M4: LESSON 5 QUIZ

A two-terminal parallel-inverse combination of semiconductor layers that permits triggering in either direction.

• Diac

• Triac

• SCR

• Transistor

Which of the following is the symbol for DIAC?

• 
• 
• 
• 

What does DIAC stand for?

Conduction occurs in a DIAC when the _________ _______ is reached with either polarity across the two terminals

What will happen to DIAC when the current drops below the holding value?

• The DIAC will continue to conduct current even below the holding value.

• The DIAC will turn off and stop conducting current.

• The DIAC will become damaged and stop functioning properly.

• The DIAC will remain in its last conducting state until the voltage across it drops below its threshold voltage.

A three-terminal semiconductor device that can conduct current in both directions when triggered.

• DIAC

• TRIAC

• SCR

• TRANSISTOR

Which of the choices is the symbol for TRIAC?

• 
• 
• 
• 

What method is used to control average power to a load using TRIAC?

• Source control

• Power control

• Phase Control

• Phase power

During each positive half-cycle of the AC, the TRIAC is off for a certain interval which is called what?

• Induction angle

• Conduction angle

• Pause angle

• Delay Angle

This is when the TRIAC is triggered on and conducts current through the load for the remaining portion of its positive half-cycle.

• Conduction angle

• Delay angle

• Induction angle

• Phase angle