There are two common forms of eddy current damping devices:ġ) A metal former which carries the working coil of the instrumentĢ) A thin aluminum disc attached to the moving system of the instrument, this disc moves in the field of a permanent magnet The disc should be of conducting and non-magnetic material This torque is proportional to the strength of the magnetic field and the current produced.This current interacts with the magnetic field to produce an electromagnet torque which opposes the motion.When a conductor moves in a magnetic field an emf is induced in it and if a closed path is provided, a current (known as eddy current) flows.In the moving coil instrument or PMMC type instruments, damping is provided by eddy current damping. To be effective the damping torque should be proportional to the velocity of the moving current but independent of the operating current.
The damping device should be such that it produces a damping torque only while the moving system is in motion. The following mechanism can be used for producing damping torque. So before coming to rest the pointer always oscillates due to inertia, so to bring the pointer rest within a short time by reducing oscillations, we use damping torque without affecting controlling torque (or) inertia.
The deflecting torque is used for deflection, the controlling torque acts opposite to the deflecting torque.
>Example: A potentiometric type of recorder used for monitoring temperature records the instantaneous temperatures on a strip chart recorder. >Any electrical quantity like current, voltage can be recorded by a suitable recording mechan>ism. In principle, these are indicating instruments but so arranged that a permanent continuous record of the indication is made on a chart or dial. Recording Instruments: These instruments record continuously the variation of any electrical quantity with respect to time. >Example: Ammeter, Voltmeter, Wattmeter, Speedometer These instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured. Indicating Instruments: These indicate the quantity being measured by means of a pointer that moves on a scale. These instruments give reading for a specific period of time but no indication of reading for a particular instant of time.Įxample: Ampere-hour meter, Energy meter, kilovolt ampere-hour meter. Question: Where in the U.S.>Integrating Instruments: These instruments record the consumption of the total quantity of electricity, energy, etc. Here are some basic examples of music trivia questions and answers to get you started. You could learn more about this instrument with a game based on its features, functions, and history. For example, you may have been playing the piano for some time. Music trivia games are also a great way to learn about the different instruments and styles used to make and play music. You could also encounter questions that let you identify the music creators, artists, and producers. If the film featured musical instruments, you’d be asked to compare and contrast this with the instruments that the main character uses in the movie. For example, you could be presented with a list of popular songs featuring the main character from a popular movie. Many music trivia games also require you to consider other forms of entertainment, such as film and television. You may be interested in selecting topics that test your knowledge of popular songs from various genres, the history and development of musical instruments, why there were used as instruments of war, and more.
Whether you’re a fan of music or just really good at this trivia topic, every player can experience an assortment of music trivia themes. This is a great way to make your knowledge about music or your favorite musicians even broader than before. There are countless types of music trivia games available today, and they can be fun to play or educational for those who have a fondness for music. What Make Music Trivia Games Fun & Exciting In a typical music trivia game, players are asked to answer a range of questions about a wide variety of musicians, songs, albums, singers, songwriters, award-winners, and more. This topic is a specified trivia theme that challenges the in-depth knowledge of players in various subtopics revolving around music. Music Trivia is a great way for music enthusiasts to challenge their knowledge of the music industry, and what better way to enjoy it than live and entertaining virtual events.
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