how to use barcode in rdlc report ELECTRICAL ENGINEERING in Software

Painting PDF-417 2d barcode in Software ELECTRICAL ENGINEERING

ELECTRICAL ENGINEERING
Generating PDF417 In None
Using Barcode generator for Software Control to generate, create PDF417 image in Software applications.
Recognizing PDF 417 In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
FIGURE 1665 Concatenated motors
PDF 417 Generation In Visual C#
Using Barcode generator for VS .NET Control to generate, create PDF-417 2d barcode image in .NET applications.
PDF417 Creator In VS .NET
Using Barcode generation for ASP.NET Control to generate, create PDF-417 2d barcode image in ASP.NET applications.
main motor would be reduced in the ratio of (24 4):24, or for a 60-cycle circuit, from 300 to 257 rpm If normal speed is desired, the smaller motor is simply cut out of the circuit The smaller motor may be 4, 6, 8, or 10 poles, as required These motors have been built up to 500-hp capacity for steel-mill main-roll drive
Printing PDF-417 2d Barcode In Visual Studio .NET
Using Barcode generation for .NET framework Control to generate, create PDF-417 2d barcode image in .NET framework applications.
PDF417 Printer In Visual Basic .NET
Using Barcode printer for VS .NET Control to generate, create PDF-417 2d barcode image in .NET framework applications.
85 Two- or Three-Speed Motors Either the squirrel-cage or the slip-ring type of motor can be arranged with one or more sets of windings so as to have different synchronous speeds This is known as pole changing That is, a motor may be rated 6 12 poles, 100 50 hp (75 38 kW), 1200 600 rpm One method of stator connection is shown in Fig 1666 This connection is for variable torque, two-speed, three-phase There are a number of other connections This type of motor is considerably more expensive than a single-speed motor Pole changing may be accomplished by a knife switch or by contactors 86 Adjustable-Speed Brush-Shifting AC Motors These motors may be of either the series or shunt speed characteristic type They are used where an adjustable-speed ac motor is required and the slip-ring type does not suit or is of too low efticiency at low speeds
UCC - 12 Generator In None
Using Barcode generation for Software Control to generate, create EAN 128 image in Software applications.
GS1 - 12 Printer In None
Using Barcode maker for Software Control to generate, create UPC-A image in Software applications.
Series Type The motor with a series speed characteristic consists of a stator winding like that of a squirrel-cage motor The rotor is wound like a dc armature with a commutator, except that it is wound for three or more phases If the power line is three-phase, the rotor may be wound for an increased number of phases, the only limit being the complexity of brush gear and transformer The number of brush-holder stud locations equals the number of pairs of poles times the rotor phases, but with a large number of phases, part of the studs for each phase are
Making Data Matrix In None
Using Barcode drawer for Software Control to generate, create ECC200 image in Software applications.
Print Code 3/9 In None
Using Barcode printer for Software Control to generate, create Code 3 of 9 image in Software applications.
FIGURE 1666 Connections for two-speed motors
Drawing Code 128 Code Set C In None
Using Barcode printer for Software Control to generate, create Code-128 image in Software applications.
Creating Barcode In None
Using Barcode creator for Software Control to generate, create bar code image in Software applications.
CHAPTER SIXTEEN
EAN-8 Supplement 5 Add-On Creation In None
Using Barcode printer for Software Control to generate, create EAN8 image in Software applications.
Data Matrix ECC200 Encoder In Visual Basic .NET
Using Barcode maker for .NET Control to generate, create ECC200 image in VS .NET applications.
sometimes omitted Power is applied to the primary or stator leads, each phase of the stator winding being in series with one phase of the primary of a rotor transformer, the secondary of this transformer being in series with the rotor windings Figure 1667a shows this connection If the ux set up by the primary and that set up by the secondary winding have their axes in the same line, they oppose each other and no torque will be developed For this reason, it is necessary to shift the brushes so that there will be a resultant component of these uxes or magnetic eld in a direction to produce torque This torque is caused by the repulsion between the current in the rotor coils and the magnetic eld A set of speed-torque curves is shown in Fig 1667b, each curve being marked with the degrees of brush shift In this motor, the maximum torque is developed with a brush shift of about 15 With the brushes set to give full-load starting torque, the starting current is about 150 to 175 percent The ef ciency at full load, full-load speed is slightly less than that of a slip-ring motor At lower speeds, the ef ciency is better than that of the slip-ring motor with secondary resistance The cost is higher The power factor is better than that of a slip-ring motor These motors are to a great extent superseded by the shunt-type motors for constant-torque loads For small sizes, the motors may be thrown across the line, with the brushes in the low-speed position For larger sizes, a Y-delta switch is sometimes required to give easier starting conditions Therefore, the only controls besides the rotor transformer are a line switch and possibly a Y-delta starting switch Shunt Type The stator winding (the secondary) is constructed like the stator (primary) winding of an induction motor, except that phases are electrically independent and both ends of each phase are brought out for connection to the commutator brushes The rotor has two windings One rotor winding (primary) is identical in construction with the stator (primary) winding of a normal induction motor and is connected to the collector rings, to which the power is applied The adjusting winding, which is in the top of the slots occupied by the primary winding, is connected to the commutator in the same manner as in a dc motor (Fig 1668) The motor may be compared with a wound-rotor induction motor having its primary windings in the rotor and its secondary on the stator The motor is provided with two brush-holder yokes arranged to shift in different directions One end of each phase of the stator (secondary) winding is connected to brushes on one brush
Code 3 Of 9 Printer In None
Using Barcode maker for Word Control to generate, create Code 3 of 9 image in Microsoft Word applications.
Data Matrix Drawer In Java
Using Barcode generator for BIRT reports Control to generate, create Data Matrix ECC200 image in Eclipse BIRT applications.
Make Matrix 2D Barcode In VS .NET
Using Barcode generator for ASP.NET Control to generate, create 2D Barcode image in ASP.NET applications.
Barcode Creation In None
Using Barcode generator for Online Control to generate, create barcode image in Online applications.
Recognizing EAN-13 Supplement 5 In Visual C#
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET framework applications.
Code 39 Extended Creation In Java
Using Barcode drawer for Android Control to generate, create Code 39 Full ASCII image in Android applications.
Copyright © OnBarcode.com . All rights reserved.