Online Examination System
View Exam
1 . The shells of an atom represent various energy levels




Edit Delete
2 . In conductors, the valence and conduction bands overlap




Edit Delete
3 . Doping is the process of introducing………….into a semiconductor material.




Edit Delete
4 . ……is responsible for partial conduction in semiconductor.




Edit Delete
5 .

The electric field produced due to recombination of holes and electrons at a p-n junction creates the






Edit Delete
6 . About………… volts is required to overcome the potential barrier is silicon diode.




Edit Delete
7 . Zener diodes are designed to operate in




Edit Delete
8 . In full wave rectification with a center-tap transformer, how many diodes are required?




Edit Delete
9 . For three phase ac rectification how many diodes are required?




Edit Delete
10 .

Three phase rectification provides smoother output than single phase?






Edit Delete
11 . One purpose of using a capacity (usually electrolytic) in a power supply is for




Edit Delete
12 . Apart from a capacitor,……. can also be used remove ac ripples.




Edit Delete
13 . A diode behaves like a non-return valve.




Edit Delete
14 . In removing ac ripples with a capacitor, it must be connected in parallel with the load




Edit Delete
15 . For proper transistor action, the base-emitter junction must be forward biased, and the collector-emitter junction must be reverse biased for a common emitter configuration.




Edit Delete
16 . As an amplifier, a transistor operates in the……………………………………… region




Edit Delete
17 . As a switch the transistor operates in how many regions?




Edit Delete
18 . As a switch that is ON the transistor operates in the……………region




Edit Delete
19 . The emitter current is the sum of base current and collector current.




Edit Delete
20 . In a transistor the collector junction is more heavily doped than the emitter junction




Edit Delete

Developed by Ebenezer Teigaga - RMU Exams Coordinator Tel:+233(0)267657365 Email: ebenezer.teigaga@rmu.edu.gh