var questions = new Array();
var choices = new Array();
var answers = new Array();
var response = new Array();

questions[0] = "1. Radiation resistance of half-wave dipole is";
choices[0] = new Array();
choices[0][0] = "75 ohms";
choices[0][1] = "73 ohms";
choices[0][2] = "377 ohms";
choices[0][3] = "300 ohms";
answers[0] = choices[0][1];


questions[1] = "2. If the effective length of an antenna is increased,its directive gains";
choices[1] = new Array();
choices[1][0] = "Becomes infinite";
choices[1][1] = "Remains same";
choices[1][2] = "Decreases";
choices[1][3] = "Increases";
answers[1] = choices[1][2];

questions[2] = "3. An antenna that is circularly polarised is";
choices[2] = new Array();
choices[2][0] = "Helical";
choices[2][1] = "Yagi";
choices[2][2] = "Parabolic";
choices[2][3] = "Loop";
answers[2] = choices[2][0];

questions[3] = "4. An antenna that radiates uniformly in all directions is called ";
choices[3] = new Array();
choices[3][0] = "Hertzian dipole";
choices[3][1] = "Isotropic antenna";
choices[3][2] = "Half-wave dipole";
choices[3][3] = "Helicald antenna";
answers[3] = choices[3][1];


questions[4] = "5. Typical radar antenna has beam width of";
choices[4] = new Array();
choices[4][0] = "5^0";
choices[4][1] = "3^0";
choices[4][2] = "2^0";
choices[4][3] = "1^0";
answers[4] = choices[4][3];

questions[5] = "6. In Indian T.V. the width of one channel is";
choices[5] = new Array();
choices[5][0] = "7 mHz";
choices[5][1] = "5 mHz";
choices[5][2] = "6 mHz";
choices[5][3] = "8 mHz";
answers[5] = choices[5][0];
 
 questions[6] = "7. Interlacing is used in T.V. because";
choices[6] = new Array();
choices[6][0] = "It ensures scanning all lines on the screen";
choices[6][1] = "Vertical sync signals are not needed";
choices[6][2] = "It reduces flicker";
choices[6][3] = "Gives the feeling of picture movement";
answers[6] = choices[6][2];

questions[7] = "8. No picture, No sound, No raster,the trouble is in";
choices[7] = new Array();
choices[7][0] = "Vertical Oscillator";
choices[7][1] = "R.F. amplifier";
choices[7][2] = "Horizontal amplifier";
choices[7][3] = "None of these";
answers[7] = choices[7][3];

questions[8] = "9. As one moves away from transmitter,ground wave  eventually disappears because";
choices[8] = new Array();
choices[8][0] = "Sky wave interferes with ground wave";
choices[8][1] = "Of tilt in wave front";
choices[8][2] = "Of loss of line of sight";
choices[8][3] = "Of limitation of single hop distance";
answers[8] = choices[8][1];

questions[9] = "10. UHF signals normally propagates by means of";
choices[9] = new Array();
choices[9][0] = "Sky wave";
choices[9][1] = "Space wave";
choices[9][2] = "Surface wave";
choices[9][3] = "Duct";
answers[9] = choices[9][1];

questions[10] = "11. In a low level A.M. transmitter,the stage following the modulator shall be";
choices[10] = new Array();
choices[10][0] = "Harmonic generator";
choices[10][1] = "Class C amplifier";
choices[10][2] = "Non-linear amplifier";
choices[10][3] = "Linear amplifier";
answers[10] = choices[10][3];

questions[11] = "12. A carrier is simultaneously by two sine wave with modulation indices 0.8 and 0.6.The resultant index is";
choices[11] = new Array();
choices[11][0] = "1";
choices[11][1] = "0.5";
choices[11][2] = "0.7";
choices[11][3] = "None of these";
answers[11] = choices[11][0];
 
questions[12] = "13. The function of pre-emphasis circuit in a communication system is to boost";
choices[12] = new Array();
choices[12][0] = "The higher audio frequencies";
choices[12][1] = "The modulated wave";
choices[12][2] = "The lower audio frequencies";
choices[12][3] = "The complete audio band";
answers[12] = choices[12][0];

questions[13] = "14. Armstong modulator generates";
choices[13] = new Array();
choices[13][0] = "AM";
choices[13][1] = "PM";
choices[13][2] = "FM";
choices[13][3] = "Both AM & PM";
answers[13] = choices[13][2];

questions[14] = "15. Commonly employed filter in SSB generation is";
choices[14] = new Array();
choices[14][0] = "HP";
choices[14][1] = "RC";
choices[14][2] = "LC";
choices[14][3] = "Mechanical";
answers[14] = choices[14][3];

questions[15] = "16. The function of'padders' in radio receiver is to improve";
choices[15] = new Array();
choices[15][0] = "Sensitivity";
choices[15][1] = "Rejection of Image Frequencies";
choices[15][2] = "Noise reduction";
choices[15][3] = "Tracking";
answers[15] = choices[15][3];


questions[16] = "17. Tropospheric scatter is used in the following range";
choices[16] = new Array();
choices[16][0] = "HF";
choices[16][1] = "VHF";
choices[16][2] = "UHF";
choices[16][3] = "VLF";
answers[16] = choices[16][1];

questions[17] = "18. The fidelity of a receiver is primarily dependent upon";
choices[17] = new Array();
choices[17][0] = "Local oscillator";
choices[17][1] = "Detector stage";
choices[17][2] = "IF amplifier";
choices[17][3] = "Audio amplifier";
answers[17] = choices[17][3];

questions[18] = "19. In communication,noise is most likely to affect the signal ";
choices[18] = new Array();
choices[18][0] = "At transmitter";
choices[18][1] = "Source";
choices[18][2] = "Channel";
choices[18][3] = "Destination";
answers[18] = choices[18][2];


questions[19] = "20. The f.m. signal is passed through frequency tripler,the resultant modulation index will change by a factor of";
choices[19] = new Array();
choices[19][0] = "1";
choices[19][1] = "1/3";
choices[19][2] = "3";
choices[19][3] = "9";
answers[19] = choices[19][2];

questions[20] = "21. F.M. Duscriminator changes F.M. signal into";
choices[20] = new Array();
choices[20][0] = "AM";
choices[20][1] = "FM";
choices[20][2] = "PM";
choices[20][3] = "None of these";
answers[20] = choices[20][3];
 
 questions[21] = "22. Quantization noise occurs in";
choices[21] = new Array();
choices[21][0] = "PCM";
choices[21][1] = "TDM";
choices[21][2] = "FDM";
choices[21][3] = "PWM";
answers[21] = choices[21][0];

questions[22] = "23. Blind speed problem in a radar can be effectively overcome by using";
choices[22] = new Array();
choices[22][0] = "Monopulse technique";
choices[22][1] = "MTI";
choices[22][2] = "Variable PRF";
choices[22][3] = "Conical scanning";
answers[22] = choices[22][2];

questions[23] = "24. If the antenna diameter in a radar system is increased by a factor of 4,the range will increase by a factor of ";
choices[23] = new Array();
choices[23][0] = "1";
choices[23][1] = "8";
choices[23][2] = "4";
choices[23][3] = "2";
answers[23] = choices[23][2];


questions[24] = "25. To represent 35 number in binary,the minimum no. of bits required are";
choices[24] = new Array();
choices[24][0] = "6";
choices[24][1] = "5";
choices[24][2] = "4";
choices[24][3] = "10";
answers[24] = choices[24][0];

questions[25] = "26. The binary equivalent to the decimal fraction 0.68 is";
choices[25] = new Array();
choices[25][0] = "0.1010111";
choices[25][1] = "0.101";
choices[25][2] = "0.10111";
choices[25][3] = "0.010001";
answers[25] = choices[25][0];

questions[26] = "27. To add the binary number 1101 with 1111 one needs";
choices[26] = new Array();
choices[26][0] = "Three full adders";
choices[26][1] = "One full adder with one half adder";
choices[26][2] = "Three full adders and one half adder";
choices[26][3] = "Four half adders"; 
answers[26] = choices[26][2];

questions[27] = "28. To measure high Q inductors, the bridge preferred is";
choices[27] = new Array();
choices[27][0] = "Schering bridge";
choices[27][1] = "Hay's bridge";
choices[27][2] = "Wien bridge";
choices[27][3] = "maxwell bridge"; 
answers[27] = choices[27][1];

questions[28] = "29. The voltage gain of an amplifier used with Boolstrap sweep theoretically shall be";
choices[28] = new Array();
choices[28][0] = "-1";
choices[28][1] = "+1";
choices[28][2] = "Infinity";
choices[28][3] = "No such consideration"; 
answers[28] = choices[29][1];