Session 5 electronics review 1

At what voltage does a silicon diode allow current to flow?

• 3KV

• 0.7V

• 0.1V

• 0.3V

What gives an LED it's colour?

• Lens

• Current applied

• Voltage applied

• Dopant

What is the region called between the N-type and P-type material?

• Gap in between

• Reduction

• Depletion

• Dereliction

An open diode would read what on an ohmmeter?

• High resistance in both directions

• Low resistance in both directions

• High resistance in one direction

• Low resistance in one direction

Clamping diodes are commonly used to prevent what?

• Voltage spikes

• Low voltage conditions

• Reverse voltage

• Resistance surges

In a silicon diode, what is the voltage required before a diode will operate called?

• Turn on voltage

• Turn off voltage

• Reverse voltage

• Bias reverse voltage

Which diode is normally used in reverse bias?

• Germanium

• Silicon

• Zener

• All 3 options are correct

Does a diode allow current to flow in both directions?

• Yes

• No

What are the legs of a diode called?

• Positive/Negative

• Long/short

• Anode/Cathode

• +/-

Direct transistor controlled switching of a component is used in _______ applications.

• low current, high frequency

• low current, low frequency

• high current, high frequency

• high current, low frequency