Electrical

Question 1

An ammeter is a device that measures

Answer 1

Current

Question 2

The name “ammeter” comes from the fact that it is a meter used to measure current (in ___________)

Answer 2

Amperes, and thus is called an AMpere METER, or AMMETER.

Question 3

Some electrical and electronic devices have meters built into them. These meters are known as

Answer 3

in-circuit meters

Question 4

In troubleshooting, it is usually necessary to use a meter that can be connected to the electrical or electronic equipment at various testing points and may be moved from one piece of equipment to another. These meters are generally portable and self-contained, and are known as

Answer 4

out-of-circuit meters

Question 5

_______ meters are more versatile than in-circuit meters

Answer 5

Out of circuit meters

Question 6

the ________ meter can be used wherever you wish to connect it.

Answer 6

Out of circuit meter

Question 7

Ammeters must always be connected in ________ with the circuit under test.

Answer 7

Series

Question 8

The two instruments most commonly used to check the continuity (a complete circuit), or to measure the resistance of a circuit or circuit element, are the _______ and the _________

Answer 8

OHMMETER and the MEGGER (megohm meter).

Question 9

The ohmmeter is widely used to measure ________ and check the continuity of electrical circuits and devices.

Answer 9

resistance

Question 10

The megger is widely used for measuring ________ resistance, such as between a wire and the outer surface of the _______, and _______ resistance of cables and insulators.

Answer 10

insulation

Question 11

ohmmeter are connected in_______ with the circuit to be measured

Answer 11

series

Question 12

A ________ is the most common measuring device used in the Navy.

Answer 12

MULTIMETER

Question 13

The thermocouple movement uses the current being developed in a thermocouple when the heat of a resistive wire is _______ to the thermocouple.

Answer 13

transferred

Question 14

Thermocoupler movement will measure only ______

Answer 14

Current

Question 15

A _______ is the simplest circuit protection device.

Answer 15

fuse

Question 16

___________ is a condition in which some point in the circuit, where full system voltage is present, comes in direct contact with the ground or return side of the circuit.

Answer 16

DIRECT SHORT

Question 17

__________ are used in low-voltage, low-current circuits. This type fuse is rapidly being replaced by the circuit breaker.

Answer 17

PLUG-TYPE FUSES

Question 18

Shipboard fatalities have been reported due to contact with _____ volt circuits.

Answer 18

115 volts

Question 19

1 mA - _____ is felt.

Answer 19

Shock

Question 20

At ______ - a person may be unable to let go.

Answer 20

10 mA

Question 21

100 mA - shock may be ______ if it lasts for one second or more.

Answer 21

fatal

Question 22

Work on energized systems _______ or greater is prohibited unless approved by NAVSEA.

Answer 22

1000 volts

Question 23

A _____ is a device that transforms chemical energy into electrical energy.

Answer 23

Cell

Question 24

The electrolyte is the solution that acts upon the ______. The electrolyte, which provides a path for electron flow, may be a salt, an acid, or an alkaline solution.

Answer 24

electrodes

Question 25

In the simple galvanic cell, the electrolyte is in a liquid form. In the dry cell, the electrolyte is a ______.

Answer 25

paste

Question 26

What are the three parts of a cell?

Answer 26

Container, electrolytes, electrodes

Question 27

What are the two types of cells?

Answer 27

Primary and secondary

Question 28

A primary cell is one in which the _______ _______ eats away one of the electrodes, usually the negative electrode.

Answer 28

chemical action

Question 29

A secondary cell is one in which the electrodes and the electrolyte are _______ by the chemical action that takes place when the cell delivers current.

Answer 29

altered

Question 30

What is another name for the positive electrode?

Answer 30

Anode

Question 31

What is another name for the negative electrode?

Answer 31

Cathode

Question 32

The automobile storage battery is a common example of the _______ cell.

Answer 32

secondary cell

Question 33

When connecting cells in_____, connect alternate terminals together ( to +, to +, etc.)

Answer 33

series

Question 34

In a _____ connection, all positive cell electrodes are connected to one line, and all negative electrodes are connected to the other.

Answer 34

parallel

Question 35

The lead-acid battery is one of the most _________ batteries in use today.

Answer 35

common

Question 36

Specific gravity is the ratio of the _______ of a certain amount of a given substance compared to the weight of the same amount of pure water.

Answer 36

weight

Question 37

The ________ _________ of pure water is 1.0. Any substance that floats has a specific gravity less than 1.0.

Answer 37

specific gravity

Question 38

To measure a battery’s _______________, use an instrument called a HYDROMETER.

Answer 38

specific gravity

Question 39

Distilled water should be added to bring the _________ to the proper level.

Answer 39

electrolyte

Question 40

If the electrolyte is spilled or splashed on the skin or eyes, IMMEDIATELY flush the skin or eyes with large quantities of fresh water for a minimum of ____________

Answer 40

15 minutes.