Calculate the mechanical speed of rotar, Electrical Engineering

Calculate the mechanical speed of rotar:

An asynchronous machine of 460V, 25hp, 4 poles with rotor wound in Y has the following data (of the side stator):

Resistance of the rolling-ups of the stator: R1=0.55 ?

Reactance of the rolling-ups of the stator X1=1.1 ?

Resistance of the rolling-ups of the rotor R2=0.3 ?

Reactance of the rolling-ups of the rotor X2=0.46?

Reactance of magnetizing xΦ = 30Ω

Frequency of operation 60Hz

1-What is the mechanical speed (in tours per minute) of the rotor for the maximal led couple?

2-What is the couple led by starting up?

3-Recalculate the mechanical speed (in tours per minute) of the rotor for the maximal led couple having doubled the resistance of the rotor.

4-Recalculate the couple led by starting up having doubled the resistance of the rotor.

Posted Date: 2/13/2013 1:37:44 AM | Location : United States







Related Discussions:- Calculate the mechanical speed of rotar, Assignment Help, Ask Question on Calculate the mechanical speed of rotar, Get Answer, Expert's Help, Calculate the mechanical speed of rotar Discussions

Write discussion on Calculate the mechanical speed of rotar
Your posts are moderated
Related Questions
TDMA: Time division multiple access (TDMA) is a channel access method for shared medium (generally radio) networks. It permits several users to share the similar frequency chan

Q. A 15-kVA, 2200:220-V, two-winding, single- phase transformer is connected as an autotrans- former to step up voltage from 220 V to 2420 V. Without exceeding the rated current of

We can illustrate the direction and strength of a magnetic field by means of drawing 'flux lines'. These have arrows to show the direction of the magnetic field at any point and th

Q. Show procedure of divide the decimal number by 2? For this procedure (method), divide the decimal number by 2, if the remainder is 0, on the side write down a 0. If the rema

what do we mean when we say that an equation is dimensionally correct?

Q. Explain the function of time base generator in CRO. Sol. Oscilloscopes are used to display a waveform that varies as a function of time. If the waveform is to be accuratel

Discuss features and usage of Peripheral Component Interconnect bus. Peripheral Component Interconnect bus has plug as well as play characteristics and the capability to func

Q. A sample of iron having a volume of 20 cm is subjected to a magnetizing force varying sinusoidally at a frequency of 400 Hz. The area of the hysteresis loop is found to be 80 cm

i cant imagine of something called complex frequency...i find it important for laplace transformation,but i am lacking the physical explanation,please explain this to me

Q. For a parallel-plate capacitor with plates of area A m 2 and separation d m in air, the capacitance in farads may be computed from the approximate relation Compute the