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Q. Consider a 240-V supply feeding a resistive load of 10 kW through wires having a total resistance of R = 0.02 . For the same load, let a 120-V supply be used with a total wire resistance of R/2 = 0.01 . Compute the I2R loss in the lines for both cases and compare.
When three resistors R1, R2 and R3 are connected in parallel as shown in the diagram. For these resistors the equivalent resistance is given by: a. Derive a rule to
Q. What is a darlington pair? The Darlington circuit consists of two cascaded emitter followers with infinite emitter resistance in the first stage.
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
Q. A JK flip-flop is shown in Figure (a). (a) Modify it to operate like the D flip-flop of Figure (b). (b) Modify the JK flip-flop to operate like the T flip-flop of Figure (
Q. What is the basic principle of oscillation in an RC phase shift oscillator. With a neat sketch explain its working? For producing oscillations there must have positive feedb
Normal 0 false false false EN-IN X-NONE X-NONE High Frequency Electronic Ballast
OBJECTIVES OF NEP: Access to Electricity for whole households within the next five years. Availability of Power to be ensured to meet the demand through 2012. Pe
Q. Regions of operation in BJT ? Transistor find many applications like amplifier, switch etc. depending upon the polarity and the magnitude of the applied voltages across the
Q. Discuss the closed-loop behavior? Consider an elementary feedback control system, as shown in Figure, with H = 1. The output variable c and the input e to the direct transmi
Q. On a CD amplifier R s = 4k?, µ =50 and r =35k?. Evaluate the voltage gain A v . A v = V o /V i = µRs / (µ+1)Rs + r
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