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This machine is now connected as a cumulatively compounded dc motor with Radj = 120Ω
(a) What is the no-load speed of this motor?
(b) What is its full-load speed?
(c) What is its speed regulation?
(d) Plot the torque-speed characteristic for this motor.
What are the most important forces in the macro-environment facing companies today?
The DC shunt motor is running at full load with a supply voltage of 440 V and a supply current of 70 A. The rotation speed in full load is 1000 rpm, the field resistance is 200 Ohm and the armature resistance is 0.2 Ohm.
An ideal PEM fuel cell with an cadency of 83% needs 30.35g of hydrogen to generate IkWh. For a real cell with half that efficiency, how much hydrogen per day woad be needed to power a house that uses 25kWh per day?
How to Program PIC18 Microcontroller in C. ?? (with expalanation and examples )
For the closed-loop system with plant model and controller given by G(s) = (s2+81)/(s2(s2 + 100)) D(s) = (K (S+1))/(S+13) (a) Find the locus of the closed-loop roots (poles) with respect to K;
Assume that your grades will be lower than expected at the end of the semester, and write out a strategy for recovering from these low grades.
A 3-phase,4pole star connected turbo alternater has a cylindrical rotar. The reactance and resistance perphase of winding is 2.5 ohms and 0.15 ohms.The alternater hasterminal potential difference of 6600V when delivering a current of250Amps.
Design a combinational logic that determines if a correction factor of 0110 should be added to the initial sum of the BCD digits will rate high.
A power transistor for which Tjmax=180degrees Celsius can dissipate 50Watts at a case temperature of 50degrees. If it is connected to a heat sink using an insulating washer for which the thermal resistance is .6degrees Celsius/Watt
A rectangular coil carrying a current of 2 A (counter-clockwise) is located on the xy-plane in the presence of B = 2ux - uy + 1.5uz . Its corners are the points (±1, ±2, 0). Find the force experienced by each of the four sides of the rectangle.
a wheat stome bridge has following ab 20 ohm bc 24ohm cd 5 ohm da 50 ohm bd 3 ohm. adca voltage source of 220v
A 10 GHz radio link is established between two antennas separated by 40 Km , find the necessary height of the antennas , assume equal antenna heights and standard atmospheric conditions.
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