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Q. A dc series motor operates at 750 r/min with a line current of 100 A from the 250-V mains. Its armature-circuit resistance is 0.15 and itsseries-field resistance is 0.1 . Assuming that the flux corresponding to a current of 25 A is 40% of that corresponding to a current of 100 A,determine the motor speed at a line current of 25 A at 250V.
Data rates in PSTNs: A voice channel in a PSTN is band limited with a nominal bandwidth of 3.1 kHz. A first-cut estimate of this can be attained from Nyquist's theorem that app
Role of Consumers in Distribution Reform In the reforms procedure, mandatory metering for all consumers is being implemented. Consumers should implement this measure. Public
Q. Find the voltage gain of the overall circuit? (a) Consider the circuit of the inverting amplifier shown in Figure (a), including an ideal op amp. Show that the voltage gain
Explain the effect of impurity on the conductivity of a semiconductor. To form a semi-conductor conductive, a small amount of appropriate impurity is added. This is then termed
Q. What do you eman by Digital Circuits? The use of nonlinear devices (BJT and FET) in constructing linear amplifiers. Although these devices are inherently nonlinear, their op
Q. A certain 10-hp, 230-V motor has a rotational loss of 600 W, a stator copper loss of 350 W, a rotor copper loss of 350 W, and a stray load loss of 50 W. It is not known whether
Mode1 When the positive pulse from PWM is applied to the transistor Q shown in figure it gets turned on. In this condition current flows through transistor Q and.
Time constant at decay of current In decay of current by an inductor, a method to find values of time constant similar as in rise of current through an inductor. The difference
Assume you are working for an SME operating in the microelectronics sector. You are required to plan a new product development project. This is an internal project, so it does not
Example of binary subtraction - positive number Case 1. Positive number is more than negative number ( i e, answer is positive) Example subtract 4510 ( 1011012
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