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Application: Electrostatic precipitator. An electrostatic precipitator is made by lining the interior of a smoke stack with two half-shells as shown in cross section in Figure 5.54. Assume the stack is very long and a potential difference of 100 kV is connected as shown. Calculate:
(a) The potential inside and outside the stack.
(b) The electric field intensity inside and outside the stack.
If the motor is driving a load whose torque requirement remains constant at 3Nm, independent of speed. Calculate the armature voltage Va to be applied in steady state, if the load to be driven at 1500RPM.
Design a full-wave bridge rectifier circuit to deliver 10 volts de with less than 0.1 volt (pp) ripple into a load draWing up to 10mA. Choose the appropriate ac input voltage. assuming 0.6 volt diode drops.
Consider a circuit consisting of a sinusoidal source V s (t) = cos (t) u (t) volts connected in series to a resistor R and an inductor L and assume they have been connected for a very long time. Let r = 0Ohm and L = 1 H.
The binary-coded-decimal (BCD) format uses 4 bits to represent 10 decimal digits. For example, 259 in base 10 is repesented as "010 0101 101" in BCD format. A BCD incrementor adds 1 to a number in BCD format.
A 100 Hz electromagnetic wave is propagating down into the sea water with an electric field intensity of |E| = 1 V /m just beneath the sea surface. What is the time-average Poynting power density at a depth of 100 m
A micrometer caliper is used to measure the diameter of a bolt and a reading of 0.768 inches is obtained. Based on this measurement, find the smallest possible diameter and the largest possible diameter.
An ideal p-n junction diode is reverse biased with a voltage of 30 mV. If the reverse current at this voltage is 1 pA and the area of the diode is 100 µm x 100 µm, what is the reverse saturation current density, JS
a binary transmission channel introduces bit errors with probability 0.15.estimate the probability that there are 20
Thre identical impedances are connected to a 3 phase, 415 V, 50Hz Y connected supply, the load draws 21kW at a power factor of 0.82 lagging. Draw all possible wiring arrangements for the load connected to the Y-connected supply.
A base stationcellular communicationsystems lossless antenna has a maximum gain of 16 dB (above isotropic) at 1,900 MHz. Assuming the input power to the antenna is 8 watts, what is the maximum radiated power density (in watts/cm^2)
The motor drives a load that requires constant torque. Assume that RA = 0. The resistances in the field circuit are RF = 50Ω and Radj = 25Ω. Find a new value for Radj so that the speed becomes 1200 rpm. What is the slowest speed that can be achiev..
What regions in the cerebral cortex are known to be involved in movement? How do these areas contribute to the production of motor behavior?
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