2. What is the gap between HIGH and LOW called?
Working gap
Hysteresis gap
Delay gap
Schmitt gap

3. What does "Schmitt Trigger snap-action" mean?
The input snaps HIGH/LOW
The gate operates very quickly
The output only has a HIGH/LOW state
The output goes from one state to the other very quickly

4. Identify the NAND Schmitt Trigger:

(a)    (b)    (c)    (d)    (e)    (f)

5. When the input of Schmitt Trigger Inverter is HIGH,
    the output is:
HIGH
LOW
Depends on the type of gate 
Cannot be determined

6. If a Schmitt Trigger Inverter is connected to another 
      Schmitt Trigger Inverter, the output of the second will be:
In phase with the input of the first gate
Depends on the input of the second inverter
Out of phase with the input of the first gate

7. From the following circuits, identify the oscillator:

(a)    (b)    (c)    (d)

8. Name a method to increase the frequency of a Schmitt Trigger
       oscillator :
Increase the supply voltage
Increase the value of "C"
Increase the value of "R"
Decrease the value of "C"

9. Identify the oscillator producing the highest frequency:
 
(a)    (b)    (c)    (d)

10. Explain how the capacitor in the following circuit is charged:

Via the power rail
Via the input of the gate
Via the 2M2

11. When the capacitor in question 10 is uncharged, the output is:
HIGH
LOW
Oscillating
Mid Rail 

12. The maximum voltage on the capacitor in question 10 is:
3v
half rail voltage
66% of rail voltage
Rail voltage

13. Increasing the value of R in a Schmitt Trigger oscillator will:
Increase the output frequency  
The frequency does not change 
Decrease the output frequency
Increase the Hysteresis value

14. When the capacitor in question 10 is charging, the output is:
HIGH
LOW
Oscillating

15. Select the lowest frequency oscillator:

(a)    (b)    (c)    (d)

16. When the gating line is LOW, the oscillator is:

Inhibited (blocked) (stopped)
Oscillating

17. When the gating line is HIGH, the oscillator is:

Inhibited (blocked) (stopped)
Oscillating

18. The output of the circuit below is:

(a)    (b)    (c)    (d)

19. The output of the circuit at this instant, below is:

HIGH
LOW
Oscillating

20. Identify the correct output waveform:

(a)    (b)    (c)