2020 MTest_Questions

I have an O Gauge track and would like to convert it into a “sensored” track. Additionally, I would like to connect that track to an ESP-WROOM-32 board that should flash an LED whenever the track detects a non-moving train. Please list all the components (and how many of each) needed. Also, what’s the procedure for connecting the components?

Is it required to use a PMMC instrument in an Instrument transformer based measurement system? a. No, not required b. Yes,required c. Can't be said d. It is optional

Circuit Logic. Match each statement to the proper circuit. All circuits have been drawn with a light (L) to represent the load, whether it is a motor, bell, or any other kind of load. In addition, each switch is illustrated as a pushbutton whether it is a maintained switch, momentary switch, pushbutton, switch-on target, or any other type of switch. from electrical motor controls for integrated systems workbook 2014 chapter 5

A common objective when manufacturing printed circuit boards (PCBs) is O a. maximizing the number of drill bit changes. O b. maximizing the number of holes drilled. c. minimizing the total distance the drill bit must be moved. O d. minimizing the number of holes drilled.

Subject: Digital Logic Design An aircraft’s functional monitoring system. A circuit is required to indicate the status of the landing gears prior to Take off. The plane has three landing gear: right, left and center. After the takeoff, the pilot will activate ‘gear up’ switch to retract the landing gear. Assume that has been done. A green LED will turn on in the cockpit only if all three landing (03) gear are properly retracted. A red LED will turn on if any of the three (03) landing gear fail to retract properly after takeoff. When landing gear is properly retracted, a corresponding sensor will provide High voltage to a logic circuit. When a landing gear has failed to retract properly, the sensor provides a Low voltage signal to the logic circuit. Design and implement the circuit of the system with the help of logic gate.

1- Draw the complete circuit diagram that illustrates the experiment concept as in figure 5 by showing the pins number. Show the following in your plot (Arduino board, steppermotor coils and the driver circuit). Note: The drawing should be on paper and not with artificial intelligence, please.

What is NEC and what is the purpose of it? Does it present the maximum standard or the minimum?

Stop ducking the question and just answer it. Number 14 letter a.