0

resume format for electrical engineers in india

handbook for electrical engineers hu (2)

handbook for electrical engineers hu (2)

Điện - Điện tử

... type.3.1.12 Electrical Recording InstrumentsRecording instruments are, in many instances, essentially high-torque indicating instrumentsarranged so that a permanent, continuous record of the indication ... provided in each case.3.1.8 Instrument TransformersThe material that follows is a brief summary of information on instrument transformers as measure-ment elements. For more extensive information, ... where N is the number of turns in the magnetizing winding, I is the current in amperes, and l is the mean path length of the ring in centimeters. In using Epstein samples, it is nec-essary to...
  • 66
  • 378
  • 0
handbook for electrical engineers hu (3)

handbook for electrical engineers hu (3)

Điện - Điện tử

... directly, giving(4-52)4. ∗Incremental intrinsic permeability m∆i. The ratio of the change in intrinsic induction to thecorresponding change in magnetizing force when the mean induction differs ... metal for construc-tion purposes. Strengthening for castings is obtained by alloying elements. The alloys most suit-able for cold rolling seldom contain less than 90% to 95% aluminum. By alloying, ... slope of the nor-mal induction curve at the origin of linear B and H axes.7. ∗Intrinsic permeability mi. The ratio of intrinsic induction to the corresponding magnetizingforce.8. ∗Maximum...
  • 110
  • 473
  • 0
handbook for electrical engineers hu (4)

handbook for electrical engineers hu (4)

Điện - Điện tử

... together2. The “inverted lightbulb” of the BWR, which is a concrete cavity in the shape described with apressure-retaining steel liner3. The domed cylinder for the PWR; the cylinder of reinforced concrete ... occurred through increasing the temperature of saturated steam supplied to the turbine,by increasing the turbine inlet temperature through constant-pressure superheat, by reducing the sinktemperature, ... Extraction or “bleeding”of steam at state c for use in the “open” heater avoids excessive cooling of the vapor during turbineexpansion; in the heater, liquid from the condenser increases in temperature...
  • 114
  • 360
  • 0
handbook for electrical engineers hu (5)

handbook for electrical engineers hu (5)

Điện - Điện tử

... thrust bearing for normalloading and an “inactive” thrust bearing for reverse loading.The control-valve gear-activating equipment in a turbine usually is mounted on top of the turbinecasing at ... gas turbines has been for aircraft propulsion, where the turbine dri-ves only the compressor and the remaining energy is used for thrust. The industrial gas-turbineindustry started in the late ... used to cool the turbine parts. The highest-pressure turbine airfoils contain inter-nal cooling passages in order to maintain the metal temperature at acceptable levels for durability,while...
  • 28
  • 439
  • 0
handbook for electrical engineers hu (6)

handbook for electrical engineers hu (6)

Điện - Điện tử

... consisting of a cylinder of magnetic steel. In modern generators, the cylinder is formed from a single forging of vacuum degassed steel. Thefield winding is contained in radial slots in the ... can be coordinated with cooling of thestator core.7.10.5 Direct and Indirect CoolingDirect cooling, the norm for rotor windings andwidely used in stator windings, exposes the coolingmedium ... steel. In turbine generators, the rotor is typically made of a single-piece forging of steel with slots for the field winding cut by machining. The losses caused by harmonic driven eddy currents in...
  • 42
  • 431
  • 0
handbook for electrical engineers hu (7)

handbook for electrical engineers hu (7)

Điện - Điện tử

... armature-core length, in K1ϭ 18.5 for noncommutating-pole machinesϭ 0 for machines with commutating-pole length ϭ LrK2ϭ 1.0 for machines using nonmagnetic bandsϭ 1.7 for machines using magnetic ... width required for insulation, varnish,and stacking factor is about 0.140 in. With the wedge space included, the insulation-depth require-ment is about 0.400 in. Compensating Winding Calculationsq ... 8-13reverses in both the armature and the commutating field, andproper canceling is maintained.Note that the strength of the commutating-pole winding mustbe greater than the armature-winding ampere-turns...
  • 42
  • 503
  • 0
handbook for electrical engineers hu (8)

handbook for electrical engineers hu (8)

Điện - Điện tử

... described in detail in other chapters of this handbook. In some cases, however, spe-cialized equipment has been developed for hydropower applications. The following information isintended to ... etc.Bulkhead gate. A gate used either for temporary closure of a channel or conduit before dewater-ing it for inspection or maintenance or for closure against flowing water. Bulkhead gates nearlyalways ... systems;elevators; intake and discharge gates and valves; penstock drainage and unwatering systems; stationdrainage system; air receivers for draft tube water depressing system; insulating and lubricating...
  • 28
  • 416
  • 0
handbook for electrical engineers hu (9)

handbook for electrical engineers hu (9)

Điện - Điện tử

... transformers with five-leg cores, transformers with the primarywinding outside the secondary winding, three-winding transformers, substation transformers, etc.Sinusoidal voltage is induced in windings ... byconsidering each pair of windings as a two-winding transformer.(10-9)where IAϭ rms amperes reference current referred to winding P; IPϭ rms amperes in winding P;ISPϭ rms amperes in winding ... amperes in winding S referred to winding P; ITPϭ rmsamperes in winding T referred to winding P; LPSϭ watts loadloss in windings P and S as a two-winding transformer at IA; LPT,LSTϭ similar;...
  • 152
  • 439
  • 0
handbook for electrical engineers hu (10)

handbook for electrical engineers hu (10)

Điện - Điện tử

... decreases with decreasing linear tip speed. For more information on wind turbine acoustics, refer to Ref. 11.11.5.13. Wildlife ConsiderationsBy karin SinclairAs wind turbines are installed across ... power in an insulated box, which has been successfully used for cooking. Solar cooking is helping many developing countries both by reducing the demands for local firewood and maintaining a cleaner ... useful for planning pur-poses, but being able to forecast the wind accurately for one or two days could provide a significanteconomic benefit, allowing utility engineers to plan ahead for wind...
  • 130
  • 403
  • 0
handbook for electrical engineers hu (11)

handbook for electrical engineers hu (11)

Điện - Điện tử

... ConceptsThe major change of industry restructuring is the use of markets to connect the information needsbetween each link in the supply chain instead of a separate company in a power geographic area.Several ... most influ-ential with regard to load–growth forecasts since predicting what will happen with these foreigncountries complicates it immensely instead of just focusing on what is happening within ... consumption in emerging Asia will double between 2002 and 2025.With such strong changes in an industry as this, forecasting becomes very difficult.Likewise, updating a forecast to be able to account for...
  • 14
  • 336
  • 0
handbook for electrical engineers hu (12)

handbook for electrical engineers hu (12)

Điện - Điện tử

... value in havingcash available to use for whatever investment opportunity may appear in the future. Before one personwill lend money to another, the interest earned must compensate the lender for ... after-tax cash income 627 550 601 664 745 3187Note: The original owner investment of $1000 returns over $3000 in 5 years for an internal rate of return of 54.5%.Leveraging the owner’s equity investment ... rate. If retained earnings are used in one project, they are unavail-able for use in others. The opportunity cost of using those funds is the rate of return that could beearned by investing those...
  • 18
  • 293
  • 0
handbook for electrical engineers hu (13)

handbook for electrical engineers hu (13)

Điện - Điện tử

... transmission line are not available.Combined Ice and Wind Loading. For combined ice and wind loading conditions, the glaze icethickness determined from Fig. 14-20 should becombined with a wind speed ... elongate about 0.01% for every1000-lb /in 2change in tension. In the preceding example, the increase in temperature caused an increase in length and sag and a decrease in tension, but the effect ... capital investmentFL ϭ line fixed-charge rate in percentADCnϭ per mile demand charge for line losses for year nAECn ϭ per mile energy charge for line losses for year nThe cost of line losses...
  • 142
  • 312
  • 0
handbook for electrical engineers hu (14)

handbook for electrical engineers hu (14)

Điện - Điện tử

... the largest voltage swing, and alsoto ensure that the ratio between the line winding and a possible tertiary winding is fixed. The current in the transformer windings contains hardly any harmonics ... fir-ing in rectifier operation. Minimum commutation margin control is used in inverter operation tomaintain the minimum voltage time area to ensure successful recovery of forward blocking capabilityafter ... lossesare lower for an HVDC line than an EHV ac line since the same current is flowing in two sets of con-ductors in a bipolar dc line compared to three conductors for a 3-phase ac line. Furthermore,...
  • 36
  • 370
  • 0
handbook for electrical engineers hu (15)

handbook for electrical engineers hu (15)

Điện - Điện tử

... with a tolerance (for each tie line). This allows the accuracy of tie-line telemetry information to be continuously monitored.Energy accounting maintains actual tie-line data for each hour of ... historic and economic information.This group of related software packages puts that information to work in forecasting loads, schedul-ing units and generation, evaluating Economy B type transactions ... OPERATIONS Interchange Scheduling. The interchange transaction scheduler (ITS) function supports the oper-ator in entering (defining), editing, and reviewing power interchange schedules with neighboringcontrol...
  • 50
  • 304
  • 0
handbook for electrical engineers (16)

handbook for electrical engineers (16)

Điện - Điện tử

... Deflection, Stress, in Loading in lb /in 2 in lb /in 2 in lb /in 2 in lb /in 2 in lb /in 2 in lb /in 2 in lb /in 211/4Bare 1.54 21301/2Љ ice 3.54 49001/2Љ ice + 8 lb 4.42 6110wind1Љ ice 6.47 ... Deflection, Stress, Deflection, Stress, Deflection, Stress, in Loading in lb /in 2 in lb /in 2 in lb /in 2 in lb /in 2 in lb /in 2 in lb /in 2 in lb /in 211/4Bare 1.45 2010 3.54 31351/2Љ ice 3.94 ... grounding mat.A most useful source of information concerning substation grounding is contained in the compre-hensive guide IEEE Standard 80-1986, IEEE Guide for Safety in AC Substation Grounding...
  • 52
  • 354
  • 1

Xem thêm