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Variometer: Quiz

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Question 1: The rate and direction of flowing air is measured by the cooling of one of two self-heating ________ and the difference between the thermistor resistances will cause a voltage difference; this is amplified and displayed to the pilot.
Electrical resistanceThermistorResistance thermometerElectric current

Question 2: In powered ________ the pilot makes frequent use of the VSI to ascertain that level flight is being maintained, especially during turning manoeuvres.
Fixed-wing aircraftRocketFlying and gliding animalsFlight

Question 3: Typically it takes the form of a radio ________ in the plane, and a receiver held by the pilot on the ground.
TransmitterBroadcast engineeringRadio masts and towersAmateur radio

Question 4: The term Variometer also refers to a type of variable ________ inductor
Electric currentElectromagnetismElectric chargeElectricity

Question 5: Before the invention of the variometer, ________ pilots found it very hard to soar.
Fixed-wing aircraftGlider (sailplane)Hang glidingPowered hang glider

Question 6: In ________, the instrument is used almost continuously during normal flight, often with an audible output, to inform the pilot of rising or sinking air.
Powered hang gliderGlidingHang glidingLift (soaring)

Question 7: Other forms of ________ may also be provided by the system, giving things such as airspeed and battery voltage.
TelemetrySpaceflightSpacecraftSatellite

Question 8: A variometer (also known as a rate-of-climb indicator, a vertical speed indicator (VSI),[1] or a vertical velocity indicator (VVI)) is an instrument in an ________ used to inform the pilot of the instantaneous (rather than averaged) rate of descent or climb.
AircraftWide-body aircraftDouble-deck aircraftBusiness jet

Question 9: The instrument is of little interest during launching and landing, with the exception of ________, where the pilot will usually want to avoid releasing in sink.
Powered hang gliderLift (soaring)Hang glidingGliding







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