ELEKTRONIKAI ALAPISMERETEK ANGOL NYELVEN

ÉRETTSÉGI VIZSGA ● 2013. május 23.

Név: ........................................................... osztály:......

ELEKTRONIKAI ALAPISMERETEK ANGOL NYELVEN KÖZÉPSZINTŰ ÍRÁSBELI VIZSGA 2013. május 23. 8:00 Az írásbeli vizsga időtartama: 180 perc

Pótlapok száma Tisztázati Piszkozati

EMBERI ERŐFORRÁSOK MINISZTÉRIUMA

Elektronikai alapismeretek angol nyelven

középszint — írásbeli vizsga 1211

Elektronikai alapismeretek angol nyelven — középszint

Név: ........................................................... osztály:......

Important information You may use only a pocket calculator which cannot store or display texts, drawing tools, patterns, and rulers as auxiliary tools for solving this written examination. Use a blue-ink pen for writing and a black lead pencil for drawing. When solving simple short questions, use the space below each question. When solving complex questions, use supplementary sheets to be distributed by supervising teachers, after writing your name and class on them. Attach a page number to each supplementary sheet. When solving questions which include calculations, take care to write down relationships (formulas) correctly, do substitutions precisely, and make calculations accurately. If you fail on any of these aspects, points will be deducted from your score. You will be rewarded with the full score for an end-result only when both its amount and its measurement unit are fully correct. When solving questions, take care to produce a neat and well organised written test, use standard symbols, and meet requirements in terms of engineering, format, and aesthetics. If you fail on any of these aspects, points will be deducted from your score. Cross erroneous parts, if any, in your solution by a diagonal line. Within the time frame available for solving the exam, you may also prepare a fair copy. In that case, you will prepare a “Draft copy” and a “Fair copy” by attaching continuous page numbers to the sheets.

írásbeli vizsga 1211

2/8

2013. május 23.


Név: ........................................................... osztály:......

Simple short questions

Maximum score: 40

1.) Determine the current flowing through resistor R3. I1 R1 I3 Data: I1 = 30 mA R3 U R2 R2 = 200 Ω R3 = 300 Ω

(3 points)

I3 = 2.) Determine the DC resistance of a coil. The coil is made from a wire with a diameter d = 0.3 mm, a length l = 20 m, and a specific resistance ρ = 0.0175 Ω·mm2/m. (4 points)

R= 3.) The table below must express the relationship between the plate area and capacitance of a flat plate capacitor. Complete the table. (3 points) A (cm2) C (pF)

2

4

6

8

90

4.) Determine the capacitance of a capacitor with a capacitive reactance of XC = 1 kΩ at a frequency of f = 500 Hz. (3 points) C=

5.) Determine the impedance of the dipole below.

L

R C

Data: XL = 500 Ω

(4 points) R = 300 Ω

XC = 900 Ω

Z= 6.) Determine the effective power of a single-phase AC consumer. Data: U = 230 V, I = 6 A, cos φ = 0.8.

(3 points)

P=


3/8

2013. május 23.


Név: ........................................................... osztály:......

7.) Determine the current through the Zener diode. Data: I = 24 mA, UZ = 6 V, Rl = 1 kΩ. (3 points) I R IZ

U

Z

UZ

Il Rl

IZ =

8.) Determine the value of the collector resistance. Data: Ut = 9 V, UCE0 = 4 V, IC0 = 5 mA. (3 points) +Ut RB1 RC T IC0 RC = UCE0 RB2

9.) Draw a circuit with a voltage amplification of Au = − 4, by using one operational amplifier and three resistors (R1 = 30 kΩ, R2 = 24 kΩ, R3 = 120 kΩ). A neat hand-drawn chart will be sufficient. (4 points)

10.) Determine the current amplification of an amplifier at known voltage amplification (Au), input resistance (Rin), and load resistance (Rl). Data: Au = 50, Rin = 3 kΩ, Rl = 2 kΩ. (4 points) Ai =

11.) Using the algebraic method, simplify the logic function below.

(3 points)

F3 = A ⋅ B ⋅ C + A ⋅ B ⋅ C + A ⋅ C

F3 = 12.) Write down the serial number form of the logic function below. Symbol “A” is used to denote the variable with the highest place value. (3 points)

(

)(

)(

)(

F4 = A + B + C + D ⋅ A + B + C + D ⋅ A + B + C + D ⋅ A + B + C + D

)

F4 =


4/8

2013. május 23.


Név: ........................................................... osztály:......

Complex questions

Maximum score: 60

Question 1

Maximum score: 15

Calculate a DC circuit I I2

U

I1

I3

I4

R1

R3

R4

R2

Data: U = 12 V R1 = 750 Ω R2 = 150 Ω R3 = 1 kΩ R4 = 1.5 kΩ

Tasks: a) Determine the resultant resistance on the generator (R) and the current flowing through it (I). b) Determine the current (I2) flowing through R2 and the voltage (U2) appearing across it. c) Determine the voltages (U3, U4) and currents (I3, I4) of resistors R3 and R4 respectively. Question 2

Maximum score: 15

Calculate an AC circuit

I

UL L

U

R

UR

Data: U = 24 V f = 50 Hz L = 400 mH R = 150 Ω

Tasks: a) Determine the inductive reactance (XL), and the current used by the circuit (I). b) Determine the voltages (UL, UR) appearing across the inductor and the resistor, respectively. c) Prepare a vector diagram to the correct scale for the current (I) and the voltages (U, UL, UR). Scales: 20 mA ÷ 1cm , and 5 V ÷ 1cm. d) Determine the absolute value of the phase angle (φ) between U and UR.


5/8

2013. május 23.


Név: ........................................................... osztály:......

Question 3

Maximum score: 15

Calculate a common source amplifier basic circuit

The simplified AC schematic representation of the amplifier is as follows: Rg In iin ug

uin

iD

y21S · uGS

1

RG

y 22 S

Out iout RD

uout

Rl

Data: ug = 200 mV y21S = 4.5 mS

Rg = 50 kΩ y22S = 28 µS

RG = 200 kΩ

RD = 10 kΩ

Rl = 15 kΩ

Tasks: a) Draw an amplifier circuit which corresponds to the above schematic representation by using one n-channel JFET, three resistors (RG, RD, RS), and three capacitors (Cin, Cout, CS). The circuit diagram does not have to contain the control signal source and the resistor. A neat hand-drawn chart will be sufficient. b) Determine the output resistance of the amplifier stage (Rout). c) Determine the voltage amplification of the amplifier (Au). d) Determine the input and output voltages (uin, uout) of the amplifier. Question 4

Maximum score: 15

Design a logic network

The serial number form of the logic function is known as follows: F 4 = Σ 4 (2, 4, 5, 6, 7, 10, 12, 14) Tasks: a) Simplify the function above by using the graphical method. Use symbol “A” to denote the variable with the highest place value. b) Realise the simplified function by using NOT-AND-OR gates. The variables are available in original form only. c) Realise the simplified function by using NAND gates. The variables are available in original form only.


6/8

2013. május 23.



Név: ........................................................... osztály:......

7/8

2013. május 23.


Név: ........................................................... osztály:......

Maximum Achieved Serial number of question score score

Topics

1. 3 2. 4 3. 3 4. 3 5. 4 6. 3 7. 3 8. 3 9. 4 10. 4 11. 3 12. 3 1. 15 2. 15 3. 15 4. 15 Total score of the written examination

Simple short questions

Complex questions

Maximum Achieved score for score for topic topic

40

60 100

Correcting teacher

Date: ................................. __________________________________________________________________________ pontszáma egész számra kerekítve/ achieved score rounded to the next integer

programba beírt egész pontszám/ integer score entered in programme

Egyszerű, rövid feladatok/ Simple short questions Összetett feladatok/ Complex questions

Javító tanár/Correcting teacher

Dátum/Date: .................................


Jegyző/Notary

Dátum/Date: .................................

8/8

2013. május 23.

ELEKTRONIKAI ALAPISMERETEK ANGOL NYELVEN

Recommend Documents