questions=new Array(); questions[0]=new Array(); //Question 1 definition questions[0][0]="Whwn a pentavalent impurity is used to dope silicon material the result is:"; //Question text questions[0][1]=" an N-type material"; //Answer option no.1 questions[0][2]=" a P-type material"; //Answer option no.2 questions[0][3]=" a pure semiconductor material."; //Answer option no.3 questions[0][4]="1"; questions[1]=new Array(); //Question 2 definition questions[1][0]="A diode conducts currrent:"; //Question text questions[1][1]=" in both directions"; //Answer option no.1 questions[1][2]=" in one direction only"; //Answer option no.2 questions[1][3]=" first in one direction and then in the other direction."; //Answer option no.3 questions[1][4]="2"; questions[2]=new Array(); //Question 3 definition questions[2][0]="In normal operation the base-emitter junction of a transistor used as an amplifier is:"; //Question text questions[2][1]=" forward biased"; //Answer option no.1 questions[2][2]=" reverse biased"; //Answer option no.2 questions[2][3]=" neither reverse nor forward biased."; //Answer option no.3 questions[2][4]="1"; questions[3]=new Array(); //Question 4 definition questions[3][0]="The connections to a thyristor (or silicon controlled rectifier) are labelled"; //Question text questions[3][1]=" anode, cathode, gate"; //Answer option no.1 questions[3][2]=" collector, base, emitter"; //Answer option no.2 questions[3][3]=" gate, source, drain."; //Answer option no.3 questions[3][4]="1"; questions[4]=new Array(); //Question 5 definition questions[4][0]="The output of the two windings of an LVDT is normally connected to:"; //Question text questions[4][1]=" a high-pass filter"; //Answer option no.1 questions[4][2]=" a high-gain amplifier"; //Answer option no.2 questions[4][3]=" a phase sensitive detector."; //Answer option no.3 questions[4][4]="3"; questions[5]=new Array(); //Question 6 definition questions[5][0]="When negative feedback is applied to an amplifier:"; //Question text questions[5][1]=" the gain is increased and the bandwidth is reduced"; //Answer option no.1 questions[5][2]=" the gain is reduced and the bandwidth is increased"; //Answer option no.2 questions[5][3]=" both bandwidth and gain are increased."; //Answer option no.3 questions[5][4]="2"; questions[6]=new Array(); //Question 7 definition questions[6][0]="The AC supply to a synchro is applied to:"; //Question text questions[6][1]=" the rotor; R1 and R2"; //Answer option no.1 questions[6][2]=" the stator; S1, S2 and S3"; //Answer option no.2 questions[6][3]=" the rotor and stator; R1 and S1."; //Answer option no.3 questions[6][4]="1"; questions[7]=new Array(); //Question 8 definition questions[7][0]="The tracks on a printed circuit board are made from:"; //Question text questions[7][1]=" an etched copper coating"; //Answer option no.1 questions[7][2]=" an aluminium filmte applied during manufacture"; //Answer option no.2 questions[7][3]=" a metal oxide film deposited on the surface of the board."; //Answer option no.3 questions[7][4]="1"; questions[8]=new Array(); //Question 9 definition questions[8][0]="Printed circuit board connectors are frequently gold plated. This is because it:"; //Question text questions[8][1]=" reduced contact friction"; //Answer option no.1 questions[8][2]=" improves contact reliability"; //Answer option no.2 questions[8][3]=" increases contact resistance."; //Answer option no.3 questions[8][4]="2"; questions[9]=new Array(); //Question 10 definition questions[9][0]="Three conducting silicon diodes are connected in series. The voltage drop across them will be:"; //Question text questions[9][1]=" less than 0.5 V"; //Answer option no.1 questions[9][2]=" about 1 V"; //Answer option no.2 questions[9][3]=" between 1.8 V and 2 V."; //Answer option no.3 questions[9][4]="3"; document.write("

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