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Define Time and Shift Invariant?
Time and shift invariant means that the system characteristics and shift do not change with time, i.e. the system output is independent of the time the input is applied. For example, if the input x[n] gives the output y[n], then the input x[n - k] will give the output y[n - k]:
x[n] → y[n]
x[n - k] → y[n - k]
that is a delay in the input causes a delay by the same amount in the output signal.
Loss Reduction and Efficiency Improvement of Electrical Energy 1. There are inherent losses in Transmission and Distribution of electrical energy from Generating station
what is emf
Define Smoothing the Output? The output of a DAC is stepped, such as the analog waveforms which were sampled and held. This stepped, or staircase effect is a distortion, and it
Types of cells and batteries are:- a. Carbon-zinc cell b. Nickel-cadmium cell c. Alkaline celld. d. Edison cell e. Mercury cell
Hexadecimal is of use in IT because (1) It is a compact system (e.g. only 3 digits represent the number 986) (2) As 16 are a power of 2 it turns out to be quite easy to conv
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explain appropriate first aid procedure to be followed in case of electric shock
Boost Converter The boost converter has its output voltage always greater than input voltage like a buck converter boost converter has two modes.
Q. An integrator as shown in Figure is to be designed to solve dy(t) / dt + 2000y (t) = 0 with y(0) = 5. If R i is chosen to be 10 k, find C f .
Starting Methods for Polyphase Induction Motors When high starting torques are required, a wound-rotor induction motor, with external resistances inserted in its rotor circuits
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