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a full wave center-tapped transformer rectifier in a power supply provides an average dc output voltage of 14 v on which a maximumripple of +,-0.5 volt is allowed.Diodes have a 0.7 volt drop when co
(A) What is the current flow of a circuit containing inductances of 1-H and 2-H connected in series to a 440 V 60 Hz source (B) What would the total circuit current flow be if the same two coils were
(A) A 6-H and 4-H coil are connected in series. What is thevalue of the total inductance (B) What is the value of thetotal inductance when the same two coils are connected inparallel
Realize the function f(a,b,c,d,e) = Σm(6,7,9,11,12,13,16,17,18,20,21,23,25,28) using a 16-to-1 MUX with control inputs b,c,d, and e. Each data input should be 0,1,a, or a'. Hint: Start with a
find the value of x that is required for nulling the output offset voltage that results from Q1 having an area 10%larger than that of Q2.
A preamplifier is needed to interface this sensor with a variety of laboratory instruments. The output of the preamp must be 1V when the sensor is immersed in a test solution with pH=4 and 1.75V whe
Determine the impulse resonpse of the Fourier Transform for a moving average filter which produces the average value of the present and previous nine samples of a signal, i.e. averaged over ten samp
A tank containing 6000L of water drains out in 30 min. The volume Vof water in the tank after t min of draining isV=6000(1-t/30)2. Find the instantaneous time rate of change of V after 15 min draining
The time t required to test a computer memory unit is directly proportional to the square of the number n of memory cells in the unit. For particular type of unit, n= 6400 for t= 25.0s. Find the in
If the first inverter in the chain has an input capacitance of 20fF and the off chip load is 10 pF, how many inverters should be used to drive the load with the least delay Estimate the delay, expre
Consider the noise level table included in page 2 and thedesign equations included in pages 3 and 4 for circular and square membranes. Consider the radiusof the circular membranes limited to values
a single phase transformer has the following ratings: 10kVA,240/2400V. In the open circuit test with rated primary voltage(240V), the primary current is 0.85A and secondary voltage is2400V. A short
A 20-V-rms 60-Hz ac source is in series with an ideal diodeand a 100 Ω resistance. Determine the peak current and peak inverse voltage for the diode.
An infinitely long cylindrical shell extending between r = 1m and r= 3 m contains a uniform charge density ρv0 .Apply Gauss's law to find D in all regions.
A 1000KVA transformer is at full load with a 0.5 lagging powerfactor. If the line voltage is 500 volts at 60Hz. Find the New Volt-Ampere quanties needed to improve the power factor to 0.95 by adding
A 1000KVA transformer is at full load with a 0.5 laggingpower factor. If the line voltage is 500 volts at 60Hz. Find the following quanties needed to improve the power factor to 0.95 byadding capaci
A separately excited DC generator,when running at 1200 RPM, supplies 200A at 125V to a circuit ofconstant resistance. What will the current be when the speed is reduced to 1000 RPM if the field curr
A 75 kW, 8 pole star connected induction motor operates froma 415 V, 50 Hz supply and draws 140 A when supplying full load.Determine: 1. the synchronous speed Ns;
based upon the Norton thevenin equivalentcircuits (Method of short circuit through nodal analysis) When there is a short circuit present, any resistor in parallel will not have current running through
Voltage and current measurement taken for a 3- phase Wye- connected alternator indicate a line voltage of 208 V and a line current of 20 A. What is the value of the phase voltage and phase current
1- Describe how the MOSFET acts as a switch. What could bedone to make the MOSFET ON when the square wave is negative and OFF when the square is positive 2- How is the magnitude of the control volta
1- Name a few computer operating systems. 2- What is the full form for MS-DOS 3- What is the difference between a logical address and aphysical address
When the motor runs at 1710 rpm, the line currentdrawn from the supply is 78 A at 0.85 PF lagging. Given that,stator iron loss is 2kW, windage and friction losses are 1.2kW andresistance between two
a. calculate n and p using theexact solutions found above at T = 200K, 300K, 500K and 700K. b. calculate n and p using theapproximate solutions given in the lecture at T = 200K, 300K, 500K,and 700K. c
The rectifier outputvoltage ripple factor must not exceed 5%. In your design, assumethe voltage variation during discharging period is linear and theoutput voltage ripple frequency is twice the sour