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1. Consider the following voltage wave V(t) = 170 + cos(377)t volts what's the RMS value of this wave?2. What voltage will a DC voltmeter read if connected to an ideal voltage generator with the voltage of V(t) = 170 + cos(377)t.3. Consider the equation 0.5t = sin(t) what type of equation is this?
A 500V shunt dc motor has a nominal armature current of 40A, and operates at 1200 rpm. if the armature resistance is 0.25 (ohm), calculate The valve of a starting resistor limiting the initial armature current to 60A
design a combinational circuit that has four inputs (ABCD) and one output(Z). The output equals one when the Gray coded number represented by ABCD is less than five. Reduce the function using SOP or POS forms and then partially factor if possible.
An npn BJT has an emitter area of 2micrometer^2. The doping concentration in the base is Nb=3x10^16/cm^3. The BJT is operating with Vt=26mV and ni=1.5x10^10/cm^3. For electrons diffusing thru the base Dn=34cm^2/s.
A 10 kVA transformer has an iron loss of 250 watts and a half-load copper loss of 80 watts. Determine the full-load efficiency at 0.8 power factor.
An amplifier is to have an input of 100watts. Its effeciency is 75%, what is the maximum ambient temperature wherein this amplifier may be placed with a maximum junction temperature of 200degC and a junction to case thermal resistance.
An altimeter can measure 0-100m; using a signal conditioner, this high position is distributed over a voltage range of 0-5V. If an ADC covering the same voltage range outputs 1000 0000, what is the distance measured
Design (determine) the metallurgical channel thickness of an n-channel silicon JFET such that the pinch off voltage is -3.0V. The doping parameters are NA=3x1018cm-3 and Nd=2x101616 cm-3.
Efficiency in a power transformer is 98.6% when loaded such that its core losses equal the copper losses. Calculate the per unit resistance of this transformer.
A relay coil is connected to a 210-V, 50-Hz supply. If it has a resistance of 30 ohms and an inductor of 0.5 H: 1. The apparent power to the nearest VA is 2. The power factor to the nearest hundredth is
A full adder is a circuit which adds three bits X, Y, Z together and returns two bits C and S to represent the total as a 2-bit binary number C S. C is the MSB and S is the LSB. For example, if X=1, Y=1, Z=0, the total should be 2, or 102 in binar..
An odd parity circuit with 2^n inputs can be built with 2^n-1 XOR gates. Describe two different structures for this circuit, one of which gives minimum worst-case input to output propagation delay and the other of which gives a maximum.
If a computing system needs two 32Kbytes to store its program and 16Kbytes to store temporary data, will a 16-bit address bus sufficient
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