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Electric fence: Quiz

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Question 1: Most electric fencing is used today for ________ and other forms of animal control purposes, though it is frequently used to enhance security of sensitive areas, and there exist places where lethal voltages are used.
Agricultural fencingCattleHorse careAgriculture

Question 2: The concept of the electric fence was first described in ________'s A Connecticut Yankee in King Arthur's Court, in 1889, as a defensive weapon.
Mark TwainThe Mysterious StrangerLetters from the EarthLife on the Mississippi

Question 3: For shorter periods ________ batteries may be used.
Nickel-cadmium batteryRechargeable batteryBattery (electricity)Galvanic cell

Question 4: A capacitor is charged by a solid-state circuit – upon contact with a grounded animal or person, the charge is then released using a ________ or similar solid-state component.
Semiconductor deviceThyristorBipolar junction transistorHigh-voltage direct current

Question 5: Less often, woven wire or ________ fences can be electrified, though such practices create a more hazardous fence, particularly if a person or animal becomes caught by the fencing material.
Barbed tapeBarbed wireTrench warfareFortification

Question 6: Electric fences were used to control livestock in the United States in the early 1930s, and electric fencing technology developed in both the United States and ________.
AustraliaNauruNew ZealandUnited Kingdom

Question 7: In a similar system, the collar uses ________ signals to determine proximity to a predetermined "virtual fence" without a physical installation.
Global Positioning SystemCompassF-15 EagleInertial navigation system

Question 8: Conventional ________ of any type may be strengthened by the addition of a single electric line mounted on insulators attached to the top or front of the fence.
Horse careCattleAgricultureAgricultural fencing

Question 9: ________ insulators replacing porcelain insulators, beginning in the 1960s.
NylonPolyethyleneUltra high molecular weight polyethylenePolyester

Question 10: Sections of the inner German border were lined with a 3 m (10 ft) high electric fence to stop potential defectors from ________.
Communist stateCommunist RomaniaSoviet UnionEast Germany







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