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Question 48-1 : Electric motors propulsion the abbreviation corresponding to an engine that is not turning in a clockwise direction is ? [ Result takeoff ]
Ccw
Question 48-2 : Electric motors propulsion the abbreviation corresponding to an engine that is turning in a clockwise direction is ?
Question 48-3 : Electric motors propulsion the abbreviations cw and ccw for an electrical engine mean respectively ?
Clockwise and counter clockwise directions.
Ccw = counter clockwise cw = clockwiseCounter-clockwise and clockwise directions. direct current and alternating current. alternating current and direct current.
Question 48-4 : Considering a brushless electric motor of 440 kv powered with a voltage of 24 volts indicate the maximum speed of rotation of the motor ?
10560 rpm.
Kv x volts = speed of rotation per minutenote how the answers are about times ten from each other the calculation has virtually nothing to do with itjust to see if you understand the props are spinning really fast 10000 vs 1000 rpm and the props could hurt you or someone else24 rpm. 440 rpm. 1,560 rpm.
Question 48-5 : Batteries connecting two 6 v 5 ah capacity batteries in series will result in a total voltage and capacity respectively of ?
12 v 5 ah.
Battery packs achieve the desired operating voltage by connecting several cells in series with each cell adding to the total terminal voltage 12 volt 5 amp hoursparallel connection attains higher capacity for increased current handling as each cell adds to the total current handling 6 volt 10 amp hoursin parallel we increase the flow in series we increase tension24 v / 10 ah 12v / 24 ah 6 v / 5 ah
Question 48-6 : Batteries the connection in parallel of two 6 volt 5 amphours batteries will create a unit with the following characteristics ?
6 v 10 ah.
Battery packs achieve the desired operating voltage by connecting several cells in series with each cell adding to the total terminal voltage 12 volt 5 amp hoursparallel connection attains higher capacity for increased current handling as each cell adds to the total current handling 6 volt 10 amp hoursin parallel we increase the flow in series we increase tension6 v / 5 ah. 12 v / 5 ah. 12 v / 10 ah.
Question 48-7 : Batteries 4s is written of a lipo battery it indicates ?
The number of cells in series.
A 4s battery pack means that there are 4 cells in series1 cell = 37 v4s = 4 cells in series 4 x 37 v = 148 voltsIts power in watt. the c rating in ampere. its voltage in charge.
Question 48-8 : Batteries the capacity of a battery of ?
5 ah is 5 amp during 1 hour.
The capacity of a battery is the amount of amperehours the flow that a fully charged battery can supplyif a battery is rated at 5 ah it can provide during 1 h 5 amp or during 5 h 1 amp20 ah is 20 amp during 20 hours. 20 ah is 20 amp during 10 hours. 10 ah is 20 amp during 10 hours.
Question 48-9 : Batteries the capacity of a battery is the ?
Amount of ampere hours that a fully charged battery can supply.
Number of cycles (charging and discharging) that a battery can withstand without deterioration of its cells. no-load voltage of the battery multiplied by its rated output current. intensity withstood by the battery during charging.
Question 48-10 : Batteries the capacity of a battery is given in ?
Ampere hours.
Amperes/volts. watts. ohms.
Question 48-11 : Batteries voltage of a battery is expressed in ?
Volt.
Voltage voltpower wattcapacity ampereresistance ohmAmpere. watt. ohm.
Question 48-12 : Batteries associated value to the c letter of a lipo battery indicates ?
The maximum continuous discharge rate of the battery.
A lipo battery is a lithium polymer battery keep in mind that the voltage of a lipo battery is typically 3 to 42 v per cell use 37 v for the exam a lipo battery self discharges very slowly over time only 1% per month the letter c stands for capacity the value listed indicates the maximum safe continuous discharge rate of your battery if your battery is rated at 20c this means you can continuously discharge the battery at a rate up to 20 times its capacitycapacity is usually measured in mah and the most common batteries are 2200 mah =22a example 2200mah 20c cell = 22a x 20 = 44a maximum continuous dischargeThe maximum load in volt. the minimum load in volt. intensity of one cell.
Question 48-13 : Batteries the term lipo means ?
Lithium polymer.
A lipo battery is a lithium polymer battery keep in mind that the voltage of a lipo battery is typically 3 to 42 v per cell use 37 v for the exam a lipo battery self discharges very slowly over time only 1% per month Lithium polycarbonate. limited power. lithium polyphenol.
Question 48-14 : Batteries when carrying out a battery condition check using the aircraft's voltmeter ?
A load should be applied to the battery in order to give a better indication of condition.
No load should be applied to the battery because it would reduce the voltage. the battery should be isolated. the load condition is unimportant.
Question 48-15 : Batteries when a battery is almost fully discharged there is a tendency for the ?
Voltage to decrease under load.
Voltage to increase due to the current available. current produced to increase due to the reduced voltage. electrolyte to 'boil'.
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