15-19

15 What combination of input istru t ons is needed forthe output X to be TRUE? K H A A, B, and G true B. A and G true C. A and C true D. A G, and C true 16. What combination of input instructions is needed for the output Y to be TRUE? A BC K H A D and E false. B. K, D, and F true. C. K, H, and F true D. K and H true and F faise. 17. In the ladder below, the valve on push button is a NO momentary switch and Valve off push button is a NC momentary switch. Which statement below is true? Valve sole seaing contat A the Valve solenoid is on after the Valve on PB switch is pressed and released and is turned Off when the Valve off PB switch is pressing B. The Valve solenoid is off while the Valve on switch is held down and Valve off is not c The Valve solenoid is on after the Valve on switch is pressed and released while the Valve switch is held down. D. The Valve solenoid is on while the Valve on switch is held down and Valve off is held down. 18 What is the file address for a timer? A I:1 B. O: 1 C. T: 1 D. T: 4 19. The OTE output instruction is A true, activated if the rung link to the left is true C. assigned the (-(U)-) or (-(L)-) symbols is true B. not reset to a false state when the rung is false D. a retentive type output