6 The single-phase half-wave ac voltage controller in Figure 11.1a has a resistive load of R = 2.5 Ω and the input voltage is Vs = 208 V (rms), 60 Hz. If the desired output power is Po = 2 kW, calculate (a) the delay angle α and (b) the input PF.

Let a filamentary current of 5 mA be directed from infinity to the origin on the positive z axis and then back out to infinity on the positive x axis. Find H at P(0,1,0).

With appropriate sketching and with your own words, explain the relationship between damping ratio and system response.

Show that the diffusion current of a forward-conduction pn junction is a strong function of temperature.

What is AN4 pin on BAYSYS 3 board? i know there is AN0-AN3. I cannot locate the pin and function of AN4

What are some typical applications for stepper motors and what do engineers do to make sure the rotating shaft is at a particular position even though it is operated in an open-loop system?

Given the complementary solution and the differential equation, Give the particular and the total solution for the initial conditions.

Use C1 and C2 for the weights, where C1 is associated with the root with smaller magnitude. If the roots are complex, the complementary solution is the weighted sum of complex conjugate exponentials, which can be written as a constant times a decaying exponential times a cosine with phase. Use C1 for the constant and Phi for the phase. (Note: Some equations in the text give the constant multiplying the decaying exponential as 2C1. This was done for the derivation. The constant for this problem should be C1 alone.)

(basically anything with a sin function will be marked as wrong by me)

y(0)=7 y'(0)=2   

Given the differential equation y′′+8y′+25y=2cos(1t+1.0472)u(t).

Complementary:(e^(-4*t)*(C1*cos(3*t+Phi)))*u(t)

How to simulate the dynamics of an electric power system, why
needed? On what basis is the time step of the simulation selected? Give examples
phenomena to be simulated, quantities and numerical values ​​used for calculation
methods.

1.Briefly describe the operation of the common mode LC filter of a power supply.

2. Describe briefly with the aid of a diagram, the thermal resistances involved in heat dissipation by a heat sink.

3. Describe briefly the EMI emission and susceptibility issues with Power supplies of medical electronic equipment.

Describe the steady-state solution of Markov chains and the state probabilities:

(Typed answer only .no hand written):

Automotive charging systems, Automotive starting systems (Canvas). Draw and label a starting and charging circuit.

Given a system with the transfer function

p(S)= (s+1)/(s(2s^2+4s+3)(2s+1))

Each section must specify the way of solution / explanation / reasoning
A. 8 points (Is the system in an open circle asymptomatic or BIBO stable or unstable?
B. (8 pts) Closes a control circle with a proportional controller. What is the range of K values for which
The closed circle is stable?
third. 4 points (what is the constant state error of the system in the open circle for step entry
Unit?
D. ) 4 points (what is the error of the constant state of the system in the closed circle with a controller held inside
The domain you found in section b) Select a value as you wish (for a single entry level?)

ANSWER ALL QUESTIONS!

1. A house has following information on bulb fixtures (Table I). The owner of the house wanted to replace all the bulbs fixtures with CFL type. The efficiency information of a typical CFL is given in the Table II and the required CFL light output (in lumens) for each of the replaced bulbs is given in Table I.  

                        Table I: Bulb fixtures information

The bare bulbs and reflector type bulbs are being used for 8 hours and 6 hours respectively every day.    

                      Table II: Efficiency recommendation information

The house owner requires answers for questions 1 to 4 before he/she takes a decision.

1. Using the information given in Question 1, calculate the total annual energy consumption cost for the original fixtures if cost of energy per kWh is $0.08. (1 point)

1. $326
2. $510
3. $894
4. $900

2. Using the information given in Question 1, what is the difference in the annual energy consumption if all of the given bulb fixtures are replaced by typical CFL? The required CFL light output for the replaced bulbs is given in Table I and the CFL bulbs are used the same number of hours as replaced bulb types. (2 points)

1. 1240 kWh
2. 2840 kWh
3. 2926 kWh