Search & Filtering
Two impedances Z1 and Z2 are connected in parallel. The first branch takes a leading current of 16 A and has a resistance of 5 Ω, while the second branch takes a lagging current at 0.8pf. The applied voltage is 100+j200 V and the total power is 5 kW. Find branch impedances, total circuit impedance, branch currents and total circuit current.
Two coils A and B are connected in series across a 110V, 60Hz supply. The resistance of coil A is 2 and inductance of coil B is 0.004H. If the input from the supply is 2.4kW and 1.8kVAR, find the inductance of coil A and resistance of coil B. Also calculate the voltage across each coil.
A parallel plate capacitor has an area of 5.00 cm2 and a capacitance of 3.50 pF. The capacitor is connected to a 12.0 V battery. After the capacitor is completely charged up, the battery is removed
a. What must be the separation of the plates and how much energy is stored in the electric field between the plates?
b. If a sheet of Mica with εr=3.5 is placed between the plates, how will the voltage across the plates and the charge density on the plates change?
c. If the sheet of Mica has an area of 3.00 cm 2 so that it does not cover the whole area of the plates, what would be the effective capacitance of this arrangement?
d. If the Mica sheet is removed and the plates are moved 1.00 mm farther from each other, what will be the voltage between the plates, and how much work will it take to move the plates apart?
Let V = 40 V, I =3A, R1 = 10 Ω, R2 = 40 Ω, R3 = 20 Ω
Obtain Vo in the circuit of Fig. 3 using source transformation
Using superposition, find Vx in the circuit of Fig. 02
Using superposition, find Vo in the circuit Fig. 1
Draw the phasor diagram and find the sum of the currents: i1=141.42 Sin(t + /2) , i2
= -70.71 Cos t , i3= 50 ej/3 , i4=100 -2/3 and i5= 50 (Cos /3 + j Sin/3
Suppose you had reduced a 32-variable Boolean expression using Quine–McCluskey algorithm to a 12-variable expression. For the generated simplified expression, you are required to implement it into a digital logic circuit. You can only use Programmable Array Logic (PAL) or Programmable Logic Array (PLA) devices.
Assume that we had selected a Programmable Array Logic (PAL) and a Programmable Logic Array (PLA) for you to choose between.
1. Using TICPAL22V10Z-25C (Programmable Array Logic)
2. Using PLUS173–10 (Programmable Logic Array).
Your selections among stated PLA and PAL must consider the following constraints:
• Complexity
• Flexibility
• Speed
• Functionality
• Cost
A pre-doped n-type Silicon sample with doping density 1016cm-3
is further heat
treated in a diffusion furnace under phosphine atmosphere to increase the doping
density to 1019
cm-3
. By what factor its conductivity and mobility should improve
