Question 1. 1. (TCO 2) Which statement is true in the circuit shown below? (Poin

Question

Question 1.1. (TCO 2) Which statement is true in the circuit shown below?
(Points : 2)       Without pressing any of the pushbuttons, the lamp is on
      While pressing and holding both pushbuttons, the lamp is on
      Pressing the NO pushbutton will not have any effect in the status of the lamp
      All of the above

Question 2.2. (TCO 2) Which of the following devices is an input device? (Points : 2)       An electric heater
      A Limit Switch
      An electric fan
      The coil of a relay            

Question 3.3. (TCO 1) Which statement is true for the relay logic diagram given below considering that the stop pushbutton has been pressed momentarily?


(Points : 2)       NO contacts CR are closed
      The motor is running
      The green light is off
      The red light is off
      None of the above

Question 4.4. (TCO 2) Outputs O1, O4, O5, and O7 of an eight port PLC output module are true. Which one of the following will represent the memory table of the module? (Points : 2)       
      
      
      
            
                                                                                    

Question 5.5. (TCO 2) What will be the data stored in the register C for a logical XOR operation on A and B?  (C = A  XOR  B)
(Points : 2)       11001011
      00010000
      11011011
      00101110

Question 6.6. (TCO 2) Which Boolean expression represents the logic circuit given?

(Points : 2)       
      
      
      None of the above

Question 7.7. (TCO 2) Which ladder logic diagram represents a logic AND gate? (Points : 2)       
      
      
      None of the above

Question 8.8. (TCO 2) The status of I1, I2, and I3 is given in each of the following ladder logic programs. Which of the following statements is correct? (Points : 2)       O2 is true if I1 and I2 are ture but I3 is false.
       O2 is false if I1 and I3 are true, but I2 is false.
       O2 is false if I1 and I3 are true, but I2 is false.
      O2 is true if I1 and I3 are false, but I2 is true.

Explanation / Answer

1)Pressing the NO pushbutton will not have any effect in the status of the lamp

2)The coil of a relay

3)The green light is off

4)d is the answer

5)00010000

6)d is the answer

7)c is the answer

8) O2 is true if I1 and I3 are false, but I2 is true.

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