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A wire of length L and 3 identical cells of negligible internal resistances are connected in series. Due to the current, the temperature of the wire is raised by T in atime t. A number N of similar cells is now connected in series with a wire of the samematerial and cross-section but of length 2L. The temperature of the wire is raised by thesame amount T in the same time. determine what is The value of N .
(a) Determine the steady state error for a unit step input R(s) = 1 / s. (b) Assume that the complex poles dominate, and determine the overshoot and settling time to within 2% of the final value.
Design a simple unipolar drive circuit such that the electrical time constant is 2 msec at phase turn-on and 1 msec at turnoff. The stepping rate is 300 steps per second. A three-phase variable-reluctance stepper motor has parameters.
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 60.0-gram mass is attached at the 27.0-cm mark, the fulcrum must be moved to the 39.2-cm mark for balance.
Design a 300W PFC BL-Zeta converter operating in DCM (Output Inductor) to maintain a DC link voltage of 100V with percentage ripple of 4%. The permitted ripple in the input side inductor and intermediate capacitor is given as 20%.
Light is incident from air to glass at Brewster's angle. Determine the incident and transmitted angles. Glass has refractive index n2=1.45.
a machine processor address a maximum 2^24 bytes of memory. What is the maximum number of 32 bit words that can be store in memory.
A stepper motor is being used to move a crane. The motor has the following properties: Holding torque = 2 m.kg, dynamic torque = 1.5 m.kg, and detent torque = 0.5 m.kg. Through a 1:5 gear, the motor (motor connected to the smaller gear)
A 3-D cubic unit cell contains four atoms whose centers are positional halfway up along each of the vertical cell edges and one atom each centered in the middle of the top and bottom faces. Make a sketch of the unit cell.
Sketch the Capacitance-Voltage characteristics for both devices based on part (d) by giving appropriate labeling to the voltage and capacitance axis. You may assume high f measurements.
The 9S12G128 event counter is configured and enable for rising edge. A 0.5 Hz waveform (TTL logic levels) is applied to the counter input. With the counter starting at 0x0010, what is the data contained in the event counter
In a steam plant where you work, the turbine develops 1000 kW. The heat supplied to the steam in the boiler is 2800 kJ/kg and the heat rejected by the steam to the cooling water in the condenser is 2100 kJ/kg.
A system samples a sinusoid of frequency 480 Hz at a rate of 100 Hz and writes the sampled signal to its output without further modification. Determine the frequency that the sampling system will generate in its output.
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