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The CVPI design was essentially a retrofit of an existing civilian design for police use. What level of redesign should have been done in this case? What does this say about other situations where existing designs are scaled up or otherwise adapted to a new use?
Switch is closed at t=0 s. Since the circuit has no resistance, capacitor charges instantly, find energy stored in the capacitor at t=0s.
a)Determine I, VR, and Vc in phasor form. b)Calculate the total power factor, and indicate whether it is leading or lagging. c)Calculate the average power delivered to the circuit. d)Draw the impedance diagram e)draw the phasor diagram of the voltage..
In a bus 1-persistence CSMA/CD with Tp=50us and Tfr=120us, there are two stations, A and B. Both stations start sending frames to each other at the same time. Since the frames collide, each station tries to retransmit.
What is the approximate value of the voltage gain of an emitter follower Why may such a circuit be useful What are the values of input and output impedances of the emitter follower you expect to measure
A 400/100 V, 10 kVA, 2-winding transformer is to be employed as an autotransformer to supply a 400 V circuit from a 500 V source. When tested as a 2-winding transformer at rated load, 0.85 pf lagging, its efficiency is 0.97%.
Calculate the standard enthalpy change for the reaction of an aqueous solution of barium hydroxide, Ba(OH)2, with an aqueous solution of ammonium nitrate, NH4NO3, at 25°C. The complete ionic equation is
Each phase of the load consists of an impedance of 30 + j40 *. Find the linetoneutral voltage phasors, the line-to-line voltage phasors, the line-current phasors, the power, and the reactive power delivered to the load.
The transformer is operating in the step-down mode. Sketch the appropriate equivalent circuit and determine (a) the equivalent low-side parameters; (b)the no-load voltage; (c)the voltage regulation at 0.82 power-factor lagging.
What is the magnitude of the angular momentum of the system taking the center of the rod as the origin? Treat the masses on the ends as point masses.The answer is in kg*m^2/s.
Find the line currents and the total complex power delivered to the load.- Assume VAB to be 230 ∠ 0° V and the phase sequence to be positive.
Find the transition points for the p-channel and n-channel transistors. - Sketch the voltage transfer characteristics including the appropriate voltage values at the transition points.
A common energy consumption for a family is about 1000 kW hr / month. How much power would that be on the average. (Hint: Notice that hour and month are both units of time so kW hr per month is really a power unit.
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