The EASA
ATPL Systems, Powerplant, and Electronics
test bank contains questions pertaining to
021-02-02 Alternating current (AC)
. The following list contains only a relatively small percentage of the pertinent
questions. Our software, which you are free to download now at no cost, will
generally contain a much more complete set of questions associated with this
test bank. This list is intended only to familiarize you in a general way with
the questions of the
Systems, Powerplant, and Electronics
test bank.
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Systems, Powerplant, and Electronics
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That said, while the following questions are intended
as a general familiarization tool, this list may not be up-to-date nor accurate.
We do not update this website as often as we update our software, which will
contain at any moment all questions that we have for a given test / topic. Therefore,
if you need to actually study for your test, instead of using the list below,
we strongly, strongly encourage you to download our GroundSchool
EASA ATPL
Written Test Prep Software and Apps. Not only is it more complete and up-to-date, but is also considerably faster and more efficient as a study tool.
| Sample Questions
from the EASA ATPL
Systems, Powerplant, and Electronics
Test Bank |
- The oil system of an IDG will be:
- (Refer to figure 021-15)Which of this circuit diagram symbols represents an auto-transformer?
- A short circuit on a single pole electrical circuit could be caused by:
- The output frequency of an AC generator depends on:
- On an earth return aircraft wiring circuit:
- The output voltage of a transformer is twice as high as the input voltage. The transformation ratio is:
- Reversing two phases of a three phase motor will:
- A carbon pile voltage regulator:
- When loaded, a synchronous motor:
- When AC generators are operated in parallel:
- In a solely inductive circuit, what is the relationship between current and voltage?
- It may be determined that an aircraft is not properly bonded if:
- In a capacitive AC supply system, if frequency reduces:
- In order to produce an alternating voltage of 400 Hz, the number of pole pairs required in an AC generator running at 6000 rpm is:
- In a generator, the Constant Speed Drive (CSD):may be disconnected from the engine shaftmay be disconnected from the generatoris a hydro-mechanical systemis an electronic systemmay not be disconnected in flightmay be disconnected in flight
- Static dischargers:are used to set all the parts of the airframe to the same electrical potentialare placed on wing and tail tips to facilitate electrical dischargeare used to reset the electrostatic potential of the aircraft to a value approximating 0 voltsare located on wing and tail tips to reduce interference with the on-board radio communication systems to a minimumlimit the risks of transfer of electrical charges between the aircraft and the electrified cloudsThe combination regrouping all the correct statements is:
- The efficiency of modern transformers is:
- In a carbon pile voltage regulator, when the pile is compressed its resistance... and the current through the field coil:
- The purpose of a CSDU is to:
- A magnetic circuit breaker:
- How is a low reactive load on one AC generator, of paralleled AC generators, compensated for?
- A BTB is:
- A transformer has 500 turns of wire on the primary winding and 50 turns of wire on the secondary winding. If 240 Volts AC is applied across the primary, the output voltage across the secondary coil will be:
- What is the shaft RPM of a synchronous AC motor connected to a 3 phase 200 Hz supply?
- What happens to the current in a series capacitive circuit when frequency increases?
- A transformer converts:
- In a perfect capacitor, as frequency increases, impedance:
- The most widely used AC frequency in aircraft is:
- The function of a CSD in an AC generating system is to:
- A rectifier converts:
- In a generator circuit, the circulating current is:
- (Refer to figure 021-15)Which of this circuit diagram symbols represents a relay?
- Real load sharing is achieved by:
- An example of a motor providing a weak rotating field by a single phase AC supply is:
- On detection of a persistent overvoltage/fault on an AC generator connected to the aircraft AC busbars, the on- board protection device opens:
- The most widely used electrical frequency in aircraft is:
- How are fuses rated?
- The output of an AC generator is rated in:
The
list above contains 1/4 or less of the actual number of questions
and may not be up to date! Download the software today to get
access to all available questions. |
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more information about the EASA ATPL
Systems, Powerplant, and Electronics
test bank, click here.
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