With appropriate sketching and with your own words, explain the relationship between damping ratio and system response.
In: Electrical Engineering
Show that the diffusion current of a forward-conduction pn junction is a strong function of temperature.
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What is AN4 pin on BAYSYS 3 board? i know there is AN0-AN3. I cannot locate the pin and function of AN4
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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?
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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)
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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.
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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.
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Describe the steady-state solution of Markov chains and the state probabilities:
(Typed answer only .no hand written):
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Automotive charging systems, Automotive starting systems (Canvas). Draw and label a starting and charging circuit.
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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?)
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ANSWER ALL QUESTIONS!
Table I: Bulb fixtures information
Given Data |
Required |
||
Watts |
Number of bulbs |
Type of bulb |
CFL light output (lumens) |
40 |
4 |
Bare bulb |
540 |
60 |
6 |
Bare bulb |
1020 |
75 |
2 |
Bare bulb |
1200 |
100 |
3 |
Bare bulb |
1920 |
50 |
3 |
Reflector type bulb |
561 |
60 |
2 |
Reflector type bulb |
840 |
75 |
4 |
Reflector type bulb |
920 |
The bare bulbs and reflector type bulbs are being used for 8 hours and 6 hours respectively every day.
Table II: Efficiency recommendation information
To Replace Incandescent Bulb Rated at |
Necessary Light Output (Lumens) |
Typical CFL Replacement Wattage |
Recommended CFL Lumens per Watt (lpW) |
Bare Bulbs |
|||
40 watts |
495 or more |
11 - 14 watts |
45 |
60 watts |
900 or more |
15 - 19 watts |
60 |
75 watts |
1200 or more |
20 - 25 watts |
60 |
100 watts |
1750 or more |
>29 watts |
60 |
Reflector Type Bulbs |
|||
50 watts |
550 or more |
17 - 19 watts |
33 |
60 watts |
675 or more |
20 - 21 watts |
40 |
75 watts |
875 or more |
>22 watts |
40 |
The house owner requires answers for questions 1 to 4 before he/she takes a decision.
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)
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(a)Discuss the classification of logic families and
their characteristic parameters.
(b) Design q mod -6 unit distance code counter using D flip
flop.
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True or False
The practice of engineering is regulated by the federal government
Some forms of hearsay evidence are admissible.
A voidable contract is not a contract.
If there is unjust enrichment involved in a contract with a corporation the courts may establish a quasi-contract to effect a remedy.
The corporate veil affords complete protection for stockholders.
The offeror has the right to revoke the offer at any time
A false representation of a material fact is all that is needed to prove fraud
In general any preexisting duty is also sufficient consideration to support a contract.
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3. Draw and explain the working principle of successive approximatin DVM digital voltmeter approach if used to measure dc voltage of 11.5 volts! Make a time diagram
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