Engineering, 03.05.2021 17:20 winwinphyo
Para un trasformador monofásico de 10KVA, de 440V/220V. I1=45.45 (A), presenta el nucleo de la figura. Conociendo que el numero de espiras del primario es de 250, que el nucleo posee un permitividad relativa de 5500, largo total de 10 CM y area de 4 cm2 . ¿Determine la reluctancia?
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On a average work day more than work place firs are reorted
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Engineering, 04.07.2019 18:10
Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.
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Engineering, 04.07.2019 18:10
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
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Engineering, 04.07.2019 18:10
Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer
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Para un trasformador monofásico de 10KVA, de 440V/220V. I1=45.45 (A), presenta el nucleo de la figur...
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