Warning: Cannot modify header information - headers already sent by (output started at /home/content/70/7481070/html/appsrc/doyouknow.php:18) in /home/content/70/7481070/html/header.php on line 20

Warning: Cannot modify header information - headers already sent by (output started at /home/content/70/7481070/html/appsrc/doyouknow.php:18) in /home/content/70/7481070/html/header.php on line 21
cExams.net
Do You Know
Questions & Answers on General Knowledge.

Question:
A bird lands on an uninsulated 10,000 volt power line. Will it become extra crispy?
Answer:
No. Birds do this all the time. What protects the bird is the fact that it doesn't complete a circuit. It touches only one wire and nothing else. Although there is a substantial charge on the power line and some of that charge flows onto the bird when it lands, the charge movement is self-limiting. Once the bird has enough charge on it to have the same voltage as the power line, charge stops flowing. And even though the power line's voltage rises and falls 60 times a second (or 50 times a second in some parts of the world), the overall charge movement at 10,000 volts just isn't enough to bother the bird much. At 100,000 volts or more, the charge movement is uncomfortable enough to keep birds away, so you don't see them landing on the extremely high-voltage transmission lines that travel across vast stretches of countryside. The story wouldn't be the same if the bird made the mistake of spanning the gap from one wire to another. In that case, current could flow through the bird from one wire to the other and the bird would run the serious risk of becoming a flashbulb. Squirrels occasionally do this trick when they accidentally bridge a pair of wires. Some of the unexpected power flickers that occur in places where the power lines run overhead are caused by squirrels and occasionally birds vaporizing when they let current flow between power lines.
--- >>>
More Questions:
  • What is thermodynamics?
  • Why did native Americans population fall?
  • How does the Internet work?
  • How does a fan compare to a propeller? Why does a fan blow air while a propeller has "lift"?
  • Why does a man refer to his wife as his “better half”?
  • Which is the smallest flightless bird?
  • Is it possible to make a visible laser beam fade after 2 or 3 feet for safety reasons?
  • If nothing sticks to Teflon, then how does Teflon stick to a pan?
  • What is a protostar?
  • Why do butterflies and other insects fly from flower to flower?
  • Does air create a friction force on water? Would a gutter be much quicker at having water flow through it, rather than a pipe?
  • How is charge distributed to a tank circuit with the "correct" frequency?
  • Did human health improve in the twentieth century?
  • My friend says he’s a genius. Is that possible?
  • How efficient are solar energy cells and windmills in producing energy for everyday use?
  • Why did the Navajo paint sand?
  • How does a halogen bulb work and is it really better than a regular bulb?
  • What is the difference between an electric and a magnetic field?
  • Is it possible for a skydiver who jumps second from a plane to put himself in an aerodynamic position and overtake a person who jumped first?
  • What is the Internet?
  • What causes a bruise?
  • What is the shortest English sentence ever created using all the letters of the alphabet?
  • What is the relationship between turbulence, laminar flow, and Reynolds number?
  • Who were the first scientists to study air travel?
  • What is the purpose of the grid on the glass door of the microwave oven?
  • Queen Victoria
  • Healthy Blood
  • Benefits of Tomatoes
  • Creative Valentines Day Gift
  • Make your home like a hotel
  • Venomous Snakes

  • Best Eco Friendly Hotels and Resorts in the World

    Banasura Hill Resort Wayanad Kerala

    Asias largest andEarthand resort Banasura is predominantly constructed from mud known as rammed earth Its 31 rooms are nestled on a 35 acre ecoandfriendly farm surrounded by rich nature Guests can enjoy hiking through the countryside to visit waterfalls caves and a tribal village The resort also has a rejuventating Ayurvedic spa


    Chourishi Systems