NCCER 26404 Basic Electrical Theroy- Test Questions & Answers

NCCER 26404 Basic Electrical Theroy-
Test Questions & Answers
An SCR is made from adjoining layers of semiconductor material in the . Correct Ans-PNPN
arrangement



In the figure provided, the lead marked A is the transistor . Correct Ans-emitter




AC power can be converted to DC power using . Correct Ans-rectifier diodes




A transistor is made by joining . Correct Ans-three layers of semiconductor material




The figure provided shows the electrical symbol for a(n) . Correct Ans-NPN transistor




A device that can be described as a diac with a gate terminal added is a(n) ________. Correct
Ans-triac



Silicon is widely used as a semiconductor because it . Correct Ans-withstands heat




An atom that loses a negatively charged electron becomes a . Correct Ans-positive ion



In order to permit the emergence of the MAXIMUM number of photons in an LED, the
conducting surface Correct Ans-connected to the P-type material is much smaller