JE – 720

*JE720*

IV Semester B.E. (Mechanical) Degree Examination, June/July 2013 (2K6 Scheme) PROGRAMMING C AND BASIC ELECTRONICS (Bridge Course) Time : 3 Hours

Max. Marks : 100

Instruction : Answer any five full questions choosing at least two questions from each Part. PART – A 1. a) Explain the Printf( ) and Scanf( ) functions used in C.

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b) Explain the different types of operators used in C, with examples.

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c) Write a program to find the sum of N natural numbers.

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2. a) Explain the following statements used in C with their syntax and examples.

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i) if-else statement ii) switch statement iii) for statement iv) goto statement v) do-while statement. b) Write a program to find the largest of three numbers.

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3. a) Explain the call by value and the call by reference methods in functions, with suitable example program. 10 b) Write a program to search a key element using Binary search.

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4. a) What are arrays ? How do you declare and initialize two dimensional array ? Explain with examples.

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b) Write a program to find the sum of two matrices.

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c) Explain any two string operations used in C with examples.

6 P.T.O.

*JE720*

JE – 720 PART – B 5. a) Explain the following terms :

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i) Donor and acceptor impurities ii) Forward and Reverse biased p-n junction. b) Define the term rectifier. Explain the working of a full-wave rectifier with the help of a circuit diagram and waveforms. 6. a) What are OP-AMPs ? Design an integrator and voltage follower using an OP-AMP. b) Calculate the output voltage of an adder for the following values : R1 = 250 K Ω

V1 = – 3V

R2 = 500 K Ω

V2 = 3V

R3 = 1M Ω

V3 = 2V

7. a) Design the basic gates using the universal gates. b) Simplify the following expressions and draw logic diagram for the simplified expression :

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i) ( X Y Z + X Y Z + Y Z + X Z ) ii) ( A + B + C) (A + B + C ) ( A + B ) . 8. a) Convert the following : i) (342.56)10 = (?)16 iii) (11100010101)2 = (?)8 v) (10101000010)2 = (?)16

10 ii) (18546.49)10 = (?)2 iv) (ABCD)16 = (?)8

b) Perform the following subtraction using 1’s complement and 2’s complement. i) 1111 – 1101 ii) 10111 – 10011 iii) 1101 – 1001.

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c) Verify the following equation A ⊕ B ⊕ C = A B C + AB C + A B C + ABC .

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