AMS 366 TEST 3 QUESTIONS WITH ACCURATE
ANSWERS A+ GRADED
What is required when operating two aircraft an generators in parallel? - ANSWER
Frequency and voltage must both be equal
How many cycles of ac voltage are produced in a six-pole alternator of the
revolving-field type for each revolution of the rotor? - ANSWER three
The voltage output of an alternator may be regulated by controlling the - ANSWER
Voltage output of the DC exciter
One advantage of using ac electrical power in an aircraft is - ANSWER Greater ease in
stepping the voltage up or down
Certain transport aircraft use ac electrical power for all normal operation and battery
furnished dc electrical power for standby emergency use. In aircraft of this type that
operate no dc generators, the batteries are kept charged by - ANSWER Rectifiers which
use the aircraft's ac generators as a source of power
The major advantages of alternating current over direct current is the fact that its current
and voltage can easily be increased or decreased - ANSWER By means of a transformer
The indicator-type inverter output voltage is controlled by the - ANSWER dc stator field
,current
Aircraft which operate only ac generators as a primary source of electrical power
normally provide current suitable for battery charging through the use of - ANSWER A
stepdown transformer and a rectifier
A battery-generator system provides direct current. On installations requiring alternating
current from the battery-generator system, it is necessary to have - ANSWER An inverter
In an ac circuit with no phase lead or lag, which is true? - ANSWER Real power equals
apparent power
What is the frequency of an alternator dependent upon? - ANSWER RPM
CSD driven generators are usually cooled by - ANSWER Oil spray
A CSD unit drives a generator through the use of - ANSWER A variable hydraulic pump
and hydraulic motor
Integrated drive generators (IDG) employ a type of high output ac generator that utilizes
- ANSWER A brushless system to produce current
If the integrated drive generator (IDG) scavenge oil filter is contaminated with metal, you
should - ANSWER Remove and replace the IDG
, When necessary during operation, CSD disconnect is usually accomplished by - ANSWER
A switch in the cockpit
A CSD unit that is disconnected in flight, due to a malfunction such as overtemperature,
may be reconnected - ANSWER Only on the ground by maintenance personnel
What is the most accurate type of frequency-measuring instrument? - ANSWER
Integrated circuit chip having a clock circuit
When handling a high voltage capacitor in an electrical circuit, be sure it - ANSWER Is
fully discharged before removing it from the circuit
How can it be determined if a transformer winding has some of its turns shorted
together? - ANSWER The transformer will get hot in normal operation
If the (+) terminal of a voltmeter is connected to the (-) terminal of the source voltage
and the (-) terminal of the meter is connected to the (+) terminal of the source voltage,
the voltmeter will read - ANSWER Backwards
How should a voltmeter be connected? - ANSWER In parallel with the load
Why are the iron cores of most induction coils laminated? - ANSWER To reduce the
effects of eddy currents
ANSWERS A+ GRADED
What is required when operating two aircraft an generators in parallel? - ANSWER
Frequency and voltage must both be equal
How many cycles of ac voltage are produced in a six-pole alternator of the
revolving-field type for each revolution of the rotor? - ANSWER three
The voltage output of an alternator may be regulated by controlling the - ANSWER
Voltage output of the DC exciter
One advantage of using ac electrical power in an aircraft is - ANSWER Greater ease in
stepping the voltage up or down
Certain transport aircraft use ac electrical power for all normal operation and battery
furnished dc electrical power for standby emergency use. In aircraft of this type that
operate no dc generators, the batteries are kept charged by - ANSWER Rectifiers which
use the aircraft's ac generators as a source of power
The major advantages of alternating current over direct current is the fact that its current
and voltage can easily be increased or decreased - ANSWER By means of a transformer
The indicator-type inverter output voltage is controlled by the - ANSWER dc stator field
,current
Aircraft which operate only ac generators as a primary source of electrical power
normally provide current suitable for battery charging through the use of - ANSWER A
stepdown transformer and a rectifier
A battery-generator system provides direct current. On installations requiring alternating
current from the battery-generator system, it is necessary to have - ANSWER An inverter
In an ac circuit with no phase lead or lag, which is true? - ANSWER Real power equals
apparent power
What is the frequency of an alternator dependent upon? - ANSWER RPM
CSD driven generators are usually cooled by - ANSWER Oil spray
A CSD unit drives a generator through the use of - ANSWER A variable hydraulic pump
and hydraulic motor
Integrated drive generators (IDG) employ a type of high output ac generator that utilizes
- ANSWER A brushless system to produce current
If the integrated drive generator (IDG) scavenge oil filter is contaminated with metal, you
should - ANSWER Remove and replace the IDG
, When necessary during operation, CSD disconnect is usually accomplished by - ANSWER
A switch in the cockpit
A CSD unit that is disconnected in flight, due to a malfunction such as overtemperature,
may be reconnected - ANSWER Only on the ground by maintenance personnel
What is the most accurate type of frequency-measuring instrument? - ANSWER
Integrated circuit chip having a clock circuit
When handling a high voltage capacitor in an electrical circuit, be sure it - ANSWER Is
fully discharged before removing it from the circuit
How can it be determined if a transformer winding has some of its turns shorted
together? - ANSWER The transformer will get hot in normal operation
If the (+) terminal of a voltmeter is connected to the (-) terminal of the source voltage
and the (-) terminal of the meter is connected to the (+) terminal of the source voltage,
the voltmeter will read - ANSWER Backwards
How should a voltmeter be connected? - ANSWER In parallel with the load
Why are the iron cores of most induction coils laminated? - ANSWER To reduce the
effects of eddy currents
