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Q. A 7.5-hp, 250-V, 1800-r/min shuntmotor, having a full-load line current of 26 A, is started with a four-point starter. The resistance of the armature circuit, including the interpole winding, is 0.48 ; and the resistance of the shunt-field circuit, including the field rheostat, is 350 . The resistances of the steps in the starting resistor are 2.24, 1.47, 0.95, 0.62, 0.40, and 0.26 , in the order in which they are successively cut out.When the armature current is dropped to its rated value, the starting box is switched to the next point, thus eliminating a step in the starting resistance.
Neglecting field-current changes, armature reaction, and armature inductance, find the initial and final values of the armature current and speed corresponding to each step.
Q. Describe Pulse dialling? Pulse dialling: 1. Generated through make and break contact. 2. DC Current pulse is generated. 3. Each number is separated by a short
Need a project in Optoelectronic with simulation in Optispice or Matlab.with complete report and presentation. ANy ideat about project and how much does it cost.
Q A residence is supplied with a voltage v(t) = 110√2cos120πt Vand a current i(t) = 10√2cos120πt A. If an electricmeter is used tomeasure the average power, find the meter reading,
Explain the difference between a microprocessor and an embedded microcontroller
OBJECTIVES Use an NXT to control the speed of a DC fan motor. You will us a potentiometer to set the speed and the second fan motor as feedback. Use the circuit from Lab 1 to
Consider the basic MOSFET circuit shown in Figure with variable gate voltage. The MOSFET is given to have very large V A , V T = 4V,and I DSS = 8 mA. Determine i D and v DS for
Q. How do you differentiate between dual beam and dual trace oscilloscope? Sol. There are two separate vertical input channels A, B and these use separate attenuator and prea
Gis for Distribution Network Management: You are well aware of the problems facing the distribution utilities to meet the day-to-day requirements of the power consumers, like
how to design 7 segment design using DSCH2 ?
HOW ARE FLIP-FLOPS USED IN BINARY COUNTERS
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