Subject and UNIT: Statistics and Numerical Methods: Unit I: Testing of Hypothesis
Many problems in engineering require that we decide whether to accept or reject a statement about some parameter. The statement is called a hypothesis and the decision-making procedure about the hypothesis is called hypothesis testing.
Subject and UNIT: Electric Circuit Analysis: Chapter - 3: Basic Circuit Analysis - AC
The current i1 leads i2 by ϕ degrees or i2 lags behind i1 by ϕ. On the other hand, the current i3 = Im sin (wt + ϕ) is said to lead i1 by ϕ degrees.
Waveform, Formula, Solved Example Problems
Subject and UNIT: Electric Circuit Analysis: Chapter - 3: Basic Circuit Analysis - AC
Voltages and currents varying as sine functions of time find more practical use. Hence, the rest of this topic will be devoted to the study of AC sinusoidal quantities.
Formula, Solved Example Problems
Subject and UNIT: Electric Circuit Analysis: Chapter - 3: Basic Circuit Analysis - AC
Form factor is defined as the ratio between RMS value and average value.
AC Circuit Analysis
Subject and UNIT: Electric Circuit Analysis: Chapter - 3: Basic Circuit Analysis - AC
he heat produced by an alternating current of maximum value say Im will not be equal to the heat produced by a direct current of Im amperes.
Statement, Formula, Solved Example Problems
Subject and UNIT: Electric Circuit Analysis: Chapter - 3: Basic Circuit Analysis - AC
Since the alternating quantity is a function of time, it becomes difficult to specify the quantity as so many amperes or volts. One of the ways to represent it is by an average value.
Subject and UNIT: Electric Circuit Analysis: Chapter - 3: Basic Circuit Analysis - AC
Alternating current and voltage sources are widely used in practice. Unlike the DC source, the AC source gives a voltage (or current) that varies with time.
Network Theorems - DC | Electric Circuit Analysis
Subject and UNIT: Electric Circuit Analysis: Chapter - 2: Network Theorems - DC
Electric Circuit Analysis : Chapter - 2 : Network Theorems - DC : Unsolved Problems
Network Theorems - DC | Electric Circuit Analysis
Subject and UNIT: Electric Circuit Analysis: Chapter - 2: Network Theorems - DC
Electric Circuit Analysis : Chapter - 2 : Network Theorems - DC : Review Questions
Network Theorems - DC | Electric Circuit Analysis
Subject and UNIT: Electric Circuit Analysis: Chapter - 2: Network Theorems - DC
Electric Circuit Analysis : Chapter - 2 : Network Theorems - DC : Two Mark Questions and Answers
Statement, Proof, Circuit Diagram, Formula, Solved Example Problems
Subject and UNIT: Electric Circuit Analysis: Chapter - 2: Network Theorems - DC
Millman's Theorem states that 'n' voltage sources (V1, V2, ... Vn) are in parallel having their internal resistances (R1, R2, ... Rn) respectively. The arrangement can be replaced by a single voltage source 'V' and resistance 'R' as given below figure (a) (b).
Statement, Proof, Circuit Diagram, Formula, Limitations, Solved Example Problems
Subject and UNIT: Electric Circuit Analysis: Chapter - 2: Network Theorems - DC
In any linear network containing bilateral linear resistances and energy sources, the ratio of a voltage V introduced in one mesh to the current I in any second mesh is the same as the ratio obtained if the positions of V and I are interchanged, other voltages sources are being removed.