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i) Calculate the eigenvalues of a 100 hp, 1150 rpm dc machine at rated flux with no extra load inertia. Use the "hot" value of the armature resistance. Calculate estimates of the resulting speed overshoot and settling time (within 2%) for a step armature voltage input, beginning at an initial current of 0.
ii) Now assume that a closed-loop current regulator is introduced as shown in Fig. 2.7-3 of the book. What are the new eigenvalues of the motor-plus-regulator system if the current regulator gain Ki is set to 10? Ignore the mechanical damping constant (B=0) in Fig. 2.7-3. Calculate estimates of the resulting overshoot and settling time for a step current input, beginning at an initial current of 0.
iii) Now consider a closed-loop speed control system as shown in Fig. 2.7-5. Assume that the current regulator dynamics are very fast compared to the outer speed loop and the current regulator gain is high enough so that it is effectively "ideal". Calculate the eigenvalue of this closed-loop system for Kp=100, τz=∞. (Assume B=D=0 again.) Calculate the resulting output speed overshoot and approximate settling time of the closed-loop system for a step speed command input.
With respect to serial communication define the parity. Besides the synchronization given by the use of start and stop bits, an additional bit termed as a parity bit may opt
Write a computer program to implement the finite difference method. The program can be in any computer language that is available within the school. Set up the code to find the pot
• Vectors can be represented in terms of basis vectors, a set of vectors that span the vector space • Mostly will use i, j, k to denote a Cartesian right-handed basis set • V
Objective of Long-Term Plans for Technical Loss Reduction The primary objectives of strengthening and improvement of sub-transmission and distribution system in the long-term
What are the functions of bus interface unit (BIU) in 8086? (a) Get instructions from memory. (b) Get data from memory and I/O ports. (c) Write data to memory and I/O por
You will develop a simulation that will consist of the following five components: Controller: This script component controls the simulation. It shall permit the user to: 1. C
Q. A 300-kVA transformer has a core loss of 1.5 kW and a full-load copper loss of 4.5 kW. (a) Calculate its efficiency corresponding to 25, 50, 75, 100, and 125% loads at unity
a. Explain the meaning of amplitude modulation? Show that the AM output having two sidebands and the carrier frequency. b. Illustrate that the equivalent parallel impedance of a
Determine the change in IC from 25ºC to 175ºC for the transistor defined in this table for fixed-bias with RB = 240 k and = 100 due to the S(VBE) stability factor.
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