RC Differentiator


Q.1     In an RC differentiator, the capacitor?
A)    Charges exponentially at a rate depending on the RC time constant.
B)    Charges exponentially at a rate depending on the input voltage.
C)    Charges when the input voltage is decreasing.
D)    Charges to approximately one time constant.
Ans : A

Q.2    To understand how the output voltage is shaped by a RC Differentiator, you must consider?
A)    The response to the rising pulse edge.
B)    The response between the rising and falling edges.
C)    The response to the falling pulse edge.
D)    All of the above.
Ans : D

Q.3    In an RC RCDifferentiator, the sum of the capacitor voltage and the resistor voltage at any instant?
A)    Must be zero
B)    Must be equal to the applied voltage
C)    Is less than the applied voltage but greater than zero
D)    Cannot be determined
Ans : B

Q.4     In an RC RCDifferentiator, responding to repetitive pulses, the average value of the output?
A)    Is zero
B)    Is equal to the input voltage
C)    Is 63 % of the input voltage
D)    Cannot be determined
Ans : A

Q.5    An RC differentiator acts as a?
A)    Low pass filter
B)    High pass filter
C)    Band pass filter
D)    Band-stop filter
Ans : B