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If the current through and voltage across an element are I = 8 sin(ωt + 40°) and v = 48 sin(ωt + 40°), respectively, compute the power by I2R, (VmIm/2) cos θ, and VI cos θ, and compare answers.
A 1000-W iron is left on the ironing board with its base exposed to the air at 20°C. The convection heat transfer coefficient between the base surface and the surrounding air is 35 W/m2 ?c °C. If the base has an emissivity of 0.6 and a surface are..
Design a sequential circuit that receives a 50% duty cycle clock offrequency f and outputs a clock signal of frequency f/7. (Note: theoutput does not have a 50% duty cycle.) Provide a complete schematic.
(1) check a diode out with a regular ohm meter (2) Give an example of where a half wave, full wave or bridge rectifier is used. (3) What sizes of transformers are used for power lines
Design a 2-bit counter that, when f = 1, counts in the repeating sequence: 0, 2, 3, and when f = 0, counts in the reverse direction. Use T flip-flops. (a) Construct a state diagram or state table.
a second instrument is required to measure the input signals up to 100Mz with an amplitude inaccuracy of less than 1% calculate the natural frequency requirements, if the damping retios are 0.3 and 0.6 respectively.
From the definition of polarization (p) Perrin equation, and anisstropy (r) introduced by Jablonski, derive the interchangeable relation between p and r.
Design a noninverting amplifier with gain of 20. Maxium opamp output current of 0.5 mA should occur for maximum outputvoltage of 8 V.
An LVDT with associated signal conditioning will be used to measure work-piece motion from -20 to +20 cm. The static transfer function is 2.5 mV/mm. The output will be interfaced to a computer via an ADC.
The voltage across the load must remain between 4.7 and 5.0 V for all values of load current. Design a voltage-divider network to supply the load. You may assume that resistors of any value desired are available.
A project manager placed an order for ball bearings for some heavy duty manufacturing machinery. What is the surface area in square millimeters of one of these bearnings if it has a diameter of 0.4 inches
The photoelectric threshold wavelength for Tungsten is 2300 Å. Find the energy in eV of the emitted electrons from the surface by ultraviolet light of wavelength 1800 Å.
A 10kW, 230V, 50 Hz, three-phase induction motor has full-loadefficiency of 86%, and power factor of 88%. It is supplied by a three-core cable 100mlong, having conductors of cross sectional area 16 mm^2 andresistivity 17.2nΩ m.
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