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A 415 V, 5 kW, 50 Hz, 4-pole, 3-phase wound-rotor induction motor has the following characteristics:
The magnetising current, core losses and rotating losses can be neglected for this question.
The motor is started direct on-line from a 415 V 50 Hz three phase supply.
(a) Calculate the starting current.
(b) Calculate the starting torque.
(c) Discuss how the starting current could be limited for this wound-rotor motor.
(d) If the motor is running at a speed of 1450 rpm, calculate the mechanical output power.
Calculate change of entropy of universe: 5Kg of ice at 10 0 C is kept in atmosphere that is at 30 0 C. Calculate change of entropy of universe when it melts and comes i
Stainless Steels Such are particularly termed for their resistance to corrosion. This resistance is acquired due to formation of protective oxide layer that spreads all over
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At a point in a beam, the bending stress is 50 MPa shear stress and tensile is 20 MPa. Calculate :- (i) The principal stress and maximum shear stress. (ii) The tensile stress
Schedule Evaluation The schedules are evaluated as per to the criterion weighted loss of slack. Now let t 0 si be the slack (time buffer) of job I as per to the initial sched
what is offset inertia force
which book is prefferable for plant maintenance?
Q. What do you know about Direct welds? It is a welding method in which one or more electrodes oppose each other, contacting both sides of the work and with the current passing
The total process of a the refining business begins at the oil field or gas field and runs all the way to the sending of processed hydrocarbon to a final user. Upstream applies
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