Question 49-1 : Batteries calculate the capacity of a 15 volt battery with a power of 75 watthour ? [ Quiz specific ]

Question 49-2 : Batteries how many volts is a lipp6s battery ?

222 v.

1 cell = 37 v 6s = 6 cells in series 6 x 37 v = 222 voltswhen you connect battery cells in series you increase their voltagewhen you connect battery cells in parallel you increase their capacity

Question 49-3 : Batteries effect of negative or low temperatures on a lithium ion battery is ?

A reduced endurance.

Cold weather affects two key factors the electrochemical reactions that convert the chemical energy stored in the materials into electrical energy and the battery's internal resistance this results in reduced runtimereturning to a normal operating temperature should in principle restore the same runtime if the battery is well designedif you plan to fly in cold conditions keep your batteries in your pockets and install them only when performing your pre flight checks

Question 49-4 : Batteries the voltage of a lipo3s battery is ?

Question 49-5 : Batteries the nominal voltage of a lipo 4s3p battery is ?

Question 49-6 : Batteries lithium ion batteries should be handled with care because ?

Question 49-7 : Batteries a 4s lipo 2p battery rated at 8000 mah has a power of ?

1184 wh.

4s lipo 1p= 1 pack of 4 cells of 8000 mah in series4s lipo 2p= 2 packs of 4 cells of 4000 mah in series both pack are in parallel to reach 8000 mah 2x4000 4s = 4 x 37 volt = 148 voltspower watts = volts x ampere = 148 x 8 ah = 1184 whjust for information power is the rate of delivery of energy energy is the work performed

Question 49-8 : A battery presents the following characteristics 4s lipo of 5000 mah 35 c 35c means a discharge rates of ?

175a.

1 cell = 37 volts 5000 mah = 5 adischarge rate c = 5a x 35 = 175 a

Question 49-9 : Your drone uses lipo 6s batteries you may use 1 two 3s batteries in parallel2 two 3s batteries in series3 two 6s batteries in series4 two 6s batteries in parallelthe combination regrouping all the correct statements is ?

2 4.

6s battery = 6 cells en series6 x 37 v = 222 voltswhen you connect battery cells in series you increase their voltagewhen you connect battery cells in parallel you increase their capacitytwo 3s in series 3 x 37 volts + 3 x 37 volts = 222 volts = oktwo 6s in parallel capacity is increased but not voltage it remains at 222 volts = ok

Question 49-10 : You have a lipo 3s1p battery rated at 5200 mah the energy power of this battery is ?

577 wh.

1 cell = 37 v3s = 3 cells in series 3 x 37 v = 111 volts1p = only one line of a cells packpower watts = volts x ampere = 111 x 52 ah = 577 whjust for information power is the rate of delivery of energy energy is the work performed

Question 49-11 : Identify the three possible modes of the return to home rth function ?

Return to starting point hover immediate landing.

Agl above ground level

Question 49-12 : The primary function of an autopilot is to ?

Control the rpa.

The autopilot will help you to fly in marginal weather conditions rain wind it will help stabilize the drone in particular and also permits to save energy and time for the operator but its primary function is to control the rpa

Question 49-13 : From the choices below indicate the redundancy that is not typically found in a remotely piloted aircraft system ?

Two remote controls.

We will consider this answer as the most accurate we can consider that in case of failure of a compass inertial unit or gps a drone that would be operated in advanced operation in automatic or autonomous mode must be able to continue its mission with a failed element the redundancy of these elements would ensure flight continuity without pilot intervention

Question 49-14 : From the choices below indicate the item that is not needed for the proper operation of a ground control station ?

A second remote control.

We do not need to have a second remote to fly our drone it is certain that having one in spare is a bonus but it is not legally necessary

Question 49-15 : On a multi rotor rpa the inertial measurement unit imu is particularly vulnerable to ?

Vibrations.

The key to answering this question is multirotor a drone with several rotors will undergo many vibrations due to the differences in rotational speed between the different motorsthe imu detects movements it is an inertial control unit it records accelerations in all 3 planes it will easily record the movements of the drone in sharp turns or under load factor g it is not affected by electromagnetic interference or heat that could be released by an electric or even thermal motor