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a. Describe the meaning of standing wave ratio. What is the formula for it, if the load is purely resistive? Why is a high value of SWR often undesirable?
b. Determine how the constant intermediate frequency is achieved in the superhetrodyne receiver and also explain the given terms:-
i) sensitivity,
ii) selectivity and
iii) image frequency
Q. What do you mean by Oscilloscope? To measure time-varying signals (voltages and currents), an instrument known as an oscilloscope is employed. It can be used as a practical
Both DTL and TTL are based on the saturating BJT inverter. The transistor acts as a switch that connects or disconnects the collector and emitter. The switch is closed when suffici
Covert Analog Signal into Digital Signal A strain gauge is used in Wheatstone Bridge configuration. The output from the Wheatstone Bridge varies from zero to a maximum strain
Q. You are to construct a modified truth table for the circuit realization of the SRFF shown in Figure. As indicated in the text, you guess an output and then go back ato check it
Q. Convert the following DECIMAL numbers into BINARY, double check by converting the result BINARY to DECIMAL. Assume all binary numbers are represented by 12 bits on LHS of binary
DC Link Scherbius Drive This type of scheme is shown in figure. This circuit allows both sub synchronous and super synchronous speed control. In case of sub synchronous spe
Q. A 5-MVA, 66:13.2 kV, three-phase transformer supplies a three-phase resistive load of 4500 kW at 13.2 kV. What is the load resistance in ohms as measured fromline to neutral on
history of engineering economices
Three sine waves along with frequencies 100Hz, 200Hz and 350Hz and with amplitudes of 1V, 2V and 1.5V correspondingly, are added together to make a single waveform. What is the min
What is Global Positioning Satellites (GPS) Global positioning satellite (GPS) systems are used to determine exact location of a car, ship, airplane or any conveyance that trav
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