DIODES and APPLICATIONS Online Test – Questions and Answers 1. With full-wave rectification, current through the load resistor must be: in the same direction to the external load from the reverse biased diode in opposite directions 2. If the frequency of the applied ac signal to a half-wave rectifier is 60 Hz, the frequency of the pulsating dc output will be 30 pps 60 pps 90 pps 120 pps 3. DC power should be connected to forward bias a diode as follows: – anode, + cathode – cathode, – anode + anode, – cathode + cathode, + anode 4. Providing a constant output regardless of ac input or load resistance changes is the function of a: rectifier filter transformer regulator 5. The conduction band is closest to the valence band in conductors semiconductors The distance is the same for all of these insulators 6. At any given time in an intrinsic piece of semiconductor material at room temperature holes are created recombination occurs electrons drift randomly all 7. An IC regulator receives an overload; it will: sample and adjust provide more voltage shut down compensate for heat 8. When a diode is destroyed it has infinite impedance. When damaged by heat it will probably: open short conduct less conduct more 9. List three diode packages: small current package, large current package, clip package clip package, DIP, small current package small current package, large current package, and SIP DIP, small current package, large current package 10. With a half-wave rectified voltage across the load resistor, load current flows for what part of a cycle? 0 degrees 90 degrees 180 degrees 360 degrees Loading … Question 1 of 10
