NCATT AET Unofficial (Non-Figure
Questions) With Correct Answers 75pg
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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |ANSWER✔✔-B) |Sine |wave
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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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. |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED
|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 |- |VERIFIED
|ANSWER✔✔-A) |Armature, |Contacts, |Spring
59) |Aircraft |wire |is |normally |rated |at |what |voltage? |A) |28Vdc |B) |115Vac |C) |26Vac |- |VERIFIED
|ANSWER✔✔-B) |115Vac
60) |Transformers |are |considered |what |kind |of |filter?
A) |Band |pass |B) |Band |Stop |C) |High |Pass |D) |Low |Pass |- |VERIFIED |ANSWER✔✔-A) |Band |pass
61) |What |is |the |flow |of |electrons |through |a |conductor |called?
A) |Voltage |B) |Static |Electricity |C) |Current |D) |Resistance |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED
|ANSWER✔✔-D) |All |of |the |above
66) |Which |type |of |diagram |will |tell |the |size |of |an |electrical |wire?
Questions) With Correct Answers 75pg
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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |ANSWER✔✔-B) |Sine |wave
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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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. |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED
|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 |- |VERIFIED
|ANSWER✔✔-A) |Armature, |Contacts, |Spring
59) |Aircraft |wire |is |normally |rated |at |what |voltage? |A) |28Vdc |B) |115Vac |C) |26Vac |- |VERIFIED
|ANSWER✔✔-B) |115Vac
60) |Transformers |are |considered |what |kind |of |filter?
A) |Band |pass |B) |Band |Stop |C) |High |Pass |D) |Low |Pass |- |VERIFIED |ANSWER✔✔-A) |Band |pass
61) |What |is |the |flow |of |electrons |through |a |conductor |called?
A) |Voltage |B) |Static |Electricity |C) |Current |D) |Resistance |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED |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 |- |VERIFIED
|ANSWER✔✔-D) |All |of |the |above
66) |Which |type |of |diagram |will |tell |the |size |of |an |electrical |wire?
