Q.1     A Schmitt trigger is?
A)    A comparator with only one trigger point
B)    A comparator with hysteresis
C)    A comparator with three trigger points
D)    None of these
Ans : B

Q.2    The output of a Schmitt trigger is a?
A)    Pulse waveform
B)    Sawtooth waveform
C)    Sinusoidal waveform
D)    Triangular waveform
Ans : A

Q.3    The standard supply voltage for an ordinary operational amplifier is?
A)    15 V
B)    13 V
C)    12 V
D)    10 V
Ans : C

Q.4    A comparator with a Schmitt trigger has?
A)    Two trigger levels
B)    A fast response
C)    A slow response
D)    One trigger level
Ans : A

Q.5    Refer to the given figure. Determine the lower trigger point, If R_i = 47 KΩ, R_fb = 200 KΩ, V_in = 2.0 Vpp and V_out = 13 Vpp?


A)    + V(out)max
B)    – V(out)max
C)    - 2.47 V
D)    + 2.47 V
Ans : C

Sources