The EASA
ATPL Systems, Powerplant, and Electronics
test bank contains questions pertaining to
021-02-01 Direct current (DC)
. 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 |
- A 24V, 60 Ah battery is driving a 48 Watts light bulb. Approximately how long would the battery last assuming that it is new?
- Bonding is used to protect the aircraft against fire by:
- Recharging an aircraft's battery from an AC system would require:
- The purpose of a battery protection unit is generally to isolate the battery:from the bus when the battery charge is deemed satisfactorywhen there is a battery overheat conditionin case of an internal short circuitin case of a fault on the ground power unitThe combination which regroups all of the correct statements is :
- An aircraft has total services drawing 120 amps, essential services drawing 45 amps and vital services drawing 5 amps. The designer has 50 Ah capacity batteries (at system voltage) available and wishes to ensure that the aircraft can fly safely for at least 2 hours following a breakdown of electrical generators. What configuration of batteries would be employed?
- Electrical batteries when connected in parallel provide... amp/hr capacity and... voltage.
- When an electrical circuit is open circuited:
- What unit is used to measure potential difference between two points in an electrical circuit?
- In normal conditions, generator output voltage is arranged to be:
- Usually, in conductive materials:
- Apparent Power is measured in:
- Voltage is:
- The capacity of a typical lead acid battery for aviation use is
- The voltage regulator of a DC generator is connected in:
- An Electromotive Force (EMF) can be measured with:
- Current is expressed in... and the basic SI units for it are...
- The so called HOT BUSSES or DIRECT BUSSES are:
- Consider a battery voltage V, connected to three resistors R1, R2, R3. R2 and R3 are in parallel with one another, and the combination of them is in series with R1. If R1 is 2 Ohms and has 6 volts across it, R2 has 2 amps running through it and R3 is 6 Ohms, what is R2?
- Which of the following statements best describes two resistors connected in parallel?
- Voltage is proportional to charge on:
- An aircraft has 3 navigation lights, each rated at 24 watts, which are connected in parallel and supplied by a 12 volts battery. What would be the total current that the battery has to deliver to the navigation lights circuit?
- Two 0.03 Henry inductors are placed in series. The resulting inductance is:
- Consider a battery voltage V and two resistors (R1 and R2) which are connected in series: If R1 is 2 ohms, R2 has 3 amps through it and 3 volts across it what is V?
- The voltage of a fully charged lead-acid battery cell is:
- A 12 volt battery is connected to a 24 watt light bulb. The battery lasts for 10 hours. What is the battery capacity?
- When a conductor cuts the flux of a magnetic field:
- The capacitance of several capacitors connected in parallel can be calculated to be:
- In aeronautics, the most commonly used batteries are NiCad because...
- In a circuit containing reactive elements, the total current:
- If one of the 12 cells of a lead-acid battery is dead, the battery:
- On board present aircraft, the batteries used are-mainly Cadmium-Nickel. Their advantages are:low risk of thermal runawayhigh internal resistance, hence higher powergood charging and discharging capability at high ratingwider permissible temperature rangegood storage capabilitysturdiness owing to its metal casingthe electrolyte density remains unchanged during chargingThe combination of correct statements is:
- The detection of a feeder fault on a direct current circuit results in:automatic disconnection of the generator from the aircraft AC busbaropening of generator field current relayopening of the main relay of the generator breakeropening of balancing circuit connecting two generatorslighting of an indicator lampThe combination of correct statements is:
- The on-load voltage of a lead-acid battery is... and is measured using...
- Consider a battery voltage V, connected to three resistors R1, R2, R3. R2 and R3 are in parallel with one another, and the combination of them is in series with R1. If R1 is 3 Ohms, R2 is 10 Ohms and R3 is 5 Ohms, what is the total resistance of the circuit?
- One essential law of magnetism is:
- Switching a DC alternator off is achieved by:
- What is the purpose of an ammeter?
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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