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1. The rotating magnetic field of a two-pole motor travels 360 electrical degrees. How many mechanical degrees does the rotor travel?
2. How can two speeds be obtained from a one-winding motor?
3. What will happen if terminals T5 and T6 in Figure 32-3 are interchanged on high speed?
Example 9.4 A thin ferrite rod with 4π Ms = 800 G is magnetically biased along its axis. Find the external bias field strength required to produce a gyromagnetic resonance at 2.52 GHz.
Compute the moment of force around the pivot point for the lever shown in Figure. You'll need to use trigonometry to determine the x and y components of both the position vector and the force vector. Recall that the moment of force can be calcula..
The R2= 6 homs load in the circuit is absorbing four times as much average power as the R1 = 20 ohmsohms load. The two loads are matched to the sinusoidal source that has an internal impedance of 500 (angle) 0 1)What is the numerical value of a1
The following data were obtained or a 30-kva, 60 hz, 2400-240V transformer tested at 60hz. Voltage (V), Current(A), Power(W) O.C. Test 240V, 3.0 A, 230 W S.C. Tes..
The output is to be at logic 0 unless an input sequence 0010 is received (e.g., if the input sequence is 0100100100, the output sequence will be 0000001001). Construct a minimum row state table for a circuit.
Suppose we want to construct a parallel plate capacitor of C= 1[F] using square plates. (a)If the dielectric is air (Xr= 1), and the plates are separated by 1 cm, what dimensions will the plates have
Prove the same result using the formula inside the back cover for ∇2 in spherical polar coordinates. (Obviously, this second proof is much simpler, but the hard work is hidden in the derivation of the formula for ∇2.)
What is meant by complete specialization? by incomplete specialization? Why do both nations gain from trade in the first instance but only the small nation in the second?
A 10 kW laser beam pointing at the ship is turned on at t=0. What speed the ship will attain in 1 day assuming that the surface of the ship is perfectly reflective and perpendicular tot the beam.
It is heated to 2500 degrees Celsius in an environment with a temperature of 25 degrees Celsius.
Drift velocity the actual (physical) velocity of electrons along the wire. Transmission velocity the rate at which information can be transmitted electronically using conducing wires. How is it possible that the transmission velocity is so much faste..
A three-phase generator is producing power for a balanced load. Each phase provides a voltage of 690 V and a current of 1000 A. The angle between the voltage and current in each phase is 20°. What is the total real power and reactive power produce..
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