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Q. Working of On - off hook circuit in telephone hand set?
On/off hook circuit (sometimes termed as a switch hook) is nothing more than a simple single-throw, double-pole (STDP) switch placed across tip and ring. Switch is mechanically connected to telephone handset so that when telephone is idle (on hook), switch is open. When telephone is in use (off hook), switch is closed completing and electrical path through microphone between tip and ring of local loop.
Q. Explain working of three-phase transformers? Transformation in three-phase systems can be accomplished in either of two ways: (1) connecting three identical single-phase tra
A forward converter has the following parameters: input source voltage V s = 100 V, N 1 /N 2 = N 1 /N 3 = 1, magnetizing inductance L m = 5 mH, output inductor L o = 200 μH, C
Digital Transmission on Fading Multipath Channels We have discussed thus far digital modulation and demodulation methods for the transmission of information over two types of c
Q. Explain function of application layer? Layers of OSI model are as follows: (1) The Physical Layer: This defines an interface in terms of connections, voltage levels and
Q. Explain Continuous-data and discrete-data systems? A continuous-data system is one in which the signals at various parts of the systemare all functions of the continuous-tim
The stator and rotor of a three-phase, 440-V, 15-hp, 60-Hz, eight-pole, wound-rotor induction motor are both connected in wye and have the following parameters per phase: R1 = 0.5
Q. What do you mean by diversifiability of total risk? Traditional finance theory assets that the rate of return on risk assets depends on the size of business risk, financial
Flicker noise: I’d like to plot the graph of the flicker noise found in the data sheet for the amplifier (will be provided later) and also generate the equation for that graph sho
Q. A charge q(t) = 50+1.0t C ?ows into an electric component. Find the current ?ow.
Q. The twin-tee or notch network shown in Figure is often used to obtain band-reject characteristics. (a) Determine the transfer function V 2 /I 1 . (b) Find the angular freq
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