Flashcards in NAVEDTRA 14173A, NEETS Mod. 1, Ch.3 Deck (50)

Loading flashcards...

1

## What is any device called in which an electrical current flows and which changes this electrical energy into a more useful form?

### Load

2

## Which device furnishes the electrical energy used by the load?

### Source

3

## What permits control of the electrical device and interrupts the current delivered to the load?

### Switch

4

## What is the technician’s main aid in troubleshooting a circuit in a piece of equipment?

### Schematic Diagram

5

## Who proved by an experiment that a precise relationship exists between current, voltage, and resistance?

### George Simon Ohm

6

## What is current inversely proportional to?

### Resistance

7

##
What is a basic tool used to solve electrical problems?

### Algebra

8

## What can be constructed to easily analyze a circuit?

### Graph

9

## Which axis on a graph is known as the X-AXIS?

### Horizontal

10

## What is the rate at which work is being done referred to as?

### Power

11

## What unit is electric power rate measured in?

### Watts

12

## What is the basic unit of power?

### Watt

13

## What indicates the rate at which devices convert electrical energy into another form of energy?

### Power rating

14

## In most circuits, the actual power used by a resistor is considerably less than the power rating of the resistor because a safety factor of what percent is used?

### 50%

15

## When resistors with wattage ratings greater than how many watts are needed, wirewound resistors are used?

### 5

16

## Wirewound resistors are made in values between 5 and how many watts?

### 200

17

## Which electrical device property is the ratio of power converted to useful energy divided by the power consumed by the device?

### Efficiency

18

## How many watts are required to equal one horsepower?

### 746

19

## What is a complete conducting pathway called?

### Electric circuit

20

## Which type of circuit contains only one path for current flow?

### Series

21

## Each of the resistors in a series circuit consumes power which is dissipated in the form of what?

### Heat

22

## The total resistance of a series circuit is equal to the sum of the what?

### Individual resistances

23

## Which resistor value is the voltage drop across a resistor in a series circuit proportional to?

### Ohmic

24

## What year did G. R. Kirchhoff extend the use of Ohm’s law by developing a simple concept concerning the voltages contained in a series circuit loop?

### 1847

25

## Which law states that "The algebraic sum of the voltage drops in any closed path in a circuit and the electromotive forces in that path is equal to zero."?

### Kirchhoff’s voltage law

26

## What are emf sources that would tend to force current in opposite directions said to be?

### Series opposing

27

## What is an arbitrarily chosen point to which all other points in the circuit are compared?

### Reference point

28

## Which term is used to denote a common electrical point of zero potential?

### Ground

29

## What is the common ground for the many electrical circuits in most electrical equipment?

### Metal chassis

30