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How do you tell if an antenna needs a ground plane?

How do you tell if an antenna needs a ground plane? To function as a ground plane, the conducting surface must be at least a quarter of the wavelength (λ/4) of the radio waves in radius. In lower frequency antennas, such as the mast radiators used for broadcast antennas, the Earth itself (or a body of water such as a salt marsh or ocean) is used as a ground plane. What are the effects of ground on the radiation of monopole antenna? The general effect of electrically small ground planes, as well as imperfectly conducting earth grounds, is to tilt...
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How long does the Series 63 last?

How long does the Series 63 last? The Series 63 exam — the Uniform Securities State Law Examination — is a North American Securities Administrators Association (NASAA) exam administered by FINRA. The exam consists of 60 scored questions. Candidates have 75 minutes to complete the exam. How long before my FINRA licenses expire? How long will my qualification exam(s) be valid after I end my affiliation with a FINRA-registered firm? Your SIE exam is valid up to four years. All other exams will be valid for two years after your registration has been terminated. What is the difference between a...
Common questions

What do mine tailings contain?

What do mine tailings contain? After miners excavate rock, a processing plant crushes it to recover valuable minerals such as gold or copper. The leftover pulverized rock and liquid slurry become tailings, which often are acidic and contain high concentrations of arsenic, mercury and other toxic substances. What are the waste products from mining copper? By-products generated in the process are sulfur dioxide and slag. The sulfur dioxide is captured for use in earlier leaching processes. How is copper mining bad for the environment? A peer-reviewed study of the track record of water quality impacts from copper sulfide mines found...
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What is the stuff function in SQL Server?

What is the stuff function in SQL Server? The STUFF function inserts a string into another string. It deletes a specified length of characters in the first string at the start position and then inserts the second string into the first string at the start position. What is difference between stuff and replace in SQL Server? STUFF function is used to insert a string into another string by deleting some characters specified. The function below inserts the string “nny” at the 2nd position and replaces a total of 3 characters. On the other hand, REPLACE instead of replacing specific characters,...
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What is called cylinder?

What is called cylinder? A cylinder is defined as a surface consisting of all the points on all the lines which are parallel to a given line and which pass through a fixed plane curve in a plane not parallel to the given line. Such cylinders have, at times, been referred to as generalized cylinders . What do cylinders mean in an engine? A cylinder is a vital part of the engine. It's a chamber where fuel is combusted and power is generated. The cylinder consists of a piston and two valves at the top; an inlet and exhaust valves....
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Does the Quran prohibit alcohol?

Does the Quran prohibit alcohol? Alcohol and other intoxicants are forbidden in the Quran, as they are a bad habit that drives people away from the remembrance of God. Several different verses address the issue, revealed at different times over a period of years. What does Quran say about intoxication? The Qur'an says: You who believe, intoxicants and gambling, idolatrous practices, and [divining with] arrows are repugnant acts—Satan's doing—shun them so that you may prosper. With intoxicants and gambling, Satan seeks only to incite enmity and hatred among you, and to stop you remembering God and prayer. Is it haram...
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What is the maturity value of Jeevan Tarang?

What is the maturity value of Jeevan Tarang? Here are the key features of Jeevan Tarang: The minimum sum assured is Rs. 1,00,000. How is Jeevan Tarang policy calculated? The declared bonus gets added to the policy account every year as and when it is declared. For example, if the sum assured is Rs. 10,00,000 and the declared bonus is Rs. 49 the bonus amount added to that policy account for that particular year will be 10,00,000 * 49/1000 = 49,000. What is the benefit of Jeevan Tarang? Key Features of LIC Jeevan Tarang PlanPlan typeWhole life insurance plan.Maturity benefitsThe...
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What can I make out of Quaker Oats?

What can I make out of Quaker Oats? Favorite Recipes Using Quaker OatsNo Bake Peanut Butter Chocolate Oatmeal Cookie Balls. 1940s Lazy Daisy Cake. Salted Dark Chocolate Granola Bars. Old World Oatmeal Cookies. Pumpkin Oatmeal Chocolate Chip Cookies. Fresh Apple Crisp. Homemade Oatmeal Cream Pies. Oatmeal Bars. Is Quaker Oats good for weight loss? Oatmeal contains a healthy mixture of fiber, complex carbohydrates, and plant-based protein that makes it beneficial for weight loss. A half-cup of dry Old Fashioned Quaker Oats contains 150 calories, three grams of fat, 27 grams of carbohydrates, five grams of protein, and one gram of...
Common questions

Why do ps3 Thumbsticks get sticky?

Why do ps3 Thumbsticks get sticky? When the controller is in normal use, you're always pushing on top of the thumb sticks so all that grime stays inside, but given a chance to sit, all this excess material starts to ooze out of the rubber. Sounds gross, yes! How do you fix a sticky controller joystick? Remove the rubber joystick covers by popping them off like a Lego brick. Then, wiggle the metal joysticks underneath to loosen them. If you find that there is literally sticky stuff holding them in place (if your house is like mine, it's Mtn Dew),...
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Why do my parsnips taste bitter?

Why do my parsnips taste bitter? Parsnips are best harvested in late fall, after the first frost, at which time the starches are turned into sugars, making the vegetable taste “sweet”. However, if parsnips have been allowed to grow too big or remain too long in storage, they tend to get woodier and bitter. How do you get the bitterness out of parsnips? Or: Overcoming a Bitter Root with Complexity (and a bit of wine). The principle preparation of the root is the same, here. Sautee the parsnips in onions, garlic, and butter to bring out their earthy aromas, then...