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1.73 is the square root of the whole number 3, (rounded off to two decimals), and is used in virtually all 3 phase calculations.
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Should a 3 phase motor run on star or delta?
It does not matter to the motor, just as long as the three phase voltage is what the motor specification requires. HOWEVER..... While the motor will run in either star or delta, it will draw 3 times as much current in delta as it does in star, and will develop 3 times more torque (and power) in delta compared to star. 3 phase motors are often started in star, as it draws less current and is less likely to blow fuses, damage contacts and upset the supply system due to voltage drops. When the motor is near full speed, the motor is switched to delta connection for full power. This is called star-delta starting, and is suitable for light, low inertia loads such as fans or pumps. Because of the motor's reduced startup torque, it shouldn't be used for compressors, machines with heavy flywheels, or machines that come onto load before they reach full speed. Motors designed for star-delta starting will have 6 live terminals in their connection box. Let's get a little bit technical. In star, each winding has L-N voltage across it (about 58% of the L-L voltage applied when in delta) - in Australia, our voltage from the active (live wire) to the neutral (return wire) is 230 volts, and the voltage from one active to another active is 400 volts. (230 / 400 is about 0.58, or 58%. and 400 / 230 is 1.73 or 173%). Connecting a motor in star puts 230 volts across each winding, and connects ONE winding to each supply phase. when running, it draws (say) 10 amps, and develops about 6 kW / 8HP. In delta, each winding has 400 volts across it, and each supply line powers 2 windings, so the current increases by 1.73 (400 volts compared to 230 volts) and again by 1.73 (2 windings on a 3 phase system draw 1.73 times more current than one winding.) 1.73 squared is 3 - so in delta, the motor draws 3 times more current (30 amps), and delivers 3 times more power (18kW / 24HP). Some motors are designed to be operated ONLY in star - they may have a label advising you of this, or they may have only one value of voltage and current on the nameplate. They will also usually have only 3 terminals inside the connection box. If you suspect that the motor is 'star only', but want to make sure, connect the motor in delta, and check the running current as soon as the motor is up to speed; if it is drawing more than the nameplate current, or the motor is noisy in delta, but not in star, stop the motor immediately and reconnect it in star, or the motor WILL burn out very quickly.
What are the list of the most famous language?
1. Mandarin Chinese - 882 million 2. Spanish - 325 million 3. English - 312-380 million 4. Arabic - 206-422 million 5. Hindi - 181 million 6. Portuguese - 178 million 7. Bengali - 173 million 8. Russian - 146 million 9. Japanese - 128 million 10. German - 96 million
What are the prime numbers from 1 to 200?
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97 101 103 107 109 113 127 131 137 139 149 151 157 163 167 173 179 181 191 193 197 199
How do you write a looping program to check whether input is a buzz number or not?
Buzz numbers are aircraft identification numbers that were applied to American aircraft following the second world war and through the 1960's. To determine if an input is a buzz number or not, the input must consist of a two- or three-letter manufacturing code and a 3-digit number, separated by a hyphen. The digits are generally the last three digits of the aircraft serial number. Validating the manufacturing code is relatively simple given there were only 173 issued. However, validating the three-digit code would be impossible without a complete list of all aircraft that were assigned a buzz number. If such a list exists, storing them in sequential order would allow your program to perform a fast binary search to determine if the input were valid or not. In the absence of such a list, the manufacturing code alone would at least tell you which type of aircraft the buzz number (if valid) would have applied to.
How do you convert decimal number 147 to binary?
First convert 37 in to decimal.(3*8^1)+(7*8^0)=31.Then convert it to binary.2|31|2|15---12 |7-----12|3------12|1-----1so answer is in binary =(11111)Or, by digits: 3->011, 7->111; 37->011111
A 100 amp 3 phase power supply is good for how many total amps?
100 amps to a 3 phase load. Power = 100A x Voltage x 1.73 ((line to line voltage)(1.73=SQRT(3)). 173 amps to each of 3 single phase (line to line) loads. Power = 173A x Voltage (line to line voltage). or... 100 amps to each of 3 single phase (line to neutral) load. Power = 300A x Voltage (line to neutral voltage). Example: - 3 phase, 480v, 100amp to a 3 phase heater. 100A x 480V x 1.73 = 83040 watts. - 3 single phase 480v (L-L voltage) heaters, 100amp. 173A x 480V = 83040 watts. - 3 single phase 277v (L-N voltage) heaters, 100amp. 300A x 277V = 83100 watts.
What is 173 centimeters in inches?
173mm is 6.81102 inches. Direct Conversion Formula 173 mm* 1 in 25.4 mm = 6.811023622 in
What is 173cm coverted into inches?
By unit of length and distance and conversion ,we can say that 1 cm =0.3930 in 173 cm=68.11 in
What is the square feet of 173'?
None, since there can be no conversion. 173' is a measure of length in 1-dimensional space while a square foot is a measure of area in 2-dimensional space. The two measure different things and, according to basic principles of dimensional analysis, any attempt at conversion from one to the other is fundamentally flawed.
What is 100 K in Celsius?
The conversion from Kelvin to Celsius is to subtract 273 degrees. Thus, 100 degrees Kelvin is -173 degrees Celsius.
What is 14 percent of 173?
14% of 173 = 14% * 173 = 0.14 * 173 = 24.22
What two integers has a quotient of -173?
Select any non-zero integer D and let N = -173*D.Then the quotient N/D = -173*D/D = -173.
What are factors for 173?
1 and 173
What are the factors of 173?
173 is a prime number. Its only positive integer factors are itself and 1.173 is a prime so the only integer answer to the question is 1 * 173 = 173
Is 173 a composite number?
No - the only positive integer factors of 173 are 1 and 173.
What is the factors for the number 173?
1 and 173.
What is 2010 subtracted by 1837?
173
