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The speed of a separately excited DC motor is controlled by asingle-phase semiconverter . The field current, which is alsocontrolled by a semiconverter, is set to the maximum possiblevalue. The AC supply voltage to the armature and field convertersis one phase, 208 V, 60 Hz. The armature resistance is 0.25Ω, the field resistance is 147 Ω, and the motor voltageconstant Kv is 0.7032 V/A rad/s. The load torque is 45Nm at 1000 RPM. The viscous friction and no-load losses arenegligible. The inductances of the armature and field circuits aresufficient enough to make the field and armature currentscontinuous and ripple free. Determine:a. The field current.b. The delay angle of the converter in the armature circuit
A chip design company comes up with a new 4-stage pipelined design to execute instructions such that stage s1 takes 30 ns, s2 takes 30 ns, s3 takes 50 ns and s4 takes 30 ns of processing time.
2) A device that responds to a small current or voltage change by activating a mechanical switch allowing a larger amount of current flow is 3) Where does a program transfer to when an interrupt occurs Interrupt vector table Interrupt service ro..
ts diode acts as a constant 1.0 V drop. the input voltage is 12.0 V. tje ;pad os a 4 ohm resistor. what is the highest possible output voltage magnitude, and at what value duty ratio does it occur
Design the simplest circuit that has three inputs, X1,X2, and X3, which produces an output value of 1 whenever exactly one or two of the input variables have the value 1; otherwise, the output has to be 0.
a DC series machine ( 9.25 kW, 185 V, 1500 RPM) has Ra+Rsr = .3 ohms. The data for the magnetization curve are: Ia 0 10 20 30 40 50 60 Ea 10 50 106 156 184 200 208 Determine the terminal voltage at Ia = 20 amps, 40 amps and 60 amps.
The signal given is x(t) =cos(440*2*pi*t) +cos(554*2*pi*t)+cos(659*2*pi*t) Find the complex exponential forier series of the signal and plot k vs Ck for k=-1000 to 1000.
You are hired to design the front end of an imaging system for studying the boundary shapes of cells, bacteria, viruses, and protein.The front end consists, in this case, of the illumination source(s) and corresponding imaging camera(s).
many cell phone battery chargers operate on 2.4 volts, while others operate on 3.0 volts. The cell phone battery charger in use for this project is 2.4 volts , but it is broken and cannot charger the battery . you do, however , have available a 3...
a) Draw the phasor diagram for V1, V2 and V3. b) Find out the value of V1+V2-V3 and draw the phasor diagram for it. c) If the frequency of all signals is 60Hz, then what is the angular position V1 and v2 and v3 at 10th second
Ib is 15uA in a circuit where an NPN transistor has an Av of 75 and VCE is 10 when Vcc is 25 and Beda DC is 75 and the Ic is 1.125mA, What would Rc be, assuming Ve=0
A ball is dropped from a height of 10 feet. Each time it strikes the ground, it bounces up to 80% of the previous height a.What height will the ball bounce to after it strikes the ground for the third time b.How high will it bounce after it strikes ..
The short-circuit current of silicon p+-N solar cell at room temperature is Isc ≈Iph = 100mA. The technological parameters of the cell are Area A = 4 cm2, ND=5*1016cm-3, μp=380cm2/V.s, Lp=10μm, and ideality factor n≈1.
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