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The Ward-Leonard system, which is used in the control of large dc motors employed in rolling mills, is a highly flexible arrangement for effecting position and speed control of a separately excited dc motor. A simplified schematic diagram of such a system is shown in Figure (a), in which the tachometer, error detector, and amplifier are represented functionally rather than by electric circuit connections. Assume the motor field current is held constant, the load torque is ignored, and the generator speed is held constant under all conditions of operation. Determine the transfer functions Ωo/Eg and Ωo/Ee, and develop a block diagram for the system.
Explain DJNZ instructions of intel 8051 microcontroller? a) DJNZ Rn, rel Decrement the content of the register Rn and jump if not zero. b) DJNZ direct, rel Decreme
why open loop system is stable and why degree of stability varies in closed loop system
A pure sine wave along with a frequency of 100Hz is sampled at 150Hz. At which point one of the subsequent frequencies would you expect an alias? A) 75Hz B) 100Hz C) 150Hz
Number of holes in valence band: Derive the expression for number of holes in valence band and Fermi level in an intrinsic semiconductor. (b) By that percentage does the
CRM Framework There exist several ways to view CRM framework. Therefore, an operational strategic framework is more relevant to apply CRM in power/electricity business systems
Zener Diode A Zener diode is a sort of diode that allows current not only in the forward direction such as a normal diode, but as well in the reverse direction if the voltage
FIG. 2 Car Park Simulation Consider the above diagram, FIGURE 2, of the car park. The object of this assignment is to write a program to operate the barriers to allow the cars in
The Central Processing Unit The central processing unit is the brain of whole PLC. The CPU consist of a microprocessor memory chip and other integrated circuits to con
Q. In order to minimize output voltage offsets in practical op-amp circuits, one provides a dc path from each input terminal to ground, makes each input terminal see the same exter
compensation techniques and biasing arrangements of q-point
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