Deck 50: The Scr

Question 1

The silicon-controlled rectifier (SCR) is often referred to as a PNPP junction.

Answer 1

False

Question 2

If the ohmmeter indicates continuity through the SCR before the gate is touched to the anode, the SCR is ____.

A) working correctly
B) open
C) Shorted
D) Disconnected

Answer 2

C

Question 3

The amount of current required to keep the SCR turned on is called the ____________________ current.

Answer 3

holding

Question 4

What is phase shifting?

Question 5

How can the SCR be tested with an ohmmeter?

Question 6

The SCR can control all of the positive waveform through the use of ____ shifting.

A) diode
B) phase
C) Rectifier
D) Gate

Question 7

When the SCR is connected in an AC circuit, the output is ____________________ current.

Question 8

To phase shift an SCR, the gate circuit must be unlocked, or separated, from the anode circuit.