1. What is a control relay? A. A remotely operated switch B. A device that has a DPST switch. C. A device used to release relays. D. A device to control all relays. 2. What sensor measures the value without touching the product? A. Temperature sensor. B. Proximity sensor C. Float sensor D. Relay weight sensor. 3. What sensor measures the value when touching the product? A. Temperature sensor. B. Proximity sensor C. Limit switch. D. Relay weight sensor 4. Which of the following is not a component of electromagnetic relay? A. Electromagnet. B. Contacts. C. Coil. D. Module. 5. What does the term XI0 stand for in a PLC scan? A. Examine if open. B. Normally open. C. Examine if closed. D. Normally close. A. O:3/1 B. 0:3/1 7. Which one of the following statements describes the status of CR1, M1, and SV1 if PB1 is pushed, and LSI is closed? L2 PBt PB2 CR1-1 LS1 CR1-2 SV1 Rung CR1-3 A. CRI IS OFF, MI is OFF, and SVI is OPEN. B. CR1 IS ON, Ml is OFF, and SV1 is CLOSE C. CR1 IS ON, Ml is OFF, and SV1 is OPEN (Energized). D. CRI IS OFF, M1 is OFF and SV1 is CLOSE