Question: 171


To produce greater storage of electrons and more capacitance, capacitors should .

  1. be connected in parallel

  2. be connected in series

  3. have more voltage applied to them

  4. be eliminated


Answer: A


Connecting capacitors in parallel produces more capacitance.

Question: 172


Insulated fittings can be used to splice wires, thus eliminating the need for .

  1. cleaning the wires

  2. removing the plastic coating from the wires

  3. twisting the wires together

  4. soldering the wires together


Answer: D


Insulated fittings replace soldering.

Question: 173


The symbol shown above stands for .

  1. battery

  2. transformer

  3. capacitor

  4. resistor


Answer: A


This symbol stands for battery.

Question: 174


Radio waves travel .

  1. at the speed of light

  2. at the speed of sound

  3. faster than the speed of light

  4. faster than the speed of sound but slower than the speed of light


Answer: A


Radio waves travel at the speed of light. The speed of sound is much slower.

Question: 175


Changing alternating current to direct current is called .

  1. capacitance

  2. impedance

  3. rectification

  4. induction


Answer: C


Changing AC to DC is a process called rectification.

Question: 176


Millihenries are related to .

  1. capacitors

  2. inductors

  3. relays

  4. transformers


Answer: B


Inductors are rated in millihenries.

Question: 177


Radar can operate at frequencies as high as .

A. 100,000 Hz

  1. 100,000 kHz

  2. 100,000 MHz

  3. 500,000 MHz


Answer: C

Radar can operate as high as 100,000 MHz (megahertz).

Question: 178


Newer cell phones contain a removable memory card, which is often called a .

  1. SIM card

  2. DIM chip

  3. PIN card

  4. Pin chip


Answer: A


SIM stands for Subscriber Identity Module. The card contains information such as your phone number, your billing information, and your address book. It makes it easier to switch from one cell phone to another.

Question: 179


When current flows through a wire, the following influences are present .

  1. amperes and ohms only

  2. voltage, watts, and ohms only

  3. voltage and amperes only

  4. voltage, ohms, and amperes


Answer: D


Voltage, ohms, and amperes are always present when current flows through a wire.

Question: 180


Another name for cycles per second is .

  1. watts

  2. voltage

  3. hertz

  4. amperes


Answer: C


The number of times alternating current changes direction in one second is known as its frequency, which is measured in hertz.

Question: 181


Which of the following materials usually has an electromagnetic-induction device in its core?

  1. brass

  2. silver

  3. aluminum

  4. iron


Answer: D


Iron is easily magnetized and demagnetized, so it works well for this device.

Question: 182


How many diodes should you expect to find in a bridge rectifier?

  1. 0

  2. 4

  3. 8

  4. 10


Answer: C


A bridge rectifier is also known as a full wave rectifier, usually containing 8 diodes.

Question: 183


Ohm’s law states .

  1. Voltage = Current x Resistance

  2. Amperes = Current x Resistance

  3. Voltage = Resistance ÷ Amperes

  4. Ohms = Voltage ÷ Current


Answer: A


Ohm’s law states that Voltage (V) = Current (I) x Resistance (R). All other answers are incorrect expressions of this law.