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Reference the textbook problem 6.12. Design a system using the photoconductive cell in Figure 6.9 to measure and display light intensity. Make the design such that 20 to 100 mW/cm2 produces an output of .2 to 1.0 V. What is the readout error when the intensity is 60 mW/cm2?
If 3.0 V are across the resistor, compute: a) the current in the inductor b) the inductive reactance XL c) the voltage across the inductor Vl d) the source voltage Vs e) the phase angle between Vr and Vs
Consider a balanced three-phase system where the sources areconnected in a wye formation and the load is connected in a wyeformation with impedance ZPY for each phase. The"a" phase source voltage isVan=220
A 20kW, 250V, self-excited dc shunt generator is driven at its rated speed of 1200rpm and it is delivering rated power at rated terminal voltage. Its armature-circuit resistance is 0.15-ohm, and the field current is 2 A.
The signal generated by a source with 50 ohm impedence is to beattenueated by a factor of 10. The output impedence of the sourcefollowed by the attenuator should also be 50 ohm. Choose values forthe resistive divider.
A spacecraft uses two ground-based computers and one on-board computer to control the thrusters used to make course corrections. There is also a manual override control that will switch control of the thrusters directly to the onboard computer in ..
Digitizing an Audio Signal, PAM, ADC, An audio signal has a bandwidth that extends from 100 Hz to 10 kHz. The signal is sampled to create a PAM signal and then digitized by an analog to digital converter (ADC) that has 8 bits.
Find the power being delivered by a source connected between points A and B if the 4 ohms resistor is dissipating 1W of power.
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.
A stationary conducting loop with an internal resistance of 0.5 Ohm is placed in a time varying magnetic field. When the loop is closed, a current of 5 A flows through it. What will the current be if the loop is opened to create a small gap
A shunt regulator utilizing a zener diode with an incremental resistance of 5ohm is fed through an 82ohm resistor. If the raw supply changes by 1.0V, what is the corresponding change in the regulated output voltage
A STAIRCASE LIGHT IS CONTROLLED BY TWO SWITCHES, ONE AT THE TOP OF THE STAIRS AND THE ANOTHER AT THE BOTTOM OF THE STAIRS. A)MAKE A TRUTH TABLE FOR THIS SYSTEM
an adiabatic throttling process for R-134a takes saturated liquid at 800 kPa entering, and drops the pressure to 280 kPa (constant specific enthalpy). Determine the quality exiting and the specific entropy change for the throttling process.
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