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Switching characteristics during turn on
A positive gate pulse between gate and cathodeis sufficient to turn on a thyrisotr. In this period thyristor changes its state from forward off blocking state to on state and starts conduction. Time is turn on time of a thyristor which can be divided into three intervals.
a.Delay time (td)
b.Rise time (tr) and
c.Spread time ( ts)
A rifle with a mass of 3,5 kg fires a bullei with a mass of 120 g with a muzzle velocity of 420 mls. Calculate the following: 1.4.''l The momentum before the rifle was fired ''1.4.
examples in building electric helicopter using cardboard, balsa wood, scotch tape, glue, binder clips, rubber bands, rubber stoppers, etc. attached to a 12v power supply
Question : a) State six desirable requirements of a generic photo-detector. b) A gallium arsenide pin photo-diode has an intrinsic layer of width 1 μm. The diode is revers
if load is removed so which motor will run fast? series or shunt?
Q. Explain Pulse-Code Modulation? PCM is the simplest and oldest waveform coding scheme for processing an analog signal by sampling, quantizing, and binary encoding. Figure sho
derive transfer function of S= 2.25+j4.5
Solid-State Control of Synchronous Motors The speed of a synchronous motor can be controlled by changing its supply frequency. With variable-frequency control, two modes of op
Q. Draw and explain a differential circuit A differentiator is a high pass RC circuit having a very small time constant. It is a circuit which gives an output voltage proportio
Q. A common requirement is conversion from one digital code to another.Develop a table of the BCD code and the excess-3 code to be derived from it, for the decimal digits 0 to 9. S
Explain time multiplexed space switching? With a neat diagram illustrate its operation. Ans: Time division switches where an outlet or an inlet corresponded to a single s
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