Subject:electronic engineering How BJT acts as a switch?

11. DIAC and TRIAC are similar in that both devices. a. Can use breakover voltage b. can be used in ac circuits c. are bidirectional d. all of the above   12. These are semiconductor devices that are primarily used in electronics as electronically controlled switches a. Diodes b. Transistors c. Vacuum Tubes d. Thyristors   13. If an SCR is suspected of not functioning properly, it should be tested a. with power off b. with multimeter set to the diode or high resistance function c. With the SCR leads isolated d. All of the above   14. A thyristor that looks like two back-to-back 4 layer diodes is the a. SCR b. Triac c. SCS d. DIAC   15. A device that has an unstable negative resistance region is the a. UJT b. SCS c. TRIAC d. DIAC

Design a circuit to measure AC power using pic microcontroller. 1. Write the circuit diagram. 2. List the required components. 3. Illustrate the required formulas for this operation. 4. Write the program for this application. 5. Display the measured reading on LCD.

Explain the characteristics of LDR? What is the use of Multimeter in the experiment?

A) What is a rectifier? B) What electronic component is used to filter the voltage at the rectifier output?

Explain the concept of Industrial IoT (IIoT) and its applications in manufacturing.

If the load resistance of a capacitor-filtered full-wave rectifier is increased, the ripple voltage Select one: a. increases b. doubled c. has different frequency d. not affected e. decreases