Page 1025 - Basic Electrical Engineering

b. metal oxide semiconductor field excited transistor
c. metal oxide semiconductor field effect transistor
d. metal oxide silicon field excited transistor.

19. Which of the following does not belong to the thyristor family?

a. DIAC
b. TRIAC
c. SCR
d. SCS.

20. We turn off a conducting SCR by

a. reducing the anode current below the holding current
b. decreasing the voltage applied across the SCR
c. removing the gate terminal connection
d. applying a negative gate voltage.

21. Which of the following is not an opto-electronic device?

a. Light-emitting diode
b. Liquid crystal display
c. Photovoltaic cell
d. Silicon-controlled rectifier.

Answers to Multiple Choice Questions

1. (b) 2. (a) 3. (a) 4. (b) 5. (b)

6. (d) 7. (b) 8. (b) 9. (b) 10. (c)

11. (d) 12. (a) 13. (c) 14. (d) 15. (d)

16. (c) 17. (d) 18. (c) 19. (a) 20. (a)
21. (d)