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Karnataka SSLC JTS : KSEEB Elem of Elec Engg II JTS II Apr 2009

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J X R z W : 9 ] Total No. of Qu estions : 9 ] [ J X z W : 4 [ Total No. of Printed Pages : 4 x z W : J.T.S. III J.T.S. III : | ] y d y ] III Code No. : Subject : ELEMENTS OF ELECTRONICS ENGINEERING III : Date 04.04.2009 : 04.04.2009 : B 10-30 W R 1-30 ] [ : 90 Time : 10-30 A .M. to 1-30 P.M. ] Note : I. [ Max. Marks : 90 Answer all the qu estions. Fill in the blanks with the appropriate figure/word(s) by selecting from the choices given in the brackets : i) 10 1 = 10 The base or radix of a binary system is . ( 2 , 4, 10 ) ii) Only P-type or N-type material acts as a common . ( i nsulator, register, conductor ) iii) Silicon diode requ ires a minimu m forward bias ( knee voltage ) of volt. ( 0 1, 0 3, 0 7 ) [ Turn over J.T .S. III 2 iv) CRT is the heart of . ( oscillosc ope, oscillator, inverter ) v) The nu mbers u sed in arithmetic are called nu mber. ( hexadecimal , decimal , fracti onal ) vi) converts a.c . to d.c . ( Inverter, Converter, Rec tifi er ) vii) In a NOT gate ou tpu t is when input is high. ( c onstant, low, very high ) viii) A transistor is u sed for purpose. ( am plification, rec tificati on, purification ) ix) Flip-flop is memory element. ( four bit, tw o bi t, one bi t ) x) Logic circu its u sed in . ( regi sters, computers, c ounters ) II. a) What is semi-condu ctor ? Give two examples. 2 b) List any three methods of manu facturing the transistors. 3 c) With a neat sketch, explain the working of P-N junction diode in forward bias condition. III. a) 5 Name the materials used in constru ction of LED and list the colour of light they emits. 3 b) What is rectifier ? How are the rectifier circu its classified ? 4 c) Draw a neat diagram of half-wave rectifier. 3 3 IV. a) J.T .S. III Define the term amplifier. On the basis of frequ ency, how are the amplifiers classified ? 3 b) What are the essential requirements of an oscillator ? 3 c) Draw a neat block diagram of cathode ray oscilloscope and label its parts. V. a) 4 Define integrated circuit. Mention any four advantages of operational amplifier. b) Draw the symbol and the ideal equivalent circu it of an Op-A mp. 4 c) List any four applications of Op-A mp. 2 a) Convert 1512 into binary nu mber. 5 b) VI. 4 Write the symbols of the following : 3 i) AND gate ii) OR gate iii) NA ND gate. c) VII. Mention any tw o applications of logic gates. 2 a) Draw a circuit of simple NOT gate and explain briefly. 5 b) What is Flip-flop ? 2 c) Name any three types of shift register. 3 [ Turn over J.T .S. III VIII. a) 4 Explain the following terms : i) Linear I.C. ii) 5 Non-linear I.C. b) 3 c) IX. Name the types of I.C. packages. Write the truth table of A ND gate. 2 a) Define microprocessor. 2 b) Draw a neat sketch of transistor NOR circuit. 5 c) Explain the terms LSI and V LSI. 3

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Additional Info : Karnataka SSLC (Secondary School Leaving Certificate) Junior Technical School (JTS) - Karnataka Secondary Education Examination Board (KSEEB)
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