Answer Posted / naveen singh
Before commissioning of alternator following electrical tests should be done on site-
(1) IR and PI of generator
(2) Winding resistance of generator
(3) IR and winding resistance for PMG and excitor field winding.
| Is This Answer Correct ? | 19 Yes | 1 No |
Post New Answer View All Answers
a)In a 3-phase 4-wire circuit, a circuit breaker is selected to protect the circuit whose highest fault level is 6.6 MVA. Determine the required minimum breaking capacity in kA. (Note: Covert 3-phase power in terms of kA to find answer.) b)Using the below, determine the required minimum making capacity in kA as a “peak value”. Rate breaking capacity (Icn) ka: Icn<= 1.5 Factor = 1.41 1.5
do any one help me to get "C" license,, i have doubts ,,, if mediators ter pls call me,, my no is 8056640042
What is Meter MF if External CT Ratio is 150/1 , PT Ratio is 132/110 Meter CT Ratio is 200/1 & Meter PT Ratio is 110/1
why does rotor rotets?
In AC if the direction of current keeps reversing every half cycle, how does it propogate through the transmission lines?
What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.
working principle of AC Servo Motor with its construction
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
which protection function should measure RMS value of current&DFT value of current?
How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.
What is the temperature PROFILE OF A FLUID W. R. T. Distance from a sphere to which it is IN CONTACT which is at constant temp.?
Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??
How much minimum insulation required between 11kv/3.3kv transformer windings?
How to work meggar?
what will happen if the prime mover on the field excitation of the on-coming generator fails?Explain.
