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1. Explain the construction and working of Calomel electrode
2. Derive an expression for the electrode potential of a glass electrode.
3. What are ion selective electrodes? Explain the working principle of an ion selective electrode.
4. Explain the construction and working of Silver-Silver chloride electrode.
5. What are the advantages and disadvantages of glass electrode?
6. Two copper electrodes placed in copper sulphate solutions of equal concentration are connected to form a concentration cell. (1) What is the cell voltage? (2) If one of the solutions is diluted until the concentration of Cu2+ ions is 1/5th of its original value, what will be the cell voltage after dilution?
Q. Discuss the output waveforms for a differentiating circuit. The output waveform from a differentiating circuit depends upon the time constants and shape of the input wave.Th
List the addressing modes supported by 8051. 1. Register addressing 2. Direct addressing 3. Register indirect addressing 4. Immediate addressing 5.Register addres
Describe 74LS139 memory decoder. The 74LS139 is a dual 2-to-4 line decoder. This contains two separate 2-to-4 line decoders - all with its address, output and enable connection
Design a logic circuit when to provide an output when any two or three of four switches are closed.
Q. Explain the significance of the Coupling capacitor and the RE - CE circuit. The function of the coupling capacitor is to isolate the amplifier input circuit from the source.
Disadvantages of SDR 1. Power consumption is more due to rapid switching of modes 2. Hardware design is not easy 3. Software bugs exist in the system
emitter followers regulator
Q. Grade of Service In loss systems? Grade of Service : In loss systems, traffic carried by the network is normally lower than actual traffic offered to the network by subscri
Q. A six-pole, double-layer dc armature winding in 28 slots has five turns per coil. If the field flux is 0.025 Wb per pole and the speed of the rotor is 1200 r/min, find the value
Show that the infiltration volume estimated using Horton's infiltration equation between times t1 and t2 is given by; F =f c (t 2 -t 1 )+(f 1 -f c )(1-e -k(t2-t1) )/k Use the
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