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A dc shunt machine is connected to 220 volt supply and is running at speed of 1200 r.p.m . its armature current is 60 amp and the torque of its shaft is 95 Nm . show whether the machine in running as a motor or generator.
Consider two continuous signals f(x, y) and g(x, y) that are separable, show that their convolution is also separable. Show that the 2-D Fourier transform of the rect function is the sinc function.
Identify how one can generate pulse width modulation using the 9S12DG256 microcontroller. Identify various applications that require PWM. Show how microcontroller PWM interface is used to drive servomotors, and discuss these motors.
An electric kettle needs six minutes to boil 2 kg of water from the initial temperature of 20"C. The cost of electrical energy required for operation is 12 paise, the rate being 40 paise per kWh.
What value of emitter resistor would you choose, if: a) You have to amplify the signal of a microphone that has an internal resistance of 100K using a Common Emitter bias configuration b) you have to drive a load of 50 with an Emitter Follower cir..
If mechanical input power is increased following synchronization but not field current, prove that the angle between the resultant current and the terminal voltage will always be delta/2. Prove it geometrically with a graph and also via the equati..
The current is due to free electrons moving through the wire at an average velocity of v meters/second. If the concentration of free electrons is 10^29 electrons per cubic meter and if they are uniformly dispersed throughout the wire, then what is..
Design the minimum-cost circuit and compare its cost with combined costs of two circuits that implement f and g separately. Assume that the input variables are available in both uncomplemented and complemented forms.
Design a counter that counts according to the sequence 0,5,1,4,2,3 in the ways listed. Provide a state diagram and show how unused states connect to the counting sequence. a. using T-Flip Flops b. using D-Flip Flops
We need to use asynchronous TDM and combine 50 digital sources. On average only 20% of the sources are active at any time. Each output slot carries 18 bits of data from each digital source. Also 8 extra bits are added to each frame for synchroniza..
The following represent solutions of the transmission line differential equations for some arbitrary function f(u): V(z,t) = 60 cos(1000t -5z) - 120 pi f (2t + z/100+12) V I(z,t) = 2 pi f (2t +z/100 +12) - cos (1000 t -5z) A a) what is the forward pr..
A three resistors connected in series with a DC power supply of 12 volts with a return path to the negative terminal of the power supply also connected to ground. The first resistor is labeled "R1", which is equal to 220 Ohms.
Design a circuit with input p and output f that will output f = 1 if the past three inputs (not including the current input), formed either 010 or 000. Otherwise, f = 0. Note: This is a Moore-type finite-state machine.
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