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

At least 50% greater than the highest applied voltage

which requires the most electrical power during operation?

Two lights requiring 3 amps each in a 24v parallel system

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

plate area and inversely proportional to the distance between the plates

Capacitors are sometimes used in DC circuits to

Smooth out slight pulsations in the current/voltage

Convert farads to microfarads

Multiply farads by 10 to the power of 6

When more than two inductors of different inductances are connected in parallel in a circuit, the total inductance is (refer to fig.3)

less that the inductance of the lowest rated inductor

capacitors are sometimes used in DCV to

smooth out slight pulsations in current/voltage

in an AC circuit, the effective voltage is

less than the maximum instantaneous voltage

convert farads to picofarads

multiply farads by 10 to the power of 12

when inductors are connected in series in a circuit, the total inductance is

equal to the sum of the individual inductances

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

equal to the sum of all the capacitances

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.

When different rated capacitors are connected in parallel in a circuit, the total capacitance is (Note: C(T) = C(1) + C(2) + C(3) . . .)

equal to the sum of all the capacitances.

(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.

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

Decrease the length or increase the cross-sectional area.

Which requires the most electrical power during operation? (Note: 1 horsepower = 746 watts)

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

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

base is positive with respect to the emitter.

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

Heat or burn marks on the hardware.

Which is correct concerning a parallel circuit?

Total resistance will be smaller than the smallest resistor.

In nickel-cadmium batteries, a rise in cell temperature

causes a decrease in internal resistance.

(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 (voltage) charging system.

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

base is negative with respect to the emitter.

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FAA General

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Question	Answer
The working voltage of a capacitor in an AC circuit should be?	At least 50% greater than the highest applied voltage
which requires the most electrical power during operation?	Two lights requiring 3 amps each in a 24v parallel system
Unless otherwise specified. any values given for current in an AC circuit are assumed to be?	Effective values
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 basis for transformer operation in the use of alternating current is mutual	Induction
Capacitors are sometimes used in DC circuits to	Smooth out slight pulsations in the current/voltage
Convert farads to microfarads	Multiply farads by 10 to the power of 6
When more than two inductors of different inductances are connected in parallel in a circuit, the total inductance is (refer to fig.3)	less that the inductance of the lowest rated inductor
capacitors are sometimes used in DCV to	smooth out slight pulsations in current/voltage
the opposition offered by a coil to the floe of AC is called? (ignoring resistance)	inductive reactance
in an AC circuit, the effective voltage is	less than the maximum instantaneous voltage
convert farads to picofarads	multiply farads by 10 to the power of 12
what is the total capacitance of a certain circuit containing three capacitors with the capacitance of .25, .03, .12 microfarads respectively	.4uF
the term that describes the combined resistive force in an AC circuit is	impedance
what factors strengthen a coil inductor	adding coil close together
a 24v, 1 horsepower DC electric motor that is 80 % efficient requires 932.5 watts. how much power will a 12 v, 1horsepower motor that is 75% efficient require?	994.6 watts
how many amperes will a 28v generator be required to supply to a circuit containing five lamps in parallel, three of which have a resistance of 6ohms each and two of which have a resistance of 5ohms each	25.23 amperes
a 12v electric motor has 1,000 watts input and 1 horsepower output. maintaining the same efficiency, how much input power will a 24v, 1 horsepower electric motor require	1,00 watts
how much power must a 24v generator furnish to a system which contains the following loads one motor(75% efficient) 1/5 HP three position lights 20watts each one heating element 5amp one anti-collision light 3amp	450 watts
which effect does not apply to the movement of electrons flowing in a conductor	static energy
the potential difference between two conductors which are insulated from each other is measured in	volts
when inductors are connected in series in a circuit, the total inductance is	equal to the sum of the individual inductances
when different rated capacitors are connected in parallel in a circuit, the total capacitance is	equal to the sum of all the capacitances
what is the total capacitances of a circuit containing three capacitors in parallel with capacitances of .02, .05, .10	.170uF
what is the total capacitance of a certain circuit containing three capacitors with capacitances of .02, .05, .10	.0125uF
a 24v 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	24v
when calculating power in a reactive or inductive AC circuit, the true power is	less than the apparent power
how much power is being furnished to the circuit (refer to fig.4)	2,645 watts
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.
When different rated capacitors are connected in parallel in a circuit, the total capacitance is (Note: C(T) = C(1) + C(2) + C(3) . . .)	equal to the sum of all the capacitances.
(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.
Which of these will cause the resistance of a conductor to decrease?	Decrease the length or increase the cross-sectional area.
(Refer to Figure 23.) If an open occurs at R(1), the light	cannot be turned off.
.002 kV equals	2.0 volts.
What does the letter Q symbolize when measuring electrical charge?	Coulomb
(Refer to Figure 23.) If R(2) sticks in the up position, the light will	be on full bright.
Which requires the most electrical power during operation? (Note: 1 horsepower = 746 watts)	Two lights requiring 3 amperes each in a 24-volt parallel system.
(Refer to Figure 15.) With the landing gear retracted, the red indicator light will not come on if an open occurs in wire	19
What is the operating resistance of a 30-watt light bulb designed for a 28-volt system?	26 ohms.
In an N-P-N transistor application, the solid-state device is turned on when the	base is positive with respect to the emitter.
Which condition is an indication of improperly torqued cell link connections of a nickel-cadmium battery?	Heat or burn marks on the hardware.
Which is correct concerning a parallel circuit?	Total resistance will be smaller than the smallest resistor.
In nickel-cadmium batteries, a rise in cell temperature	causes a decrease in internal resistance.
(Refer to Figure 18.) When the landing gear is up and the throttles are retarded, the warning horn will not sound if an open occurs in wire	4
(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.
(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	cross feed position.
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.
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 (voltage) charging system.
In a P-N-P transistor application, the solid-state device is turned on when the	base is negative with respect to the emitter.
An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?	Inductance and frequency.
When referring to an electrical circuit diagram, what point is considered to be at zero voltage?	The ground reference.
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-ohm resistor?	0.93 ampere.
(Refer to Figure 17.) Which of the components is a potentiometer?	3
(Refer to Figure 64.) 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? (Note: R(t) = E^2/P)	24 ohms.
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 requires the most electrical power? (Note: 1 horsepower = 746 watts)	A 1/5-horsepower, 24-volt motor which is 75 percent efficient.
(Refer to Figure 14.) The total resistance of the circuit is	17 ohms.
Convert farads to picofarads by:	multiplying farads by 10 to the power of 12.
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.
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.
The correct way to connect a test voltmeter in a circuit is	in parallel with a unit.
(Refer to Figure 21.) Which symbol represents a variable resistor?	2
(Refer to Figure 24.) Which statement concerning the depicted logic gate is true?	Any input being 1 will produce a 1 output.
Which term means .001 ampere?	Milliampere
Through which material will magnetic lines of force pass the most readily?	Iron
(Refer to Figure 25.) In a functional and operating circuit, the depicted logic gate's output will be 0	when one or more inputs are 0.
The amount of electricity a capacitor can store is directly proportional to the	plate area and inversely proportional to the distance between the plates.
How can the state-of-charge of a nickel-cadmium battery be determined?	By a measured discharge.
(Refer to Figure 15.) Wire 7 is used to	close the PUSH-TO-TEST circuit.
(Refer to Figure 7.) If resistor R(3) is disconnected at terminal D, what will the ohmmeter read?	Infinite resistance.
Electrostatic fields are also known as	dielectric fields.
(Refer to Figure 6.) If resistor R(5) is disconnected at the junction of R(4) and R(3) as shown, what will the ohmmeter read?	3 ohms.
(Refer to Figure 13.) Determine the total current flow in the circuit.	1.4 amperes.
A circuit has an applied voltage of 30 volts and a load consisting of a 10-ohm resistor in series with a 20-ohm resistor. What is the voltage drop across the 10-ohm resistor?	10 volts.
(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	5
(Refer to Figure 11.) Find the voltage across the 8-ohm resistor.	24 volts.
(Refer to Figure 22.) Which illustration is correct concerning bias application and current (positive charge) flow?	1
What factors strengthen a coil inductor?	Adding coils close together.
What is the basic unit of electrical quantity?	Coulomb
When a charging current is applied to a nickel cadmium battery, the cells emit gas	toward the end of the charging cycle.
(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.
(Refer to Figure 11.) Find the total current flowing in the wire between points C and D.	3.0 amperes.
What unit is used to express electrical power?	Watt
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.
Diodes are used in electrical power supply circuits primarily as	rectifiers.
(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.
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? (Note: 1 horsepower = 746 watts)	1,000 watts.
A fully charged lead-acid battery will not freeze until extremely low temperatures are reached because	most of the acid is in the solution.
Transfer of electric energy from one circuit to another without the aid of electrical connections	is called induction.
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.
(Refer to Figure 15.) When the landing gear is down, the green light will not come on if an open occurs in wire	6
(Refer to Figure 64.) A 48-volt source is required to furnish 192 watts to a parallel circuit consisting of three resistors of equal value. What is the value of each resistor?	36 ohms.
Capacitors are sometimes used in DC circuits to	smooth out slight pulsations in current/voltage.
(Refer to Figure 2.) What is the total capacitance of a circuit containing three capacitors with capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively?	.0125 uF.
What happens to the current in a voltage step-up transformer with a ratio of 1 to 4?	The current is stepped down by a 1 to 4 ratio.
During discharge, nickel-cadmium batteries will show a lower liquid level than when at full charge because	the electrolyte becomes absorbed into the plates.
What is the likely result, if any, of servicing and charging nickel-cadmium and lead-acid batteries together in the same service area?	Contamination of both types of batteries would occur.
The opposition offered by a coil to the flow of alternating current (ignoring resistance) is called	inductive reactance.
Which effect does not apply to the movement of electrons flowing in a conductor?	Static energy.
(Refer to Figure 10.) What is the measured voltage of the series-parallel circuit between terminals A and B?	3.0 volts.
Which of the following best describes the operating principal in a nickel-cadmium battery installed in an aircraft?	To completely charge a nickel-cadmium battery, some gassing must take place; thus, some water will be used.
In a parallel circuit with three 6-ohm resistors across a 12-volt battery, what is the total current (It) value in the circuit?	6 amps.
A thermal switch, or thermal protector, as used in an electric motor, is designed to	open the circuit in order to allow cooling of the motor.
Forward biasing of a solid-state device will cause the device to	conduct
(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 wire	6.
(Refer to Figure 9.) How many instruments (voltmeters and ammeters) are installed correctly?	Two.
What will a voltmeter read if properly connected across a closed switch in a circuit with electrical power on?	Zero voltage.
The method used to rapidly charge a nickel-cadmium battery utilizes	constant voltage and varying current.
(Refer to Figure 26.) Which of the logic gate output conditions is correct with respect to the given inputs?	2
The electrolyte of a nickel cadmium battery is highest when the battery is	in a fully charged condition.
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.
(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, and 16.
(Refer to Figure 20.) Troubleshooting an open circuit with a voltmeter as shown in this circuit will	permit the battery voltage to appear on the voltmeter.
(Refer to Figure 18.) The control valve switch must be placed in the neutral position when the landing gear is down to	prevent the warning horn from sounding when the throttles are closed.
(Refer to Figure 8.) With an ohmmeter connected into the circuit as shown, what will the ohmmeter read?	10 ohms.
The presence of any small amount of potassium carbonate deposits on the top of nickel-cadmium battery cells in service is an indication of	normal operation.
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.
Which of the following are commonly used as a rectifier in electrical circuits?	Diodes
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 ohm.
The voltage drop in a circuit of known resistance is dependent on	the amperage of the circuit.
What is the opposition to the flow of AC produced by an electromagnetic field (EMF) with generated back voltage called?	Inductive reactance.
When referencing resistance in a parallel DC circuit, which of the following statements is true?	The total current is equal to the sum of the currents through the individual branches of the circuit.
(Refer to Figure 12.) Find the total resistance of the circuit.	21.2 ohms.
Which of the following logic gates will provide an active high out only when all inputs are different?	XOR.
What may result if water is added to a nickel-cadmium battery when it is not fully charged?	Excessive spewing is likely to occur during the charging cycle.
A 24-volt, 1-horsepower DC electric motor that is 80 percent efficient requires 932.5 watts. How much power will a 12-volt, 1-horsepower DC electric motor that is 75 percent efficient require? (Note: 1 horsepower = 746 watts)	994.6 watts.
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.
(Refer to Figure 4.) How much power is being furnished to the circuit?	2,645 watts.
The term that describes the combined resistive forces in an AC circuit is	impedance
(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?	Three
(Refer to Figure 16.) When electrical power is applied to the bus, which relays are energized?	PCC and TCC.
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.
The potential difference between two conductors which are insulated from each other is measured in	volts.
Convert farads to microfarads by	multiplying farads by 10 to the power of 6
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.
If each cell, connected in series, equals 2 volts, how would a 12-cell lead acid battery be rated?	24 volts.
When calculating power in a reactive or inductive AC circuit, the true power is	less than the apparent power.
The electrolyte of a nickel-cadmium battery is the lowest when the battery is	in a discharged condition.
Typical application for zener diodes is as	voltage regulators.
(Refer to Figure 17.) The electrical symbol represented at number 5 is a variable	capacitor
Aircraft Drawings
(Refer to Figure 36.) The diameter of the holes in the finished object is	1/2 inch.
The measurements showing the ideal or 'perfect' sizes of parts on drawings are called	dimensions
(Refer to Figure 41.) Determine the fuel consumption with the engine operating at cruise, 2,350 RPM.	55.3 pounds per hour.
One purpose for schematic diagrams is to show the	functional location of components within a system.
A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is to	draw two non-parallel chord lines across the circle and then a corresponding perpendicular bisector lines across each chord line.
A hydraulic system schematic drawing typically indicates the	direction of fluid flow through the system.
In the reading of aircraft blueprints, the term 'tolerance,' used in association with aircraft parts or components,	is the difference between extreme permissible dimensions that a part may have and still be acceptable.
What type of diagram shows the wire size required for a particular installation?	A wiring diagram.
(Refer to Figure 29.) Identify the left side view of the object shown.	3
A line used to show an edge which is not visible is a	hidden line.
What material symbol is frequently used in drawings to represent all metals?	Cast iron.
What is the class of working drawing that is the description/depiction of a single part?	Detail drawing.
Schematic diagrams are best suited for which of the following?	Troubleshooting system malfunctions.
(Refer to Figure 35.) Identify the extension line.	3
(Refer to Figure 30.) Identify the bottom view of the object.	1
(Refer to Figure 38.) An aircraft reciprocating engine has a 2,800 cubic-inch displacement, develops 2,000 brake-horsepower, and indicates 270 brake mean effective pressure. What is the engine speed (RPM)?	2,100
In what type of electrical diagram are images of components used instead of conventional electrical symbols?	A pictorial diagram.
(Refer to Figure 34.) What is the dimension of the chamfer?	0.0625 X 45°.
What type of line is normally used in a drawing or blueprint that indicates invisible edges or contours?	Medium-weight short dashes, evenly spaced.
(Refer to Figure 27.) In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow.	3
What is used to indicate that a surface must be machine finished?	Finished marks.
What type of drawing line consists of alternating long and short lines?	Center
Zone numbers on aircraft blueprints are used to	locate parts, sections, and views on large drawings.
(Refer to Figure 40.) Determine the proper tension for a 3/16-inch cable (7 x 19 extra flex) if the temperature is 87°F.	125 pounds.
(Refer to Figure 40.) Determine the proper tension for a 1/8-inch cable (7 x 19) if the temperature is 80°F.	70 pounds.
What should be the first step of the procedure in sketching an aircraft wing skin repair?	Block in the views.
(Refer to Figure 28.) Identify the bottom view of the object shown.	2
Which of the following terms is/are used to indicate specific measured distances from the datum and/or other points identified by the manufacturer, to points in or on the aircraft?	Station numbers.
(Refer to Figure 39.) Determine the maximum length of a No. 16 cable to be installed from a bus to the equipment in a 28-volt system with a 25-ampere intermittent load and a 1-volt drop.	8 feet.
Working drawings may be divided into three classes. They are:	detail drawings, assembly drawings, and installation drawings.
(Refer to Figure 34.) What would be the minimum diameter of 4130 round stock required for the construction of the clevis that would produce a machined surface?	1 inch.
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.
In a sectional view drawing, what sections illustrate particular parts of an object?	Removed.
(1) Sketches are usually made with the aid of drafting instruments. (2) Sketches are usually more complicated to make when using graph paper. Regarding the above statements,	Neither 1 nor 2 is true.
Which statement is applicable when using a sketch for making a part?	The sketch must show all information to manufacture the part.
(Refer to Figure 34.) What is the maximum diameter of the hole for the clevis pin?	0.3175.
(Refer to Figure 38.) An aircraft reciprocating engine has a 2,800 cubic-inch displacement and develops 2,000 brake-horsepower at 2,200 RPM. What is the brake mean effective pressure?	257.5.
A drawing in which the subassemblies or parts are shown as brought together on the aircraft is called	an installation drawing.
For sketching purposes, almost all objects are composed of one or some combination of six basic shapes; these include the	triangle, circle, cube, cylinder, cone, and sphere.
(Refer to Figure 39.) Determine the minimum wire size of a single cable in a bundle carrying a continuous current of 20 amperes 10 feet from the bus to the equipment in a 28-volt system with an allowable 1-volt drop.	No. 12.
(Refer to Figure 39.) Determine the cable size of a 40-foot length of single cable in free air, with a continuous rating, running from a bus to the equipment in a 28-volt system with a 15-ampere load and a 1-volt drop.	No. 10.
(Refer to Figure 32.) What is the next step required for a working sketch of the illustration?	Sketch extension and dimension lines.
What is the allowable manufacturing tolerance for a bushing where the outside dimensions shown on the blueprint are: 1.0625 + .0025 -.0003?	.0028.
Which statement is true regarding an orthographic projection?	One-view, two-view, and three-view drawings are the most common.
(Refer to Figure 41.) Determine how much fuel would be required for a 30-minute reserve operating at 2,300 RPM.	25.3 pounds.
The drawings often used in illustrated parts manuals are	exploded-view drawings.
(Refer to Figure 31.) What are the proper procedural steps for sketching repairs and alterations?	3, 1, 4, and 2.
In order to locate wing and stabilizer frames, what numbering system is used?	Station numbers.
Sketches are usually made easier by the use of	graph paper.
(1) A detail 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,	both 1 and 2 are true.
(Refer to Figure 38.) An aircraft reciprocating engine has a 1,830 cubic-inch displacement and develops 1,250 brake-horsepower at 2,500 RPM. What is the brake mean effective pressure?	217
(Refer to Figure 39.) Determine the maximum length of a No. 12 single cable that can be used between a 28-volt bus and a component utilizing 20 amperes continuous load in free air with a maximum acceptable 1-volt drop.	26.5 feet.
(Refer to Figure 33.) Which material section-line symbol indicates cast iron?	3
(Refer to Figure 37.) The vertical distance between the top of the plate and the bottom of the lowest 15/64-inch hole is	2.367.
(Refer to Figure 34.) Using the information, what size drill would be required to drill the clevis bolt hole?	5/16 inch.
When reading a blueprint, a dimension is given as 4.387 inches +.005 -.002. Which statement is true?	The minimum acceptable size is 4.385 inches.
Fluid lines and fittings
Which of the following statements is true regarding minimum allowable bend radii for 1.5 inches OD or less aluminum alloy and steel tubing of the same size?	The minimum radius for steel is greater than for aluminum.
What is the color of an AN steel flared-tube fitting?	Black
The material specifications for a certain aircraft require that a replacement oil line be fabricated from 3/4-inch 0.072 5052-0 aluminum alloy tubing. What is the inside dimension of this tubing?	0.606 inch.
When flaring aluminum tubing for use with AN fittings, the flare angle must be	37°.
During installation, MS flareless fittings	are normally tightened by turning the nut a specified amount, unless the manufacturer lists torque values.
What is an advantage of a double flare on aluminum tubing?	More resistant to damage when the joint is tightened.
A certain amount of slack must be left in a flexible hose during installation because, when under pressure, it	contracts in length and expands in diameter.
A scratch or nick in aluminum tubing can be repaired provided it does not	appear in the heel of a bend.
Scratches or nicks on the straight portion of aluminum alloy tubing may be repaired if they are no deeper than	10 percent of the wall thickness.
Metal tubing fluid lines are sized by wall thickness and	outside diameter in 1/16 inch increments.
When installing bonded clamps to support metal tubing,	remove paint or anodizing from tube at clamp location.
Which of the following tools is best to use when cutting soft aluminum tubing?	Hand operated wheel-type tubing cutter.
When installing a castle nut, and the nut castellation does not align with the cotter pin hole in the bolt within the torque range, the acceptable practice is to	change the nut or washer and try again.
A gas or fluid line marked with the letters PHDAN is	used to carry a hazardous substance.
When a Teflon hose has been in service for a time, what condition may have occurred and/or what precaution should be taken when it is temporarily removed from the aircraft?	The hose may have developed a set, or have been manufactured with a pre-set shape, and must be supported to maintain its shape.
Rolling-type flaring tools are used to flare X, X, and X tubing.	Soft copper, aluminum, brass.
The term 'cold flow' is generally associated with	impressions left in natural or synthetic rubber hose material.
The primary purpose of providing suitable bends in fluid and pneumatic metal tubing runs is to	prevent excessive stress on the tubing.
Which tubings have the characteristics (high strength, abrasion resistance) necessary for use in a high-pressure (3,000 PSI) hydraulic system for operation of landing gear and flaps?	Corrosion-resistant steel annealed or 1/4H.
Which statement is true regarding the variety of symbols utilized on the identifying color-code bands that are currently used on aircraft plumbing lines?	Symbols are always black against a white background regardless of line content.
Which coupling nut should be selected for use with 1/2-inch aluminum oil lines which are to be assembled using flared tube ends and standard AN nuts, sleeves, and fittings?	AN-818-8.
Excessive stress on fluid or pneumatic metal tubing caused by expansion and contraction due to temperature changes can best be avoided by	providing bends in the tubing.
In a metal tubing installation,	tension is undesirable because pressurization will cause it to expand and shift.
Which statement is true regarding flattening of tubing in bends?	The small diameter of the flattened portion must not be less than 75 percent of the original outside diameter.
Flexible lines must be installed with	a slack of 5 to 8 percent of the length.
Flexible hose used in aircraft systems is classified in size according to the	inside diameter.
Which of the following hose materials are compatible with phosphate-ester base hydraulic fluids?	Butyl and Teflon.
(1) Bonded clamps are used for support when installing metal tubing. (2) Unbonded clamps are used for support when installing wiring. Regarding the above statements,	both 1 and 2 are true.
In most aircraft hydraulic systems, two-piece tube connectors consisting of a sleeve and a nut are used when a tubing flare is required. The use of this type connector eliminates	the possibility of reducing the flare thickness by wiping or ironing during the tightening process.
A 3/8 inch aircraft high pressure flexible hose as compared to 3/8 inch metal tubing used in the same system will	have equivalent flow characteristics.
If a flared tube coupling nut is overtightened, where is the tube most likely to be weakened/damaged?	At the sleeve, fitting nut, or tube flare.
Which statement concerning Bernoulli's principle is true?	The pressure of a fluid decreases at points where the velocity of the fluid increases.
The maximum distance between end fittings to which a straight hose assembly is to be connected is 50 inches. The minimum hose length to make such a connection should be	52-1/2 inches.
Hydraulic tubing, which is damaged in a localized area to such an extent that repair is necessary, may be repaired	by cutting out the damaged area and utilizing a swaged tube fitting to join the tube ends.
materials and processes

Created by: jbolyard13

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