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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.
Q. Define Power-Supply Rejection Ratio? An op amp's ability to disregard changes in power-supply voltage is measured by the power- supply rejection ratio (PSRR), which is speci
cite a specific example in which the engineer must provide maximum efficiency for a given cost.
How you write this number in letters. 20,000.000.000
how i make this and how cost of overall
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
Define Causal System - Discrete Time Systems? A causal system is one which produces an output only when there is an input. All physical systems are causal. In general, a causal
Pinch off Voltage: The current in N-JFET because of a small voltage V DS is described by: I DSS = (2a) W/L (qN d μ n V DS ) In which 2a = channel thickness
What is Threaded system. Threaded system: At times we require implementing an operating system which can process multiple threads. Many threads are handled through the kernel
Discuss DMA definition. Direct memory access (DMA) is a process wherein an external device takes over the control of system bus by the CPU. Direct memory access is for high-sp
Consider an RLC series circuit excited by v (t) = 100√2 cos 10t V, with R = 20 , L = 1 H, and C = 0.1 F. Use the phasor method to find the steady-state response current in the cir
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