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

questions[0] = "1. The typical squelch circuit";
choices[0] = new Array();
choices[0][0] = "Cuts off an audio amplifier when the carrier is absent";
choices[0][1] = "Cuts off an IF amplifier when the AGC is maximum";
choices[0][2] = "Cuts off an IF amplifier when the AGC is minimum";
choices[0][3] = "Eliminates the RF interference when the signal is weak";
answers[0] = choices[0][0];


questions[1] = "2. For a signal amplitude modulated to a depth of 100% by sinusoidal signal, what is the power ?";
choices[1] = new Array();
choices[1][0] = "Same as the power of unmodulated carrier";
choices[1][1] = "Twice as the power of unmodulated carrier";
choices[1][2] = "Four times the power of unmodulated carrier";
choices[1][3] = "3/2 times the power of unmodulated carrier";
answers[1] = choices[1][3];

questions[2] = "3. In FM, the frequency deviation is generally";
choices[2] = new Array();
choices[2][0] = "Proportional to modulating frequency";
choices[2][1] = "Proportional to amplitude of modulating signal";
choices[2][2] = "Constant";
choices[2][3] = "Directly proportional to amplitude and inversely proportional to modulating frequency";
answers[2] = choices[2][1];

questions[3] = "4. Audio frequency range lie between";
choices[3] = new Array();
choices[3][0] = "20 Hz and 20 KHz";
choices[3][1] = "20 KHz and 200 KHz";
choices[3][2] = "2 MHz and 20 MHz";
choices[3][3] = "20 MHz and 200 MHz";
answers[3] = choices[3][0];


questions[4] = "5. Maximum undistorted power output of a transmitter can be expected when its modulation is";
choices[4] = new Array();
choices[4][0] = "50 %";
choices[4][1] = "Between 50 % and 90 %";
choices[4][2] = "100 %";
choices[4][3] = "More than 100 %";
answers[4] = choices[4][2];

questions[5] = "6. An FM signal with a deviation a is passed through a mixer, and has its frequency reduced six fold. The deviation in the output of the mixer will be equal to";
choices[5] = new Array();
choices[5][0] = "6";
choices[5][1] = "6a";
choices[5][2] = "a";
choices[5][3] = "Indeterminate";
answers[5] = choices[5][2];
 
 questions[6] = "7. What is the unit of modulation index";
choices[6] = new Array();
choices[6][0] = "Hertz";
choices[6][1] = "Hz^-1";
choices[6][2] = "Hz^-2";
choices[6][3] = "No unit";
answers[6] = choices[6][3];

questions[7] = "8. In the stabilized reactance modulator AFC system";
choices[7] = new Array();
choices[7][0] = "The discriminator must have a time constant to prevent demodulation";
choices[7][1] = "The higher the discriminator frequency, the better the oscillator frequency stability";
choices[7][2] = "The discriminator frequency must not be too low, or the system will fail";
choices[7][3] = "Phase modulation is converted into FM by the equalizer circuit";
answers[7] = choices[7][2];

questions[8] = "9. The percentage saving in power of 100% modulated suppressed carrier AM signal is";
choices[8] = new Array();
choices[8][0] = "80";
choices[8][1] = "66 2/3";
choices[8][2] = "50";
choices[8][3] = "40";
answers[8] = choices[8][1];

questions[9] = "10. The maximum I or V on the modulated carrier wave is 5 units and minimum is 3 units. The percentage of modulation will be equal to";
choices[9] = new Array();
choices[9][0] = "100";
choices[9][1] = "80";
choices[9][2] = "50";
choices[9][3] = "25";
answers[9] = choices[9][3];

questions[10] = "11. An oscillator at 4.2 MHz is followed by two frequency doublers and two triplers. The ouput frequency will be";
choices[10] = new Array();
choices[10][0] = "84 MHz";
choices[10][1] = "112.4 MHz";
choices[10][2] = "151.2 MHz";
choices[10][3] = "303.4 MHz";
answers[10] = choices[10][2];

questions[11] = "12. Tuned voltage amplifiers are not used";
choices[11] = new Array();
choices[11][0] = "Radio Receivers";
choices[11][1] = "In public address system";
choices[11][2] = "TV Receivers";
choices[11][3] = "None of these";
answers[11] = choices[11][1];
 
questions[12] = "13. A 3A modulation is sometimes used to";
choices[12] = new Array();
choices[12][0] = "Permit the receiver to have a frequency synthesizer";
choices[12][1] = "Reduce the bandwidth required for transmission";
choices[12][2] = "Reduce the power that must be transmitted";
choices[12][3] = "Simplify the frequency stability problem in reception";
answers[12] = choices[12][3];

questions[13] = "14. The final power amplifier in an FM transmitter generally operates as";
choices[13] = new Array();
choices[13][0] = "Class A";
choices[13][1] = "Class B";
choices[13][2] = "Class C";
choices[13][3] = "Class D";
answers[13] = choices[13][2];

questions[14] = "15. Quantizing noise takes place in";
choices[14] = new Array();
choices[14][0] = "Time-Division Multiplex";
choices[14][1] = "PCM";
choices[14][2] = "PPM";
choices[14][3] = "Frequency-Division Multiplex";
answers[14] = choices[14][2];

questions[15] = "16. A pre-emphasis circuit provides extra noise immunity by";
choices[15] = new Array();
choices[15][0] = "Converting the phase modulation to frequency modulation";
choices[15][1] = "Preamplifying the whole audio band";
choices[15][2] = "Boosting the bass frequencies";
choices[15][3] = "Amplifying the higher audio frequencies";
answers[15] = choices[15][3];


questions[16] = "17. If all three elements of a given Delta-connected network are pure inductive reactance, the three elements of the corresponding star connected network";
choices[16] = new Array();
choices[16][0] = "Will all be pure capacitive reactances";
choices[16][1] = "Will all be pure inductive reactances";
choices[16][2] = "Can be either inductive or capacitive reactances";
choices[16][3] = "Will be inductive or capacitive reactances depending upon the delta connected inductive reactances magnitudes";
answers[16] = choices[16][1];

questions[17] = "18. Which of the following laws of electrical network is used in the node voltage analysis of the networks ?";
choices[17] = new Array();
choices[17][0] = "Kirchoff's voltage Law";
choices[17][1] = "Faraday's Law";
choices[17][2] = "Kirchoff's Current Law";
choices[17][3] = "Ohm's Law";
answers[17] = choices[17][2];

questions[18] = "19. A sinusoidal waveform is mathematically represented by";
choices[18] = new Array();
choices[18][0] = "An Even Function";
choices[18][1] = "An Odd Function";
choices[18][2] = "A function that is even as well as half wave symmetric";
choices[18][3] = "A function that is neither even nor odd";
answers[18] = choices[18][1];


questions[19] = "20. The trigonometric fourier series expansion of an even function that is also half-wave symmetric shall contain";
choices[19] = new Array();
choices[19][0] = "Odd harmonics of sine terms only";
choices[19][1] = "Both sine and cosine terms";
choices[19][2] = "Only cosine terms";
choices[19][3] = "Only odd harmonics of cosine terms";
answers[19] = choices[19][3];

questions[20] = "21. If a synchronous converter is supplied with 12 phase A.C supply, the number of slip rings will be";
choices[20] = new Array();
choices[20][0] = "6";
choices[20][1] = "9";
choices[20][2] = "12";
choices[20][3] = "15";
answers[20] = choices[20][2];
 
 questions[21] = "22. When a rotor converter is started by means of a small auxiliary motor, the power of motor, must be";
choices[21] = new Array();
choices[21][0] = "Less than the D.C output of converter";
choices[21][1] = "Less than the D.C input of converter";
choices[21][2] = "Half of D.C output of converter";
choices[21][3] = "Slightly more than the value of friction and windage losses at rated speed";
answers[21] = choices[21][3];

questions[22] = "23. Maximum current rating of a glass bulb mercury arc rectifier is usually restricted to";
choices[22] = new Array();
choices[22][0] = "150 A";
choices[22][1] = "400 A";
choices[22][2] = "500 A";
choices[22][3] = "2000 A";
answers[22] = choices[22][2];

questions[23] = "24. In a arc rectifier the drop in voltage at the cathode is approximately";
choices[23] = new Array();
choices[23][0] = "10 Volt";
choices[23][1] = "6 to 7 Volts";
choices[23][2] = "160 to 170 Volts";
choices[23][3] = "1.2 Volts";
answers[23] = choices[23][1];


questions[24] = "25. In a mercury arc rectifier the cathode voltage drop is because of";
choices[24] = new Array();
choices[24][0] = "Surface Resistance";
choices[24][1] = "Expenditure of energy in librating electrons from mercury";
choices[24][2] = "Expenditure of energy in ionization";
choices[24][3] = "Expenditure of energy in overcoming the electrostatic field";
answers[24] = choices[24][1];

questions[25] = "26. The average life of the glass bulb rectifier is";
choices[25] = new Array();
choices[25][0] = "80 to 1000 Hours";
choices[25][1] = "2000 to 2500 Hours";
choices[25][2] = "10,000 to 15,000 Hours";
choices[25][3] = "200,000 to 250,000 Hours";
answers[25] = choices[25][2];

questions[26] = "27. The vacuum inside the glass bulb of a mercury arc rectifier is of the order of";
choices[26] = new Array();
choices[26][0] = "5 x 10^-3 cm of Hg";
choices[26][1] = "5 x 10^-4 cm of Hg";
choices[26][2] = "5 x 10^-5 cm of Hg";
choices[26][3] = "5 x 10^-6 cm of Hg";
answers[26] = choices[26][2];


questions[27] = "28. A 3 anode mercury arc rectifier has an anode current of overlap 300. Neglecting arc drop, the regulation will be approximately";
choices[27] = new Array();
choices[27][0] = "4%";
choices[27][1] = "5%";
choices[27][2] = "7%";
choices[27][3] = "9%";
answers[27] = choices[27][3];

questions[28] = "29. Which of the following is the loss within the mercury arc rectifier chamber";
choices[28] = new Array();
choices[28][0] = "Voltage drop at the cathode";
choices[28][1] = "Voltage drop at the anode";
choices[28][2] = "Voltage drop in arc";
choices[28][3] = "All of the above";
answers[28] = choices[28][3];
 
 questions[29] = "30. For single phase supply frequency of 5 Hz, ripple frequency in full wave rectifier is";
choices[29] = new Array();
choices[29][0] = "250";
choices[29][1] = "500";
choices[29][2] = "100";
choices[29][3] = "200";
answers[29] = choices[29][2];

questions[30] = "31. As compared to a CB amplifier, a CE amplifier has";
choices[30] = new Array();
choices[30][0] = "Lower Current Amplification";
choices[30][1] = "Higher Current Amplification";
choices[30][2] = "Lower Input Resistance";
choices[30][3] = "Higher Input Resistance";
answers[30] = choices[30][1];