CET EXAM QUESTIONS AND ANSWERS

which of the following wires has the greatest cross sectional area - Answer- 9awg the capacitance of a capacitor __________ if the distance between the plates decreases while all other properties of the capacity remain the same. - Answer- Increases A voltmeter that converts AC/DC by rectifying the voltage, would be used to indicate the correct value of measured _____ - Answer- Varying DC voltage only In the drawing below, what is the current through the resistor? - Answer- 2 amps Which of the below waveforms show approximately one complete cycle? - Answer- A and D What is the peak voltage of the waveform below? - Answer- 7v Which of the below would be the best test frequency for general audio troubleshooting? - Answer- 1 KHz What is the purpose of a coupling capacitor? - Answer- To pass the AC signal, while isolating the DC part of the circuit Which would be the most likely cause of hum in an amplifier, but only one of the switch to the CD position? - Answer- Bad shielded cable from the CD to the amplifier input Distortion in an audio amplifier occurs when _________ ? - Answer- An amplifier stage input signal level is too high Oscillators use quartz crystals. What effect did these crystals show? - Answer- Piezoelectric effect This DC circuit will require how many RC time Constance to charge the capacitor to 63% of the applied voltage? - Answer- 1 Which One of the following integrated circuit or semiconductor devices normally requires the most careful handling to avoid damage by static electricity? - Answer- CM