NCATT AET UNOFFICIAL (NON-FIGURE
QUESTIONS) 400+ TEST BANK
QUESTIONS WITH COMPLETE
SOLUTIONS
40) The basic requirements for sustaining oscillations in an oscillator are a power
supply, FDD, amplifier, and __________.
A) regenerative feedback B) degenerative feedback
C) negative feedback D) Constructive feedback - Answer-A) regenerative feedback
45) If the positive alteration of a square wave is 100 µsec in duration, then the PRF is:
A) 5 kHz B) 10 kHz
C) 50 kHz D) 100 kHz - Answer-45) A *PRT includes negative alternation = 200 µsec
tota
46) What type of output waveform is produced by an astable multivibrator?
A) Sine wave B) Saw tooth
C) Square wave or rectangular D) Rectangular wave - Answer-C) Square wave or
rectangular
47) The astable multivibrator is a:
A) Sweep generator B) Divide by two circuit
C) Time base generator D) Free running oscillator - Answer-D) Free running oscillator
48) The monostable multivibrator output PRF is determined by the:
A) Input trigger frequency B) width of the input trigger
C) Cutoff time of Q1 and Q2 D) discharge time of C1 and C2 - Answer-A) Input trigger
frequency
49) With a transistor amplifier operating in class B, the collector current will flow for what
percentage/how many degrees of the input signal? [Alternate: "the amplifier's collector
current is cutoff for:"] A) 10% B) 20% C) 50% D) 70.7%
(or)
A) 90o B) 360o C) 180o D) More than 180o but less than 360o - Answer-C) 180o
51) The interchange of energy between the inductor and capacitor in a tank circuit is
called what?
A) Damping B) degeneration
C) Loading effect D) the flywheel effect - Answer-D) the flywheel effect
,52) The amplifier's class of operation is determined by what?
A) Fidelity B) efficiency
C) output waveform D) amount of forward bias - Answer-D) amount of forward bias
53) What is the resistance of normally closed contacts when the relay is de-energized?
A) 0Ω / short B) Infinite Ω C) 50Ω - Answer-A) 0Ω / short
54) What distinguishes a solenoid from a basic relay?
A) A coil to create a magnetic field. B) The plunger (armature) pulled into the coil.
C) Has multiple Normally Open (NO) or Normally Closed (NC) contacts. - Answer-B)
The plunger (armature) pulled into the coil.
55) What part of a basic relay returns the armature to its de-energized position?
A) The coil B) The core C) The spring D) The contacts - Answer-C) The spring
56) How many paths of current are required for a holding relay coil?
A) One B) Two C) Three D) Four - Answer-B) Two
57) What parts of a relay comprise the Primary (Control) Circuit?
A) Armature, Contacts, Spring B) Core & Coil C) Moveable plunger, Coil, armature -
Answer-B) Core & Coil
58) What parts of a relay comprise the Secondary (Controlled) Circuit?
A) Armature, Contacts, Spring B) Core & Coil C) Moveable plunger, Coil, armature -
Answer-A) Armature, Contacts, Spring
59) Aircraft wire is normally rated at what voltage? A) 28Vdc B) 115Vac C) 26Vac -
Answer-B) 115Vac
60) Transformers are considered what kind of filter?
A) Band pass B) Band Stop C) High Pass D) Low Pass - Answer-A) Band pass
33) The "negative temperature coefficient" of a thermistor means that as temperature
increases, resistance will do what?
A) increase B) decrease C) Remain the same - Answer-B) decrease
34) Using the swamping resistor for thermal stability, what type of feedback is
developed to control the amplifier?
A) Regenerative B) Degenerative
C) Positive feedback - Answer-B) Degenerative
35) Which of the following devices is used to dissipate heat into the air?
A) Heat sink B) Circuit board
C) Swamping resistor D) Coupling Capacitor - Answer-A) Heat sink
,36) What type of amplifier coupling is used that can amplify DC voltages as well as AC
signals?
A) LC B) RC
C) Direct D) Transformer - Answer-C) Direct
37) In a common collector amplifier, degenerative feedback is how many degrees out of
phase with the input signal?
A) 0 degrees B) 90 degrees
C) 180 degrees D) 270 degrees - Answer-C) 180 degrees
38) The common base amplifier has a voltage gain ________ than one, but a current
gain _______ than one.
A) Less than one, less than one B) Greater than one, less than one
C) Less than one, greater than one D) Greater than one, greater than one - Answer-38)
B (*C is correct for a "Common Collector", D is correct for a "Common Emitter")
39) What type of waveform is produced by a sinusoidal oscillator?
A) Saw tooth B) Sine wave
C) Square wave D) Rectangular - Answer-B) Sine wave
61) What is the flow of electrons through a conductor called?
A) Voltage B) Static Electricity C) Current D) Resistance - Answer-C) Current
62) What maintenance practice is best for Foreign Object Damage (FOD) prevention?
A) Tool management B) FOD walk / sweep
C) Clean as you go D) All of these - Answer-A) Tool management or D) All of these
63) Most accidents are caused by what?
A) Unsafe acts of individuals C) Improper equipment installation.
B) Using improper parts D) All of the above - Answer-D) All of the above
64) When should a person stop administering mouth to mouth resuscitation/CPR?
A) When the person administering CPR becomes physically tired
B) When person becomes conscious C) When medical help arrives D) All of the above -
Answer-D) All of the above
66) Which type of diagram will tell the size of an electrical wire?
A) Schematic diagram B) Block diagram C) Wiring diagram - Answer-C) Wiring diagram
67) What does the phrase "cradle to grave" refer to?
A) Hazardous waste management programs. B) Waste Disposal programs. - Answer-A)
Hazardous waste management programs.
68) Who is responsible for providing an (M)SDS with chemicals?
A) Employer B) OSHA C) Employee D) Chemical manufacturer - Answer-D) Chemical
manufacturer
, 69) When installing equipment in aircraft, what references do you use?
A) Approved flight manual B) STCs (Supplemental Type Certificates)
C) Aircraft service or maintenance manual. D) All of these - Answer-D) All of these
70) Why is stainless steel safety wire used with steel bolts?
A) Prevent dissimilar metal corrosion B) Prevent fretting corrosion
C) Prevent Intergranular corrosion D) None of the above - Answer-A) Prevent dissimilar
metal corrosion *a.k.a. Galvanic corrosion
71) Can you use .032" safety wire in a .045" hole? A) Yes B) No - Answer-A) Yes
72) What should be removed at preflight?
A) Red streamers, covers, plugs B) Anything that states "Remove Before Flight"
C) Both A & B - Answer-C) Both A & B
73) What happens to wire resistance if the length is increased?
A) It increases. B) It decreases. C) It stays the same. - Answer-A) It increases.
74) What happens to wire resistance if the cross-section (area) increases?
A) increases B) decreases C) stays the same - Answer-B) decreases
75) What does it mean if there is no 4th band on a resistor?
A) +/- 5% tolerance B) +/- 10% tolerance C) +/- 20% tolerance - Answer-C) +/- 20%
tolerance
76) What is the leading cause of accidents? A) Human Error B) Mechanical failures -
Answer-A) Human Error
77) What must be done to a torque wrench when finished?
A) Return it to the tool room B) Reset to the minimum setting
C) Leave it set on the last reading - Answer-B) Reset to the minimum setting
78) How do you move elevators?
A) Move the control wheel left or right B) Move the foot pedals
C) Move the yoke forward or backward D) Press the button for the desired floor -
Answer-C) Move the yoke forward or backward
79) What does a filter in an electrical circuit consist of?
A) A capacitor and an inductor B) A diode and a resistor
C) A capacitor and a diode D) A transistor and a resistor - Answer-A) A capacitor and
an inductor
80) How do you clean corrosion from aluminum?
A) Steel Wool B) Emery cloth, aluminum wool C) Brass wire brush - Answer-B) Emery
cloth, aluminum wool
QUESTIONS) 400+ TEST BANK
QUESTIONS WITH COMPLETE
SOLUTIONS
40) The basic requirements for sustaining oscillations in an oscillator are a power
supply, FDD, amplifier, and __________.
A) regenerative feedback B) degenerative feedback
C) negative feedback D) Constructive feedback - Answer-A) regenerative feedback
45) If the positive alteration of a square wave is 100 µsec in duration, then the PRF is:
A) 5 kHz B) 10 kHz
C) 50 kHz D) 100 kHz - Answer-45) A *PRT includes negative alternation = 200 µsec
tota
46) What type of output waveform is produced by an astable multivibrator?
A) Sine wave B) Saw tooth
C) Square wave or rectangular D) Rectangular wave - Answer-C) Square wave or
rectangular
47) The astable multivibrator is a:
A) Sweep generator B) Divide by two circuit
C) Time base generator D) Free running oscillator - Answer-D) Free running oscillator
48) The monostable multivibrator output PRF is determined by the:
A) Input trigger frequency B) width of the input trigger
C) Cutoff time of Q1 and Q2 D) discharge time of C1 and C2 - Answer-A) Input trigger
frequency
49) With a transistor amplifier operating in class B, the collector current will flow for what
percentage/how many degrees of the input signal? [Alternate: "the amplifier's collector
current is cutoff for:"] A) 10% B) 20% C) 50% D) 70.7%
(or)
A) 90o B) 360o C) 180o D) More than 180o but less than 360o - Answer-C) 180o
51) The interchange of energy between the inductor and capacitor in a tank circuit is
called what?
A) Damping B) degeneration
C) Loading effect D) the flywheel effect - Answer-D) the flywheel effect
,52) The amplifier's class of operation is determined by what?
A) Fidelity B) efficiency
C) output waveform D) amount of forward bias - Answer-D) amount of forward bias
53) What is the resistance of normally closed contacts when the relay is de-energized?
A) 0Ω / short B) Infinite Ω C) 50Ω - Answer-A) 0Ω / short
54) What distinguishes a solenoid from a basic relay?
A) A coil to create a magnetic field. B) The plunger (armature) pulled into the coil.
C) Has multiple Normally Open (NO) or Normally Closed (NC) contacts. - Answer-B)
The plunger (armature) pulled into the coil.
55) What part of a basic relay returns the armature to its de-energized position?
A) The coil B) The core C) The spring D) The contacts - Answer-C) The spring
56) How many paths of current are required for a holding relay coil?
A) One B) Two C) Three D) Four - Answer-B) Two
57) What parts of a relay comprise the Primary (Control) Circuit?
A) Armature, Contacts, Spring B) Core & Coil C) Moveable plunger, Coil, armature -
Answer-B) Core & Coil
58) What parts of a relay comprise the Secondary (Controlled) Circuit?
A) Armature, Contacts, Spring B) Core & Coil C) Moveable plunger, Coil, armature -
Answer-A) Armature, Contacts, Spring
59) Aircraft wire is normally rated at what voltage? A) 28Vdc B) 115Vac C) 26Vac -
Answer-B) 115Vac
60) Transformers are considered what kind of filter?
A) Band pass B) Band Stop C) High Pass D) Low Pass - Answer-A) Band pass
33) The "negative temperature coefficient" of a thermistor means that as temperature
increases, resistance will do what?
A) increase B) decrease C) Remain the same - Answer-B) decrease
34) Using the swamping resistor for thermal stability, what type of feedback is
developed to control the amplifier?
A) Regenerative B) Degenerative
C) Positive feedback - Answer-B) Degenerative
35) Which of the following devices is used to dissipate heat into the air?
A) Heat sink B) Circuit board
C) Swamping resistor D) Coupling Capacitor - Answer-A) Heat sink
,36) What type of amplifier coupling is used that can amplify DC voltages as well as AC
signals?
A) LC B) RC
C) Direct D) Transformer - Answer-C) Direct
37) In a common collector amplifier, degenerative feedback is how many degrees out of
phase with the input signal?
A) 0 degrees B) 90 degrees
C) 180 degrees D) 270 degrees - Answer-C) 180 degrees
38) The common base amplifier has a voltage gain ________ than one, but a current
gain _______ than one.
A) Less than one, less than one B) Greater than one, less than one
C) Less than one, greater than one D) Greater than one, greater than one - Answer-38)
B (*C is correct for a "Common Collector", D is correct for a "Common Emitter")
39) What type of waveform is produced by a sinusoidal oscillator?
A) Saw tooth B) Sine wave
C) Square wave D) Rectangular - Answer-B) Sine wave
61) What is the flow of electrons through a conductor called?
A) Voltage B) Static Electricity C) Current D) Resistance - Answer-C) Current
62) What maintenance practice is best for Foreign Object Damage (FOD) prevention?
A) Tool management B) FOD walk / sweep
C) Clean as you go D) All of these - Answer-A) Tool management or D) All of these
63) Most accidents are caused by what?
A) Unsafe acts of individuals C) Improper equipment installation.
B) Using improper parts D) All of the above - Answer-D) All of the above
64) When should a person stop administering mouth to mouth resuscitation/CPR?
A) When the person administering CPR becomes physically tired
B) When person becomes conscious C) When medical help arrives D) All of the above -
Answer-D) All of the above
66) Which type of diagram will tell the size of an electrical wire?
A) Schematic diagram B) Block diagram C) Wiring diagram - Answer-C) Wiring diagram
67) What does the phrase "cradle to grave" refer to?
A) Hazardous waste management programs. B) Waste Disposal programs. - Answer-A)
Hazardous waste management programs.
68) Who is responsible for providing an (M)SDS with chemicals?
A) Employer B) OSHA C) Employee D) Chemical manufacturer - Answer-D) Chemical
manufacturer
, 69) When installing equipment in aircraft, what references do you use?
A) Approved flight manual B) STCs (Supplemental Type Certificates)
C) Aircraft service or maintenance manual. D) All of these - Answer-D) All of these
70) Why is stainless steel safety wire used with steel bolts?
A) Prevent dissimilar metal corrosion B) Prevent fretting corrosion
C) Prevent Intergranular corrosion D) None of the above - Answer-A) Prevent dissimilar
metal corrosion *a.k.a. Galvanic corrosion
71) Can you use .032" safety wire in a .045" hole? A) Yes B) No - Answer-A) Yes
72) What should be removed at preflight?
A) Red streamers, covers, plugs B) Anything that states "Remove Before Flight"
C) Both A & B - Answer-C) Both A & B
73) What happens to wire resistance if the length is increased?
A) It increases. B) It decreases. C) It stays the same. - Answer-A) It increases.
74) What happens to wire resistance if the cross-section (area) increases?
A) increases B) decreases C) stays the same - Answer-B) decreases
75) What does it mean if there is no 4th band on a resistor?
A) +/- 5% tolerance B) +/- 10% tolerance C) +/- 20% tolerance - Answer-C) +/- 20%
tolerance
76) What is the leading cause of accidents? A) Human Error B) Mechanical failures -
Answer-A) Human Error
77) What must be done to a torque wrench when finished?
A) Return it to the tool room B) Reset to the minimum setting
C) Leave it set on the last reading - Answer-B) Reset to the minimum setting
78) How do you move elevators?
A) Move the control wheel left or right B) Move the foot pedals
C) Move the yoke forward or backward D) Press the button for the desired floor -
Answer-C) Move the yoke forward or backward
79) What does a filter in an electrical circuit consist of?
A) A capacitor and an inductor B) A diode and a resistor
C) A capacitor and a diode D) A transistor and a resistor - Answer-A) A capacitor and
an inductor
80) How do you clean corrosion from aluminum?
A) Steel Wool B) Emery cloth, aluminum wool C) Brass wire brush - Answer-B) Emery
cloth, aluminum wool
