Quiz 3

Question 1

When should tools be inventoried?

Answer 1

before and after each job

Question 2

The first step to take when a person is rendered unconscious by electrical shock is to:

Answer 2

break the connection between the victim and the circuit

Question 3

Who develops Material Safety Data Sheets (MSDS) for a chemical?

Answer 3

chemical manufacturer

Question 4

What formula do you use to find total capacitance when there are three capacitors of the same value connected in series?

Answer 4

Ctot = 1/(1/C1 + 1/C2 + 1/C3)

Question 5

What changes AC current to DC current?

Answer 5

a rectifier

Question 6

What formula do you use to find the total resistance of three resistors of different values connected in parallel?

Answer 6

Rtot = 1/(1/R1 + 1/R2 + 1/R3)

Question 7

What decreases as the frequency of a capacitor increases?

Answer 7

(Xc) Capacitive Reactance

Question 8

What is 624,000,000 in scientific notation?

Answer 8

6.24 × 10⁸

Question 9

Conductors have free ______.

Answer 9

electrons

Question 10

When the wire gauges increase from AWG 1 to AWG 40 for round wire, what decreases?

Answer 10

diameter and circular area

Question 11

Increasing the amount of forward bias will ______ the resistance of a PN junction diode.

Answer 11

decrease

Question 12

The cutoff frequency of a filter is the frequency where the output:

Answer 12

drops to 70.7% of its maximum value

Question 13

If voltage in a power supply increases, then voltage drops across resistors connected to that power supply:

Answer 13

increase

Question 14

The resistance of a blown fuse is:

Answer 14

infinite Ω

Question 15

If a resistor has 0 voltage drop, that means the resistor is:

Answer 15

shorted

Question 16

Hysteresis losses:

Answer 16

increase with high frequencies

Question 17

Decreasing the amount of forward bias ______ the conduction through a diode.

Answer 17

increases

Question 18

The resistance of the current return path through the aircraft is always considered negligible if:

Answer 18

it is adequately bonded

Question 19

The three basic requirements for a practical circuit are:

Answer 19

power source, load, and a conductor

Question 20

Which rule is used to determine the magnetic polarity of a coil?

Answer 20

left-hand rule

Question 21

If infinity is measured with an ohmmeter across a diode in both directions, the diode is:

Answer 21

open

Question 22

In an AC circuit, the effective voltage is:

Answer 22

less than the maximum instantaneous voltage

Question 23

The basic operation of a transformer is:

Answer 23

inductance

Question 24

The working voltage of a capacitor in an AC circuit should be:

Answer 24

at least 50% greater than the maximum applied voltage

Question 25

What is the nominal impedance of a coaxial cable used for aircraft radios?

Answer 25

50 ohms

Question 26

What type of filter is characterized by a series inductor at the input and a shunt capacitor at the output?

Answer 26

Choke input filter

Question 27

In scientific notation, what is the base number?

Answer 27

The number to be multiplied by itself

Question 28

The formula for transformers is:

Answer 28

Vp/Vs = Np/Ns = Is/Ip

Question 29

Current in a parallel circuit is:

Answer 29

inversely proportional to the circuit's resistance

Question 30

An analog multimeter (AMM) checks for:

Answer 30

voltage, current, and resistance

Question 31

What is the number one concern in regards to electrical safety?

Answer 31

Shock

Question 32

What component's value is measured in millihenries?

Answer 32

Inductor

Question 33

Ohm's Law characterizes the relationship between:

Answer 33

power, resistance, current, and voltage

Question 34

The basic properties associated with alternating voltage and current are:

Answer 34

frequency, period, wavelength, and amplitude

Question 35

Two basic uses for transformers are:

Answer 35

signal matching and power supplies

Question 36

What are the three basic parts of a transformer?

Answer 36

Primary winding, secondary winding, and core

Question 37

What part of an atom is associated with the flow of electricity?

Answer 37

Electrons

Question 38

What in electrons in a conductor determines whether its flow is poor or good?

Answer 38

Whether or not they contain free electrons in the orbit of atoms

Question 39

Define Static Electricity.

Answer 39

A difference of electrical charge between two non-conductive surfaces

Question 40

What term is used to express the flow of electricity?

Answer 40

Amperes

Question 41

What is a coulomb?

Answer 41

A basic unit of electrical quantity equal to 6.28 × 10¹⁸ electrons

Question 42

What is the basic unit of electrical pressure?

Answer 42

Electron Motive Force (EMF) or Volts

Question 43

If voltage and resistance are known, how can total current be determined?

Answer 43

I = V / R

Question 44

What device other than an actual battery can be used to store energy?

Answer 44

Capacitor

Question 45

Describe the left-hand rule as it pertains to electrical generation.

Answer 45

Thumb = motion of conductor, index finger = magnetic field, middle finger = current flow

Question 46

What trait allows magnetic lines of flux to flow easily?

Answer 46

Permeability

Question 47

What is the common electrical point that allows circuits to have a return path to power?

Answer 47

Earth or chassis ground

Question 48

What is the result of passing too much current in a small gauge wire?

Answer 48

Excessive heat due to high resistance

Question 49

Describe the relationship in Ohm's Law.

Answer 49

Voltage = Current × Resistance

Question 50

How much work can be achieved with one watt of energy?

Answer 50

1 watt = 1/746 horsepower

Question 51

Describe current in a series circuit.

Answer 51

It is the same at all points

Question 52

How is voltage distributed in a parallel circuit?

Answer 52

It is equal across all branches

Question 53

What defines the operational force that resists an aircraft's forward motion?

Answer 53

Drag

Question 54

What type of pliers are used for safety-wiring hardware?

Answer 54

Duckbill

Question 55

Coaxial cable outer shield should be grounded at:

Answer 55

Both input and output ends

Question 56

With proper bias applied to a transistor, the emitter-base junction has ______ resistance and the collector-base junction has ______ resistance.

Answer 56

low, high

Question 57

A(n) ______ is used to display the output waveform of a wave-generating circuit.

Answer 57

Oscilloscope

Question 58

What formula finds total capacitance for three capacitors in parallel?

Answer 58

Ctot = C1 + C2 + C3

Question 59

How do the elevators of an aircraft move?

Answer 59

Forward and aft movement of the control stick/yoke

Question 60

In a capacitive circuit, what is the voltage and current relationship?

Answer 60

Voltage lags

Question 61

When the frequency of an applied voltage increases, the capacitive reactance will:

Answer 61

Decrease