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I wouldn't think so. but after a short period of time it may hurt
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∙ 15y ago
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Will a 20mw laser burn?
Well a 20mw laser is to powerful it has a range of 3km but except few things it can burn nothing the things it can burn are matche sticks and stove it got a life time of 3000 hrs,to burn a stuff,paper or to pop a ballon u need a laser of or more than 50mw but u can make ur 20mw laser more powerfull the thing u need to do is go to youtube and seach how to make a 20mw laser a burning laser and it can burn the thing which a 50 mw laser can burn
Power gain of an amplifier having input gain of 20W and what is the output gain of 20mW?
The power gain of an amplifier having an input of 20W and an output of 20mW is 0.001. Expressed in decibels, that is a gain of -30db. (log2 0.001 * 3)If you meant an output power of 20MW (mega instead of milli), the gain is 1,000,000, or +60db.
What is power gain of an amplifier having input gain 20watt and output of 20mwatt is?
The power gain of an amplifier having an input of 20W and an output of 20mW is 0.001. Expressed in decibels, that is a gain of -30db. (log2 0.001 * 3)If you meant an output power of 20MW (mega instead of milli), the gain is 1,000,000, or +60db.
A rectangle has a perimeter of 50m and a length of 15.what is it width?
If its length is 15m then its width is 10m
What is the effect of increasing speed droop on governor of hydro electric generator?
I would suggest what you mean is to increase speed droop sensitivity. That mean you reduce speed droop percentage set point. I will answer primary impact only assuming your plant is grid connected. Assuming your current speed droop percentage set point is 10% and you have a 100MW hydro turbine generator serving a 50-Hz grid system. Therefore your droop response due to system frequency deviation is 100MW for every 5Hz (10% of your system nominal frequency of 50 Hz), or +/- 20MW/Hz or 2MW/0.1Hz. What this number does? It will be used by your governor to compensate the load of your hydro turbine as system frequency deviates from the reference frequency. As system frequency increases by 0.1Hz, the governor will subtract generator output by 2MW from the current load set point. If system frequency decreases by 0.1Hz then the governor will add 2MW to the current load set point. This is done automatically. Now you want to increase its sensitivity of your governor from this set point to 5%. You are actually doubling the response. That means the new load response will be +4MW/0.1Hz if unit system frequency reduces from the reference frequency and -4MW/0.1Hz if system frequency increases above the reference frequency. If you increase the sensitivity further to 2.5, then the new response will be +/-8MW/0.1Hz.
What materials were used for Wembley Stadium?
The main structure of the stadium is built from many different components and materials, I can tell you that the main contractor assigned for building of the stadium was Multiplex (UK) The design of the new stadium is both functional and architecturally significant. Sir Norman Foster designed the arch and the roof structure. The stadium's unique features include retractable roof panels and the arch. These were developed in response to the particular requirements of the stadium, one of which was the need for a high-quality grass pitch in order to achieve UEFA 5 star stadium status. The arch itself is not just a cosmetic feature; it supports the north roof and a sizable area of the south roof. The arch has a lattice form consisting of 41 steel rings (diaphragms) connected by spiralling tubular chords and is formed of 13 modules with two tapering end sections. The arch (7.4m in diameter at the base and weighing 1,750t) tapers at its ends and is supported on 70t hinges which are in turn supported on concrete bases founded on piles 35m deep. Inclined from the vertical, the arch is held in position by a series of forestay and backstay cables tied to the main stadium structure. The 50,000m2 roof is essential to the operation of the stadium as a sporting and concert venue. Weighing some 7,000t, the roof has a number of retractable edge sections which can be maneuvered to allow direct sunlight to reach all parts of the grass pitch to allow the pitch to achieve top quality. Construction of the arch began in 2003; it was fabricated on-site using steel modules fabricated by steel subcontractor Cleveland Bridge. Construction Materials: Steel reinforcement: 15,000 tonnes Concrete: 212,000 tonnes Structural Steel: 23,000 tonnes Blockwork: 125,000 mm2 External Wall cladding: 18,000 mm2 Fibre Optic cable: 14 km Cables and tendons: 6228 mtrs Moving area of the roof: 13,722m2 Cables and tendons: 6228 mtrs Area of roof: Metal Roof = 40,000 m2, Single Ply Roof = 12,000 m2 Doors (leafs): 3,488 Paint used in litres: 140,000 (Finishes) 90,000 (Steel) Gas supply: 32MW Electricity supply: 20MW Pitch flood lights - 2 Kw: 380 Sprinkler heads: 21,000 Ductwork: 10 Km Steel tube: 28 Km Chrome tube: 3.5 Km Cast iron tube: 24.5 Km Galvanised tube: 3.9 Km Mains cable: 444 Km Cable tray: 71 Km Small power and lighting cable: 1720 Km Speaker cables: 80 Km Security cable: 87 Km CCTV Cable: 38 Km IT Voice/Data: 108 Km
What is the differences among TTL and CMOS logic families?
{| ! CMOS ! TTL | CMOS has good packing density. TTL takes up more space CMOS has better noise immmunity. TTL has a smaller noise immunity range CMOS has a large fan out. TTL can power less inputs CMOS consume less power. TTL use more power CMOS are highly static sensitive. TTL IC's tend to be less susceptible to static electricity CMOS uses FETS (Field-Effect Transistors) TTL uses BJTs (Bipolar junction Transistors CMOS can run with a range of supply voltages. TTL IC's run with a 5V supply. CMOS uses Vdd and Vss for it's power connections TTL uses BJTs (Bipolar junction Transistors CMOS takes a lot less power and is therefore suitable for battery applications, but generally speaking can't run as fast. TTL devices can drive more power into a load. CMOS chips can be damaged by static electricity: even a static jolt that you or I can't feel might destroy a CMOS chip! |}
