FAA General 8001-8108 there

Bonding connections should not exceed?

.003 ohm

REFER TO FIGURE 2 What is the total capacitance of a certain circuit containing three capacitors with capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively?

.0125 uF

REFER TO FIGURE 2 (figure is incorrect) {corrected figure CT = c1 +c2+c3} What is the total capacitance of a circuit containing three capacitors in parallel with capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively?

.170 uF

What is the total capacitance of a certain circuit containing three capacitors with capacitances of .25 microfarad, .03 microfarad, and .12 microfarad, respectively? parallel

.4 uF

a lead acid battery with 12 cells connected in series (no load voltage = 2.1 volts per cell) furnishes 10 amperes to a load of 2 ohms resistance. the internal resistance of the battery in this instance is?

0.52 ohms

If three resistors of 3 ohms, 5 ohms, and 22 ohms are connected in series in a 28-volt circuit, how much current will flow through the 3-ohms resistor?

0.93 ampere

A 12-volt electric motor has 1,000 watts input and 1 horsepower output. Maintaining the SAME EFFICIENCY, how much input power will a 24-volt, 1-horsepower electric motor require?

1,000 watts

Which of the following statements is/are generally true regarding the charging of several aircraft batteries together?

1. Batteries of different voltages (but similar capacities) can be connected in series with each other across the charger, and charged using the constant current method. 2. Batteries of different ampere-hour capacity and same voltage can be connected in parallel with each other across the charger, and charged using the constant voltage method.

refer to figure 13 determine the total current flow in the circuit

1.4 amps

REFER TO FIGURE 5 What is the impedance of an ac-series circuit consisting of an inductor with a reactance of 10 ohms, a capacitor with a reactance of 4 ohms, and a resistor with a resistance of 8 ohms?

10 ohms

REFER TO FIGURE 8 With an ohmmeter connected into the circuit as shown, what will the ohmmeter read?

10 ohms

A circuit has an applied voltage of 30 volts and a load consisting of a 10-ohm resistor in series with a 20-ohms resistor. What is the voltage drop across the 10-ohm resistor?

10 volts

refer to figure 14. the total resistance of the circuit is

17 ohms

refer to figure 21. which symbol represents a variable resistor?

2

refer to figure 26. which of the logic gates output conditions is correct with respect to the given inputs?

2

REFER TO FIGURE 4 How much power is being furnished to the circuit?

2,645 watts

.002KV equals

2.0 volts

REFER TO FIGURE 12 Find the total resistance of the circuit.

21.2 ohms

A 24-volt source is required to furnish 48 watts to a parallel circuit consisting of two resistors of equal value. What is the value of each resistor?

24 ohms

A 24-volt source is required to furnish 48 watts to a parallel circuit consisting of four resistors of equal value. What is the voltage drop across each resistor?

24 volts

In a parallel circuit with four 6-ohm resistors across a 24-volt battery, what is the total voltage across resistor-three (VR3) in the circuit?

24 volts

REFER TO FIGURE 11 Find the voltage across the 8-ohm resistor

24 volts

How many amperes will a 28-volt generator be required to supply to a circuit containing five lamps in parallel, three of which have a resistance of 6 ohms each and two of which have a resistance of 5 ohms?

25.23 amperes

What is the operating resistance of a 30-watt light bulb designed for a 28-volt system?

26 ohms

(refer to fig. 27) in the isometric view of a typical aileron balance weight, identify the view indicated by the arrow.

3

refer to figure 16. with power to the bus and the fuel selector switched to the right hand tank, how many relays in the system are operating?

3

refer to figure 17. which of the components is a potentiometer?

3

REFER TO FIGURE 6 If resistor R5 is disconnected at the junction of R4 and R3 as shown, what will the ohm-meter read?

3 ohms

REFER TO FIGURE 11 Find the total current flowing in the wire between points C and D.

3.0 amperes

REFER TO FIGURE 10 What is the measure voltage of the series-parallel circuit between terminals A and B?

3.0 volts

a 48 volt source is required to furnish 192 watts to a parallel circuit consisting of 3 resistors of equal value. what is the value of each resistor?

36 ohms

How much power must a 24-volt generator furnish to a system which contains the following loads? One motor (75% efficient) ................1/5 hp Three position lights..........................20 watts each One heating element ........................5 amp One anticollision light........................3 amp

450 watts.............................746 x(1/5)=ans/.75=ans +60watt+((5+3)x24v)

refer to figure 16. Energize the circuit with the fuel tank selector switch selected to the left hand position. using the schematic, identify the switches that will change position.

5, 6, 11, 12, 13, 15, 16

in a parallel circuit with three 6 ohm resistors across a 12 volt battery, what is the total current value in the circuit?

6 amps

A 1-horsepower, 24-volt dc electric motor that is 80 percent efficient requires 932.5 watts. How much power will a 1-horsepower, 12-volt dc motor that is 75 percent efficient require?

746watts/.75= 994.6 watts

Which requires the most electrical power? A) 4- 30 watt lamps in 12 volt parallel circuit. B) 24 volt anticollision light circuit with 2 assemblies requiring 3 amperes each. C)A 1/5-horsepower, 24-volt motor which is 75 percent efficient

A 1/5-horsepower, 24-volt motor which is 75 percent efficient

if electrolyte from a lead acid battery is spilled in the battery compartment, which procedure should be followed?

Apply sodium bicarbonate solution to the affected area followed by a water rinse

A 14-ohm resistor is to be installed in a series circuit carrying .05 ampere. How much power will the resistor be required to dissipate?

At least 35 milliwatts.

In a P-N-P transistor application, the solid state device is turned on when the?

Base is negative with respect to the emitter

In a N-P-N transistor application, the solid state device is turned on when the?

Base is positive with respect to the emitter

1. A detailed drawing is a description of a single part. 2. an assembly drawing is a description of an object made up of two or more parts. regarding the above statements which statement is correct?

Both statement 1 and statement 2 are true

In an ac circuit, the effective voltage is...

less than the maximum instantaneous voltage.

(refer to figure 28) identify the bottom view of the object shown.

C. figure 2 is the bottom view

refer to figure 17. the electrical symbol represented at number 5 is a variable what?

Capacitor

Forward biasing of a solid state device will cause the device to

Conduct

What is the basic unit of electrical quantity?

Coulomb

(REFER TO FIGURE 11) what would happen to the total current flow if resistance is doubled?

Current flow would be reduced by 50%

What two devices prevent a change in direction of current flow in a circuit under fault conditions?

Cut-out relay and reverse current circuit breaker

Which of these will cause the resistance of a conductor to decrease?

Decrease the length or increase the cross section area

Which of the following are commonly used as rectifiers in electrical circuits?

Diodes

Which is correct in reference to electrical resistance?

If one of three bulbs in a parallel lighting circuit is removed, the total resistance of the circuit will become greater.

An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?

Inductance and frequency

What is the opposition to the flow of AC produced by a magnetic field with generated back voltage (EMF) called?

Inductive reactance

REFER TO FIGURE 7 If resistor R3 is disconnected at terminal D, what will the ohmmeter read?

Infinite resistance

Through which material will magnetic lines of force pass the most readily?

Iron

Which effects apply to the movement of electrons flowing in a conductor, and what effect does not apply?

Magnetic energy and thermal energy apply but Static energy does not

what type of line is normally used in a mechanical drawing or blueprint to represent an edge or object not visible to the viewer?

Medium weight dashed line

Which term means .001 ampere?

Milliampere

A fully charged lead acid battery will not freeze until extremely low temperatures are reached because

Most of the acid is in the solution

refer to figure 19. when the landing gears are up and the throttles are retarded, the warning horn will not sound if an open occurs in what wire?

NO. 6

refer to figure 18. when the landing gears are up and the throttles are retarded, the warning horn will not sound if an open occurs in wire?

No. 4

refer to figure 19 when the throttles are retarded with only the right gear down, the warning horn will not sound if an open occurs in wire?

No. 5

A thermal switch, as used in an electric motor, is designed to?

Open the circuit in order to allow cooling of the motor

refer to figure 16 when electrical power is applied to the bus, which relays are energized?

PCC and TCC

Capacitors are sometimes used in Dc circuits to

Smooth out slight pulsations in current/voltage

The voltage drop in a circuit of known resistance is dependent on

The amperage of the circuit

What happens to the current in a voltage step-up transformer with the ratio of 1 to 4?

The current is stepped down by a 1 to 4 ratio

refer to figure 16 what will be the effect if the PCO relay fails to operate when the left hand tank is selected?

The fuel pressure cross feed valve open light will not illuminate

When Referring to an electrical circuit diagram, what point is considered to be at zero voltage?

The ground reference

which statement regarding the hydrometer reading of a lead acid storage battery electrolyte is true?

The hydrometer reading does not require a temperature correction if the electrolyte temperature is 80°F

What determines the amount of current which will flow through a battery while it is being charged by a constant voltage source?

The state of charge of the battery

Which statement is correct when made in reference to a parallel circuit?

The total current is equal to the sum of the currents through the individual branches of the circuit.

What is the purpose of the ground symbol used in electrical circuit diagrams?

To show that there is a return path for the current between the source of electrical energy and the load.

Which is correct concerning a parallel circuit?

Total resistance will be smaller than the smallest resistor

Which requires the most electrical power during operation? (Note: 1 horsepower=746 watts) A) 2 lights requiring 3 amps each in a 24 volt parallel system B) 4 30-watt lamps in a 12 volt parallel circuit C) a 12 volt motor requiring 8 amps

Two lights requiring 3 amperes each in a 24-volt parallel system.

Typical application for Zener diodes is as

Voltage regulators

What unit is used to express electrical power?

Watt

Which of the following logic gates will provide an active high out only when all inputs are different?

XOR

What will a voltmeter read if properly connected across a closed switch in a circuit with electrical power on?

Zero voltage

a specific measured distance from the datum or some other point identified by the manufacturer, to a point in or on the aircraft is called?

a station number

refer to figure 24. which statement concerning the depicted logic gate is true?

any input being 1 will produce a 1 output

The working voltage of a capacitor in an ac circuit should be...

at least 50 percent greater than the highest applied voltage.

refer to figure 23. if R2 sticks in the up position, the light will?

be on full bright

how can the state of charge of a nickel cadmium battery be determined?

by a measured discharge

refer to figure 23. if an open occurs at R1, the light?

cannot be turned off

in nickel cadmium batteries, a rise in cell temperature

causes a decrease in internal resistance

refer to figure 15. the number 7 wire is used to

complete the Push TO Test circuit

The method used to rapidly charge a nickel cadmium battery utilizes

constant voltage and varying current

what is the likely result of servicing and charging of nickel cadmium and lead acid batteries together in the same service area?

contamination of both types of batteries

refer to figure 16 . The TCO relay will operate if 24 volts dc is applied to the bus and the fuel tank selector is in the what position?

crossfeed position

the end of charge voltage of a 19 cell nickel cadmium battery, measured while still on charge

depends upon its temperature and the method used for charging

Electrostatic fields are also known as...

dielectric fields

Unless otherwise specified, any values given for current or voltage in an ac circuit are assumed to be...

effective values.

nickel cadmium batteries which are stored for a long period of time will show a low liquid level because

electrolyte becomes absorbed into the plates

When different rated capacitors are connected in parallel in a circuit, the total capacitance is...

equal to the sum of all the capacitances. (CT=C1+C2+C3)

When inductors are connected in series in a circuit, the total inductance is (where the magnetic fields of each inductor do not affect the others)...

equal to the sum of the individual inductances. (LT=L1+L2+L3)

A cabin entry light of 10 watts and a dome light of 20 watts are connected in parallel to a 30-volt source. If the voltage across the 10-watt light is measured, it will be ...

equal to the voltage across the 20-watt light.

what may result if water is added to a nickel cadmium battery when its not fully charged?

excessive spewing is likely to occur during the charging cycle

which condition is an indication of improperly torqued cell link connections of a nickel cadmium battery?

heat or burn marks on the hardware

The term that describes the combined resistive forces in an ac circuit is...

impedance.

the electrolyte of a nickel cadmium battery is the lowest when the battery is

in a discharged condition

The electrolyte of a nickel cadmium battery is highest when the battery is

in a fully charged condition

The correct way to connect a test voltmeter in a circuit is...

in parallel with a unit.

refer to figure 15. when the landing gear is down the green light will not come on if an open occurs in which wire?

in wire no. 6

The basis for transformer operation in the use of alternating current is mutual...

inductance

The opposition offered by a coil to the flow of alternating current is called (disregard resistance)...

inductive reactance

Transfer of electric energy from one circuit to another without the aid of electrical connections...

is called induction

refer to figure 19. under which condition will a ground be provided for the warning horn through both gear switches when the throttles are closed?

left gear up and right gear down

When calculating power in a reactive or inductive ac circuit, the true power is...

less than the apparent power.

REFER TO FIGURE 1 When different rated capacitors are connected in series in a circuit, the total capacitance is...

less than the capacitance of the lowest rated capacitor.

REFER TO FIGURE 3 When more than two inductors of different inductances are connected in parallel in a circuit, the total inductance is...

less than the inductance of the lowest rated inductor.

which of the following best describes the contributing factors to thermal runaway in a nickel cadmium battery installed in an aircraft?

low internal resistance intensified by high cell temperatures and a high current discharge/charge rate in a constant potential charging system

Convert farads to picofarads by...

multiplying farads by 10 to the power of -12

Convert farads to microfarads by....

multiplying farads by 10 to the power of -6

The presence of any small amounts of potassium carbonate deposits on the top of nickel cadmium battery cells in service is an indication of

normal operation

which statement is true regarding an orthographic projection?

one view, two view, and three view drawings are the most common.

refer to figure 20. troubleshooting an open circuit with a voltmeter as shown in this circuit will do what?

permit the battery voltage to appear on the voltmeter

refer to figure 22. which illustration is correct concerning bias application and current (positive charge) flow?

picture 1

The amount of electricity a capacitor can store is directly proportional to the...

plate area and inversely proportional to the distance between the plates.

the purpose of providing a space underneath the plates in a lead acid battery's cell container is to

prevent sediment buildup from contacting the plates and causing a short circuit

refer to figure 18. The control valve switch must be placed in the neutral position when the landing gears are down to?

prevent the warning horn from sounding when the throttles are closed

Diodes are used in electrical power supply circuits primarily as...

rectifiers

Capacitors are sometimes used in dc circuits to...

smooth out slight pulsations in current/voltage

when a charging current is applied to a nickel cadmium batter, the cell emits gas

toward the end of the charging cycle

REFER TO FIGURE 9 How many instruments (volts-meters and ammeters) are installed correctly?

two: *Ammeters have to be connected in series and voltmeters are always connected in parallel with the element being analyzed

The potential difference between two conductors which are insulated from each other is measured in

volts

refer to figure 25. In a functional and operating circuit, the depicted logic gate's output will be 0 when?

when one or more inputs are 0

refer to figure 15. with the landing gear retracted, the red indicator light will not come on if an open occurs in which wire?

wire 19