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barcode reader code in asp.net The noload test of a singlephase induction in Software
1823 The noload test of a singlephase induction Recognizing QR Code In None Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications. Printing QR Code In None Using Barcode encoder for Software Control to generate, create QR image in Software applications. motor is made by running the motor without load at rated voltage and rated frequency Derive the equivalent circuit of a singlephase induction motor for the noload test [Hint: The noload slip is very small] QR Code Recognizer In None Using Barcode scanner for Software Control to read, scan read, scan image in Software applications. QR Code Drawer In Visual C#.NET Using Barcode creation for VS .NET Control to generate, create Quick Response Code image in .NET framework applications. 1824 Derive the equivalent circuit of a singlephase
Making Quick Response Code In VS .NET Using Barcode generation for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications. QR Code ISO/IEC18004 Printer In .NET Framework Using Barcode creator for Visual Studio .NET Control to generate, create QR Code image in Visual Studio .NET applications. induction motor for the lockedrotor test Neglect the magnetizing current
QR Code ISO/IEC18004 Creation In VB.NET Using Barcode drawer for VS .NET Control to generate, create Quick Response Code image in .NET applications. Bar Code Drawer In None Using Barcode generator for Software Control to generate, create bar code image in Software applications. 1825 The design for a 1 hp, twopole, 115V universal 8
Code 3/9 Encoder In None Using Barcode generator for Software Control to generate, create Code 39 Full ASCII image in Software applications. Generating GS1  13 In None Using Barcode encoder for Software Control to generate, create GTIN  13 image in Software applications. motor gives the effective resistances of the armature and series eld as 4 and 6 , respectively The output torque is 017 Nm when the motor is drawing rated current of 15 A (rms) at a power factor of 088 at rated speed Find: a The fullload ef ciency b The rated speed c The fullload copper losses d The combined windage, friction, and iron losses e The motor speed when the rms current is 05 A, neglecting phase differences and saturation Make Barcode In None Using Barcode drawer for Software Control to generate, create barcode image in Software applications. Making UCC128 In None Using Barcode printer for Software Control to generate, create UCC.EAN  128 image in Software applications. 1826 A 240V, 60Hz, twopole universal motor
ITF14 Maker In None Using Barcode encoder for Software Control to generate, create Case Code image in Software applications. Barcode Maker In None Using Barcode creation for Online Control to generate, create bar code image in Online applications. operates at a speed of 12,000 rev/min on full load and draws a current of 65 A at 094 power factor lagging The series eldwinding impedance is 455 + j 32 ohms, and the armature circuit impedance is 615 + j 94 ohms Find a The back emf of the motor b The mechanical power developed by the motor c The power output if the rotational loss is 65 W d The ef ciency of the motor Draw Matrix 2D Barcode In Java Using Barcode printer for Java Control to generate, create Matrix Barcode image in Java applications. Painting Bar Code In ObjectiveC Using Barcode maker for iPhone Control to generate, create barcode image in iPhone applications. 1827 A singlephase motor is drawing 20 A from a
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SpecialPurpose Electric Machines
What value of capacitor connected across the circuit will be necessary to raise the power factor to unity the speed of the motor and the torque available at the maximum permissible load
1828 A threephase induction motor is required to
operate from a singlephase source One possible connection is shown in Figure P1828 Will the motor work Explain why or why not Speed, percent of full load 4 Resistor 2 1 0 280 240 200 160 120 80 0 4 3 2 1 0
v + ~
Field
(a) b c
40 80 120 160 Torque, percent of full load (b) Figure P1831 Figure P1828
1832 Which singlephase motor would you choose for 1829 In performing a brakeload test upon a 1/4hp capacitorstart motor with its output adjusted to rated value, the following data were obtained: E = 115 volts; I = 38 amp; P = 310 W; rev/min = 1725 Calculate: a Ef ciency b Power factor c Torque in poundinches the following applications a Inexpensive analog electric clock b Bathroom ventilator fan c Escalator which must start under all load conditions d Kitchen blender e Table model circular saw operating at about 3,500 rev/min f Handheld circular saw operating at 15,000 rev/min g Water pump Section 4: Motor Performance and Selection 1830 What type of motor would you select to perform
the following tasks Justify your selection a Vacuum cleaner b Refrigerator c Air conditioner compressor d Air conditioner fan e Variablespeed sewing machine f Clock g Electric drill h Tape drive i XY plotter 1833 The power required to drive a fan varies as the
cube of the speed If a motor driving a shaftmounted fan is loaded to 100 percent of its horsepower rating on the top speed connection, what is the horsepower output in percent of rating: a At a speed reduction of 20 percent b At a speed reduction of 30 percent c At a speed reduction of 50 percent 1834 An industrial plant has a load of 800 kW at a
power factor of 08 lagging It is desired to purchase a synchronous motor of suf cient capacity to deliver a load of 200 kW and also serve to correct the overall plant power factor to 092 Assuming that the synchronous motor has an ef ciency of 91 percent, determine its KVA input rating and the power factor at which it will operate 1831 A 5hp, 1,150rev/min shunt motor has its speed
controlled by means of a tapped eld resistor as shown in Figure P1831 With the tap at position 3, determine A P P E N D I X
Linear Algebra and Complex Numbers
A1 SOLVING SIMULTANEOUS LINEAR EQUATIONS, CRAMER S RULE AND MATRIX EQUATION
The solution of simultaneous equations, such as those that are often seen in circuit theory, may be obtained relatively easily by using Cramer s rule This method applies to 2 2 or larger systems of equations Cramer s rule requires the use of the concept of determinant The method of determinants is valuable because it is systematic, general, and useful in solving complicated problems A determinant is a scalar de ned on a square array of numbers, or matrix, such as det (A) = A = a11 a21 a12 a22 (A1) In this case the matrix is a 2 2 array, with two rows and two columns and its determinant is de ned as det = a11 a22 a12 a21 (A2)

