EES 512 Final: EES512 - Fall 2014 Final V2

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turquoisegnu128

31 Jan 2019

School

Ryerson University

Department

Electrical Engineering

Course

EES 512

Professor

All

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Document Summary

For the mesh current shown in the circuit shown in figure-1: write the mesh current equations. Solve the mesh currents: calculate the voltage vx across the current source. Q2: the switch in the circuit shown in figure-2 was closed for a long time. Calculate (i) (ii) (iii) il(0+) and il((cid:146)) il(t) for t (cid:149) 0. Sketch il(t) from t = 0- to t = (cid:146). Q3: (i) write node voltage equations of the circuit shown in figure-3. (ii) solve the node voltages. (iii) Q4: for the circuit shown in figure-4, calculate (i) (ii) (iii) The power factor of the power supplied by source vs1 and the power supplied to the circuit by this source. Calculate the power dissipation in the 1(cid:525) resistance, and draw the phasor diagram of i2 and v2. Q5: (i) calculate the thevenin s equivalent circuit (vth and zth ) at the load terminals a-b, 12 as shown in the circuit in figure-5.

Related Questions

Question 1

A simple Zener diode shunt voltage regulator is to supply 12 V to a load which normally draws a load current which varies from 0 to 50 mA. The input voltage varies between 15 V and 18 V.

1.1 Calculate the maximum rated current value of a Zener device to be used.

1.2 Calculate the minimum power for the Zener that could be used safely.

1.3 If a 5 W rated Zener were to be used, calculate the range of possible RS. values and hence suggest a suitable standard E12 resistor value.

1.4 State four (4) conditions under which a Zener diode dissipates minimum power in a regulator circuit.

Question 2 (IEIIQ15)

A 2.5 W Zener diode is used in a simple Zener shunt voltage-regulator to supply 5.1 V to a load which normally draws a load current varying from 0 to 125 mA. The input voltage varies between 8 V and 9.5 V

2.1 Give two (2) reasons for the inclusion of the series resistor in the Zener-regulator circuit.

2.2 Calculate the range of series resistance that may safely be used in this circuit.

2.3 Select a single suitable standard E12 resistor value and give its colour code with 1 % tolerance.

maponyamall30

3.3 An American First

Written by Harriet Beecher Stowe, this American novel was the first to sell over one million copies. What was its title?

To answer the question, correct the sentences below by replacing each underlined word with its antonym. Choose your answers from the words after the sentences. Write the letter of each answer in the space above its sentence number at the bottom of the page. You will need to divide the letters into words. Some letters are provided.

1. The use of robots has made the manufacturing process more wasteful.

2. A con artist can convince a skeptical person to buy just about anything.

3. The champions were a weak football team.

4. Being an experience chess player, the next move was uncertain to James.

5. Lindsay was sure that the cost for the modest party was excessive.

6. The events of the enjoyable story built to a confused conclusion.

7. After wearing a suit to work all week, Sean likes to wear formal clothes during the weekend.

Please refer to the second page attached for the antonym words.