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Magnetic circuit of shape of ring has a mean air gap length g = 1mm. The area of the core and air gap can be assumed to be the same and fringing is negligible. The cross-sectional area is 1cm^2
Coil one has 100 turns and coil two has 100 turns. The material has infinite permeability.
Determine the range of DC current that can be applied to coil 2 without saturating the core when coil 1 has a steady 10A DC current in the direction that makes the flux flow CW on the ring . The Current at coil 2 has the same direction as the current of coil 1. Assume saturation occurs at a flux density of 1.7 T
Shuffle a deck of cards and pick two cards at random. Observe the sequence of the two cards in the order in which they were chosen. (a) How many outcomes are in the sample space (b) How many outcomes are in the event that the two cards are the same ..
The magnitude of the acceleration of the block is 1.93 m/s^2 (a) Find the coefficient of kinetic friction between block and plane? I got 0.393 but it is wrong. (b) Find the speed of the block after it has slid 1.90 m
As a project manager on a product development team for a fast responding digital thermometer useable in high temperature applications (degrees C), you are asked to create a product development plan that addresses items
A series connected DC motor has R_F + R_A = 11.5 ohm and draws 1 A of current from a DC voltage source with V_T = 18 V while running at 1000 rpm. What is the speed and developed torque when drawing 0.75 A of current
Design a series controller (a PD, PI or PID) so that the following performance specifications are satisfied. Steady-state error due to a step input = 0
A soccer player kicks a soccer ball of mass 0.45 kg that is initially at rest. The player's foot is in contact with the ball for 1.1 x 10-3 s, and the force of the kick is given by F(t) = [(6.1 x 105)t - (2.3 x 108)t2] N for 0 t 1.1 x 10-3s, where ..
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
Design a load resistor (resistance rating and power rating) network to have the transformer operate at full load. Design a second network for half load. You may need to combine several resistors to get the desired value.
An ADSL signal uses 250 channels, each of 4 kHz bandwidth. Assume the maximum signaling rate to be 1 symbol/Hz. QAM is used within each channel with up to 64 point constellations. What is the bit rate/channel
Racecar A is traveling on a straight portion of the track while racecar B is traveling on a circular portion of the track. At the instant shown, the speed of A is increasing at the rate of 10 m/s2, and the speed of B is decreasing at the rate of 6..
Suppose that the amount of a weekly bill of all households is distributed with a mean of $140 and standard deviation of $35. Let X var be the average amount of bill of a random sample of 49 households selected.
The penalty for main memory access is 100 clock periods for both data and instructions. The probability of an instruction cache miss is 2%. The probability of a data cache read miss is 5%. The data cache has a write-back
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