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Who oversees the working condition of airline baggage handlers?
A 50 Hz, 440 V, 3-phase , 4-pole induction motor develops half the rated torque at 1490 r.p.m. with the applied voltage magnitude remaining at the rated value, what should be its frequency if the motor has to develop the same torque at 1550 r.p.m.
An aluminum cylindrical strain gage load cell is to be specified tomeasure a force of 100,000lbs. The maximum stress in the metal isto be 20,000 psi, the modulus of elasticity is 9.5 x 106psi, and Poisson' ratio is 0.33.
Design a unity gain first order lowpass digital filter with a 3dB point at Fc=100Hz using Bilinear Transformation. The sampling rate is 1kHz. A first order analog filter is given by Ha(s)=θc/(s+θc) (a) What is the 3-dB frequency of the above analog ..
Use as many components as you can to to minimize adders delay. Show the entire Divide and Conquer Tree in which it is clear for each break up node in the tree, whether the stitch-up is a "wake" up or "speculation"
a) Construct a choice table for interest rates from 0% to 100%. b) Which roof should you choose if your MARR is 12% what is the actual value of the IRR on the incremental cost?
the donor energy level is approximately 0.1 ev below the conduction band. the approximate value is calculated from the binding energy equation from hydrogen. derive the binding or ionization energy which is equal to the total energy.
Traffic lights are being converted from incandescent bulbs to LED arrays to save operating and maintenance costs. Typically each incandescent light uses three 100-W bulbs, one for each color R,Y,G,A competing LED array consists of 61 LEDs.
Calculate the following. a) What is the magnitude of the voltage in a wall socket if the effective voltage is 240 Vrms b) What is the magnitude of the current if the effective current is 360 mArms
The resistance is .4 ohm for each transmission wire connecting the motor source. If the motor was operating at 100% pf and eff and the cost of electrical power was $.10/kWh, how much can be saved each year if the motor was wired to the 240.
A proportional control system is to be used to control the wing flap of a jet airplane. The wind load is expected to cause as much as 600 in-lb of torque. The system should be able to keep the flaps with 5o of the set point.
The ratio of stator to rotor turn is 1.8. The full load slip is 2%. Calculate for this load the torque developed torque and the horse power . Find also the maximum torque and the speed at maximum torque . Neglect stator impedance.
The dielectric constant of one mediumis 1.25 if the permeability of each medium is the same as that offree space and the reflection coefficient is 0.25 determine thedielectric constant of the other medium
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