Answer / vinod kumar

The service factor (SF) is a measure of continuous overload capacity at which a motor can operate without overload or damage, provided the other design parameters such as rated voltage, frequency and ambient temperature are within norms. Example: a 3/4 HP motor with a 1.15 SF can operate at

Answer / tapiwanashe vhurumuku

service factor is the measure of periodically overload capacity at which a motor can operate without damage

in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com

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How does numerical relay work?

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In the solution of load flow eqation, Newton raphson method is superior to the gauss siedal method because (a)the time taken to perform one iteration in the NR method is less when compared to GS method (b)the number of iterations required in the NR method is more compared to that in the GS method (c)the number of iterations required is dependant on the size of the system in the NR method (d)convergence characteristics of the NR mehod are not affected by the selection of the slack bus

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mention hazard experienced during installation

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Can the field winding in synchronous machines be placed on stator?What is the limitation of such arrangement?

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Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

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in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?

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how do you test tachos and servos

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how can we change the rotating direction of single phase AC induction motors?

12 Answers   Heubach Colour, L&T, MNM Jain Engineering College,

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2 v/500amp/hr to 1.80vpc at 20 degree celsious 2v/5ooamp/hr to 1.75 vpc at 77degree farren .this is the capacity of a battery .what is the meaning of this . can i get a detailed explenation

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