Wipro Interview Questions With Answers

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1. Add 79H and 86H and tell the contents of flags 2. Scr is used for ac, dc , both 3. Push pull amplifier is used to remove which harmonics even , odd , both 4. PAM is demodulated using low pass filter , high pass filter 5. 16k memory is needed. How many chips with 12 address buses and 4 data buses are needed. 6. AM wave is detected using detector 7. Which flip flop is used for shift registers 8. Program counter does what stores a memory address, address of the present instruction 9. In a bistable multivibrator communication capacitor is used for speed up response , ac coupling 10. Totem pole is what 11. Time costant for an integrator and differentiator should be small , high etc. 12. TV waves are sky waves , space waves etc. 13. Which configuration has highest i p imp. ce , cb , cc 14. Parabolic antenna with 2degree angle. What is its directivity. 15. Given 10 mhz pe modulation and we got a 100 mhz band. How many channels can be there. 16. If o p power is doubled by how much does the sound increase 1db,2db,3db
WIPRO Aptitude Test 1.When a bicycle is in motion,the force of friction exerted by the ground on the two wheels is such that it acts a In the backward direction on the front wheel and in the forward direction on the rear wheel. b In the forward direction on the front wheel and in the backward direction on the rear wheel. c In the backward direction on both the front and rear wheels. d In the backward direction on both the front and rear wheels. Ans. d 2. A certain radioactive element A, has a half life t seconds. In t 2 seconds the fraction of the initial quantity of the element so far decayed is nearly a 29 b 15 c 10 d 45 Ans. a 3. Which of the following plots would be a straight line a Logarithm of decay rate against logarithm of time b Logarithm of decay rate against logarithm of number of decaying nuclei c Decay rate against time d Number of decaying nuclei against time Ans. b 4. A radioactive element x has an atomic number of 100. It decays directly into an element y which decays directly into element z. In both processes a charged particle is emitted. Which of the following statements would be true a y has an atomic number of 102 b y has an atomic number of 101 c z has an atomic number of 100 d z has an atomic number of 101 Ans. b 5. If the sum of the roots of the equation ax2 bx c 0 is equal to the sum of the squares of their reciprocals