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with a simple circuit,explain the construction of Direct Reading Probe of a cathode ray oscilloscope
develop and explain series and parallel magnetic circuits?
Q. pn-Junction under Bias? Let an external source be connected between the p- and n-regions, as shown in Figure (a). (b) shows the circuit representation of the pn-junction or
Q. (a) Consider a three-phase star or wye half-wave recti?er with a purely resistive load R. Determine: (i) efficiency, (ii) formfactor, (iii) ripple factor, (iv) TUF, and (v) PIV
Q. How oscillations start up in an oscillator? The noise voltage produced due to the random motion of electrons in resistors or in active devices provides the starting voltage
Explain Hysteresis loop. Hysteresis loop: In a ferromagnetic material, the flux density B raises while external applied magnetic field H to it is raised. When the saturation
A large induction motor is usually started by applying a reduced voltage across themotor; such a voltage may be obtained from an autotrans- former. A motor is to be started on 50%
Q. What do you mean by Companding? In order to lower the crest factor of a waveform, so as to produce better performance, a process known as companding is used. It works like a
Q. (a) Two amplifiers, which can be represented by the model of Figure of the text, are connected in cascade (that is, head to tail), as shown in Figure. Let their parameters be R
PIVOT PIN MOVEMENT
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