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Q. Explain Time-Dependent Circuit Analysis?
The response of networks to time-varying sources is considered in this chapter. The special case of sinusoidal signals is of particular importance, because the low-frequency signals (i.e., currents and voltages) that appear in electric power systems as well as the high-frequency signals in communications are usually sinusoidal. The powerful technique known as phasor analysis, which involves the use of complex numbers, is one of the electrical engineer's most important tools developed to solve steady-state ac circuit problems. Since a periodic signal can be expressed as a sumof sinusoids through a Fourier series, and superposition applies to linear systems, phasor analysis will be used to determine the steady-state response of any linear system excited by a periodic signal. Thus the superposition principle allows the phasor technique to be extended to determine the system response of a linear system.
The total response of a system containing energy-storage elements (capacitors and inductors) is analyzed in terms of natural and forced responses (or transient and steady-state responses). The Laplace transformation, which provides a systematic algebraic approach for determining both the forced and the natural components of a network response. The concept of a transfer function is also introduced along with its application to solve circuit problems. The network response to sinusoidal signals of variable frequency is investigated. Also, two-port networks and block diagrams, in terms of their input-output characteristics.
Q. What do you mean by Resistance? An ideal resistor is a circuit element with the property that the current through it is linearly proportional to the potential difference acr
which ckt. Or components using for irregular ac sine wave change into pure sine wave.......
The conditions necessary for sustained oscillation can be summarized as follows: 1. There should be a positive feedback. 2. The loop gain of the circuit must be equal to or g
Q A60-Hz, 100-kVA, 2400/240-V(rms) transformer is used as a step-down transformer from a transmission line to a distribution system. Consider the transformer to be ideal. (a) Fi
Explain instruction sets of 8085. a) Data transfer group - MOV, MVI, LXI. b) Arithmetic group - ADD, SUB, INR. c) Branch group - JMP, JNZ, CALL. d) Logical group -
Q. Sketch the timing diagram for a 4-bit ripple counter which uses T flip-flops.
Define temperature coefficient of resistance. Temperature coefficient of resistance is explained as the change in resistance of a material per ohm per degree change in temperat
Characteristics of magnetic field / flux lines: i. Forming a closing loop ii. Did not crossed against each other iii. Has a certain direction iv. Repel among one anot
A 13.8 kV feed er circui t breaker has a 600:5 multira tio curr ent transform er with charact eristics as show n in Figure 5.11. Th e max - imum load on the feed er is 80 A pri mar
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
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