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Explain the effect of temperature on the resistivity of conducting materials. The resistance of most metals rises with rise of temperature whereas that of semiconductors and el
(a) What do you understand by Detroit-type automation? (b) What are the situations under which the above kind of automation can be planned ?
OBJECTIVES Use an NXT to control the speed of a DC fan motor. You will us a potentiometer to set the speed and the second fan motor as feedback. Use the circuit from Lab 1 to
Consider the common-emitter BJT circuit shown in Figure (a). The static characteristics of the npn silicon BJT are given in Figure (b) along with the load line. Calculate iB for v
Define and explain Numerical aperture? Figure shown below shows an incident ray to the fibre, The light bends at two interfaces, one at the air- core interface and the
Q. Explain the different types of probes used in cathode Ray Oscilloscope (CRO). Sol. probes: The probe performs the very important function of connecting the test circuit
Explain the Synchronous Machines? A synchronous machine, unlike an induction (or asynchronous) machine, only develops torque at a fixed, so called, synchronous speed - n s whi
Q. In the non inverting summing amplifier of Figure, let R d = 1k and M = 6. Find R f so that v =
With the help of energy bands explain how conduction takes place in insulators. Insulators: Substance as wood, glass, that do not permit the passage of current through them
Q. Series generator having a combined armature and field resistance of 0.4? is running at 1000 r.p.m. and delivering 5.5kw at terminal voltage of 110 V. If the speed is raised to 1
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