21. This symbol is an example of a(n) ________.
(a) SCR
(b) SCS
(c) GTO
(d) DIAC
22. What is the typical range of turn-off times for SCRs?
(a) 5 s to 30 s
(b) 1 s to 5 s
(c) 0.1 s to 1 s
(d) 0.01 s to 0.1 s
23. What is the range of the turn-on times in high-power SCR devices?
(a) 30 s to 100 s
(b) 10 s to 25 s
(c) 5 s to 8 s
(d) 1 s to 5 s
24. Which of the transistors of an SCR are conducting when the SCR is fired and is in the conduction mode?
(a) npn
(b) pnp
(c) Both npn and pnp
(d) Neither npn nor pnp
25. Which of the following transistors is an SCR composed of?
(a) npn, pnp
(b) npn, npn
(c) pnp, pnp
(d) None of the above
Related Posts
555555555527. Which one of the SCR terminals fires the SCR? (a) Anode (b) Cathode (c) Gate (d) All of the above- 555555555540. What is the typical value of the triggering anode gate for SCS devices? (a) 1.5 mA (b) 150 A (c) 15 A (d) 1 A
- 555555555534. Which of the following devices has the smallest turn-off time? (a) SCR (b) GTO (c) SCS (d) LASCR
- 555555555535. Which of the following devices has nearly the same turn-on time as turn-off time? (a) SCR (b) GTO (c) SCS (d) LASCR
- 555555555547. The ________ are the terminals of SCRs. (a) anode and cathode (b) anode, gate, and cathode (c) base, anode, and cathode (d) gate and anode