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A ceramic capacitor is to be made so that it has a capacitance of 100 pF and is to be operated from a 750 V supply. Allowing for a safety factor, the dielectric has a strength of 500 kV/m. Determine
(a) the thickness of the ceramic,
(b) the plate area if the relative permittivity of the ceramic is 3.2,
(c) the charge and energy stored when the capacitor is connected to its rated supply voltage, and
(d) the flux density under these conditions.
Using the wiring diagram shown in (Figure 1) , calculate the total power for the three radiators.
By what test on dc reparalely excited generator would you determine the armature reaction equivalent field current at rated armature current.
A voltage of 60cos(4πt) V appears across the terminals of a 3mF capacitor. Calculate the current through the capacitor and the energy stored in it from t=0 to t=0.125 seconds.
The physical head of an impoundment power plant is 100 m. When the penstock is fully closed, the pressure at the outtake end is 106 N/m2.
Assume that the allocated spectrum for a cellular system is 25 MHz in bandwidth,- For cluster sizes N = 3, 4, and 7, compute the maximum number of users per cell, at blocking probability 0.02.
Find the Laplace transform of a rectangular voltage pulse that is 0 V until time 0 s, then jumps to 5 V and stays there until time 2 ms, then returns to 0 V and stays there after time 2 ms. Hint: express the pulse in terms of unit step functions.
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.
A single phase transformer has the following rating: 120 kVA, 2000 V/100 V, 60 Hz with 1000 primary turns. Determine (A) the maximum flux. (B) given a maximum flux density of 0.25 T, the cross-sectional area of the core.
Vehicles can turn right, turn left, or continue straight ahead at a certain intersection. It is hypothesized that half the vehicles entering this intersection will continue straight ahead.
DESIGN A mod 6 counter that counts in the natural sequence. DO NOT include the undesired states in your design (therefore, you will have don't care condition ). show all steps for the complete design of this synchronous counter
What is the out put voltage of an op amp circut if it has an ambient temperature of 50 degrees celcius and the thermistor Rt resistance is 810 ohms, The voltage in is positive 5 VDC and the only other resistort is 1000 ohms
3)what is its frequency content 4) The 1D rect function has a width of 1; i.e. has a non-zero value between +1/2 and -1/2. What is the width of the delta function 5) What is the area of the delta function
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