Flashcards in Ch 2 Deck (33)

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1

## (T/F) Smaller conductors have greater resistance and larger conductors have lower resistance

### True

2

## (T/F) According to the Conventional Current Flow Theory, a positive charge flows from positive to negative in the circuit

### True

3

## (T/F) Power is not equal to E x I for ac circuits because consideration must be given to inductive reactance

### True

4

## (T/F) Often the resistance of the power source and conductor are ignored in circuit calculations

### True

5

## What is the formula for input?

### Input = Output / Efficiency

6

## How would you find the reciprocal of 1.25?

### 1 / 1.25

7

## The Ohm's Law formula, I = E/R, states that current is _____ proportional to the voltage and ____ proportional to the resistance.

### directly : inversely

8

## Power in a circuit can be either "useful" or "wasted". Wasted work is still energy used; therefore it must be paid for, so we call this "_______"

### Power losses

9

## Ohm's Law demonstrates the relationship between circuit _____ (intensity, EMF, or resistance)

### All of them

10

## What is the Kw of a 75W load?

### .075 kW

11

## (T/F) Squaring a number means multiplying the number by itslef

### True

12

## In an ac circuit, the factors that oppose current flow are ______

### resistance , inductive reactance, & capacitive reactance

13

## The volume of an enclosure is expressed in ______

### Cubic Inches

14

## An electrical circuit consists of what three things?

### Power Source : Conductors : Load

15

## Put these conductors in their order for conductivity: Gold, silver, copper aluminum

### Silver : Copper : Gold : Aluminum

16

## (T/F) The work that ca be performed by moving electrons depends on the circuit pressure and the circuit's opposition to the flow of electrons

### True

17

## According the the Electron Current Flow Theory, electrons leave the _____ terminal of the source, flow through the conductors and load(s) and return to the _____ terminal of the source

### Negative : Positive

18

## (T/F) The major advantage of ac over dc is the ease of voltage regulation by the use of a transformer

### True

19

## (T/F) The voltage applied to a resistor dramatically affects the power consumed by that resistor because power is affected in direct proportion to the voltage

### False

20

## (T/F) DC power is determined by multiplying the electromotive force by the circuit intensity

### True

21

## The method of increasing a number by another number is done by using a _______

### Multiplier

22

## Electrical pressure is called "______", and it is measured in volts.

### EMF or Potential

23

## (T/F) Conductance is the property that permits current to flow

### (T/F)

24

## (T/F) Deriving the square root of a number is almost the same as squaring a number

### False

25

## (T/F) The polarity and the output voltage from a dc power source changes direction

### False

26

## How do you find the reciprocal of a number?

### Turn that number into a decimal and divide it into the number 1

27

## (T/F) According to the Electron Current Flow Theory, electrons flow away from the negative terminal of the source, through the circuit and load, toward the positive terminal of the source

### True

28

## In electrical systems, the volume of electrons that move through a conductor is called the "circuits _____"

### Intensity

29

## "______" is defined as the rate of work measured by the unit called the watt

### Power

30