Electrical Engineering Answers

A piezoelectric accelerometer has the following properties and inputs:

Axial acceleration = 10 g’s

Transverse acceleration = 3 g’s

Transverse sensitivity = 4%

What is the magnitude of the acceleration in g’s that the accelerometer measures in the axial direction?

Find the maximum of the function f = −2x5 +4.2x4 +2x3

- x

2 +20x − 5 in the range −8 ≤ x ≤ 

10 using the Particle Swarm Optimization method. Use 4 particles with the initial positions 

x1 = −2, x2 = 0, x3 = 1, and x4 = 3.

Simulate a single-phase AC voltage controller and plot its voltage and current waveforms

using coding in the command window. The plot should be of minimum 300 dpi clarity.

Also include the FFT harmonic spectra of the current.

Simulate using MATLAB a single phase full bridge inverter driving an inductive load.

Represent the results appropriately in graphical form with detailed analysis and insights

into the results obtained. Also included in the results, normalized FFT of the inverter

output current.

Find the maximum of the function f = −2x5 +4.2x4 +2x3 - x

2 +20x − 5 in the range −8 ≤ x ≤ 

10 using the Particle Swarm Optimization method. Use 4 particles with the initial 

positions x1 = −2, x2 = 0, x3 = 1, and x4 = 3. Solve the numerical using MATLAB coding 

for 2 iterations.

Compute the total resistance of you to following the procedure in the resistance measurement using the ohmmeter and color coding chart compare the reading very (measured value)with the color-coded value

If two events, A and B, are such that P(A) = .5, P(B) = .3, and P(AnB) = 1, find

the following

a. P(A|B)

b. P(B|A)

c. P(A|A UB)

d. P(A|ANB)

e. P(ANB|AUB)

Consider the following events in the toss of a single die: A: Observe an odd number,

B: Observe an even number. C: Observe a l or 2.

a. Are A and B independent events?

b. Are A and C independent events?

The following information is given in connection with the parallel series circuit of Fig 3.4b:E = 48, R1 = 6, R2 = 12, R3 = 3, R4 = 15, R5 = 90, R6 = 30. Calculate (a) the total equivalent resistance of the entire circuit, (b) the total current, (c) the voltage drop across each section, (d) the current through each resistor, (e) the total power taken by the entire circuit. Rs R2 .Ro (6) Parallel-series circuit

The no-load voltage of a single phase transformer is 3300 / 400 V. It takes 7A at a power factor of 0.3 lagging on no-load. Determine the following: 

(a) The magnetizing current of the transformer.

(b) The magnetizing reactance of the transformer.

(c) The core loss current of the transformer.

(d) The core loss resistance of the transformer

(e) The iron losses of the transformer.

(f) The primary current if the load on the secondary is 80 A at a power factor of 0.85 leading.