Electrical Engineering Answers

Simplify the following boolean function, using four-variable maps:

F(A, B, C, D) =  Σ(0, 2, 4, 5, 6, 7, 8, 10,

13, 15)

Simplify the following boolean function, using karnaugh maps:

F(w, x, y, z) =  Σ(2, 3, 12, 13, 14, 15)

Simplify the following boolean function, using three-variable maps:

F(x, y, z) =  Σ(1, 4, 5, 6, 7)

Simplify the following boolean function, using three-variable maps:

F(x, y, z) =  Σ (1, 3, 5, 7)

A villager in South Africa has an inhabitant of five hundred people. It is 200 km from the nearest Eskom substation based on line of sight. Presently, the only source of electric power in the village is diesel generator. Due to Covid-19, the company that used to maintain the generator has folded up, consequently, the villagers have no electricity. Design a standalone (off grid) Photovoltaic (PV) system with special reference to the village in South Africa with the 8 PV panel generation factors: 

XXX company requires an impulse generator with a maximum charging voltage of 120 kV. As a technologist, you are requested to design an n stage impulse generator that will have a maximum charging voltage of 120 kV with each condenser rated at 125 kV.. You are requested to provide the following for your design: 1. The number of stages for the impulse generator ˆ 8 ≤ n ≤ 10 The selection of the number of stages should be scientifically motivated. 2. Rated capacitance of each condenser. 3. Maximum output voltage 4. Simulations of the impulse generator for at-least 10 seconds. You are also require to provide simulations for 5 % and 10 % deviation of the test specimen’s rated capacitance. 5. Detailed report During engagements with hte company, it is further established that the capacitance of the test specimen is 1000pF. The

An op-amp with slew rate 6 V/μs and gain of 20 dB. If this amplifier must faithfully amplify sinusoidal signal from dc to 120 KHz without introducing any slew rate induced distortion, then the input signal level must not exceed

A cast steel frame is to be used as the core of an inductor.

an 800 turn coil is wound on the Centre limb of the frame which has two similar outer in parallel with each other

the frame has the following parameters

outer limb c. S. A. Of 2000 mm and length of 700mm

centre limb C. S. A. Of 4000 mm and length of 250 mm