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you need a tachometer
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∙ 14y ago
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∙ 11y agowith a tachometer...
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How can you measure electric motor RPM without a strobe?
Two methods, one uses a dial that is held in the center of the revolving shaft and is directly read off of the dial face. The second method uses a strobe light. The light is focused on the shaft and the dial on the strobe is turned until it looks like the shaft has come to a stand still. The RPM is read off of the meter face of the strobe light.
What causes an electric motor to stick when trying to start?
The cam shaft opens the valves for the inlet of gas/air into the piston chamber & exhaust of used fuel has a smooth rpm operating range. The proper timing of the motor to run idle is usually 600-800 rpm. While the motor is trying to start and gain rpm, the pressure from the compression of fuel lags on all other piston until the smooth idle operating rpm is reached. Making the motor lag on start up.
Can a 2800 rpm motor replace a 1400 rpm motor for air compressor?
No
How do you calculate maximum current of 3 phase motor?
By using a simple formulae: f=np/60 where f= frequency, n is the number of pair of poles and 60 is in seconds that motor is turning. So a 4 pole motor with a frequency of 50 hertz will run at 1500 rpm. By manupilating the formulae: n= 50 multiplied by 60 devided by 2 therefore n= 1500rpm. The formula 120xFrequency/poles gives synchronous speed not actual shaft RPM. Induction motors must run at a certain % slip to obtain torque, so a 4 pole motor running at 50hz would be 120x50/4 = 1500 rpm, at 4% slip (operating speed) actual shaft RPM or rated speed would be 1440 RPM.
Do you know what equipment is required to control the speed of motor shaft rotation angle of motor shaft and reverse the direction of motor shaft?
Variable Frequency Drive
How can you measure electric motor RPM without a strobe?
Two methods, one uses a dial that is held in the center of the revolving shaft and is directly read off of the dial face. The second method uses a strobe light. The light is focused on the shaft and the dial on the strobe is turned until it looks like the shaft has come to a stand still. The RPM is read off of the meter face of the strobe light.
What is motor current at zero RPM in vacon nxp ac drive?
Zero rpm at the drive does not exclude the presence of a holding torque on the shaft of the motor due to load in some circumstances. The motor current will be a reflection of the torque presented at the shaft.
If you have motor rpm motor shaft sizeblower pulley size how you get blower rpm?
Drive Pulley = pulley on motor Driven Pulley = pulley on blower First determine your Ratio - divide large pulley size by small pulley size this will give you gear ratio, Example 2" drive pulley and a 4" Driven Pulley = 2:1 gear ratio If you know your motor shaft RPM divide that number by the ratio to get the RPM of the driven pulley, if your shaft rpm is 1800 rpm you would divide 1800 by 2 which would = 900 rpm on your driven pulley if your drive pulley is larger than than your driven pulley you multiply the rpm by the ratio example 1800 rpm x 2 = 3600 rpm
What exactly does RPM measure in an engine?
RPM means Revolutions Per Minute. This measures the amount of times the crank shaft goes around in one minute.
How do you measure RPMs on an electric motor?
There is an instrument that used a strobe light to check shaft rotation on a motor. It is somewhat like the timing light that is used on vehicle engines to check their timing. There is also a mechanical dial device that is physically touched to the pully or gear end and center of the turning rotor shaft and the RPM is read right off of the dial face.
What is the purpose of a laser tachometer?
Laser tachometer are instruments used to measure the rotation speed of a shaft or disk, as in motor or other machine. They usually display the revolutions per minute (RPM) on a calibrated analogue dial or digital display.
Efficiency of motor?
I measure the efficiency of an internal combustian engine by doing (bhp)/((displacement)*(rpm))
What is acceleration in a three phase motor?
It is a measure of how many rpm the motor gains in one second while running up after being switched on.
Why 2900 rpm motor is less price than 1450 rpm motor?
Materials for producing 2900 rpm motor is less than 1450 rpm one
What causes an electric motor to stick when trying to start?
The cam shaft opens the valves for the inlet of gas/air into the piston chamber & exhaust of used fuel has a smooth rpm operating range. The proper timing of the motor to run idle is usually 600-800 rpm. While the motor is trying to start and gain rpm, the pressure from the compression of fuel lags on all other piston until the smooth idle operating rpm is reached. Making the motor lag on start up.
What is the horsepower of a Triumph America?
According to Triumph, it is 54 bhp (brake horsepower) @ 6,750 rpm. According to Encyclopedia Britannica, horsepower at the output shaft of an engine, turbine, or motor is termed brake horsepower or shaft horsepower.
Can a 2800 rpm motor replace a 1400 rpm motor for air compressor?
No
