Related Questions

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
If two currents are in the same direction at any instant of time in a given branch of a circuit, the net current at that instant
A Is zero
B Is the sum of the two currents
C Is the difference between the two currents
D Cannot be determined
While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is
A Short-circuited
B Open circuited
C Alright
D Leaky
The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as
A One dimensional flow
B Uniform flow
C Steady flow
D Turbulent flow
To understand how the output voltage is shaped by a 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
A differentiator is usually not a part of a control system because it
A Reduces damping
B Reduces the gain margin
C Increases input noise
D Increases error
In an RC differentiator, responding to repetitive pulses, the average value of the output.
A Is zero
B Is equal to the input voltage
C Is 63 percent of the input voltage
D Cannot be determined
In an OP-amp differentiator
A The amplitude of output is proportional to rate of change of input
B The amplitude of output is proportional to input
C Output occurs when input is finite and constant
D Polarity of input and output is the same
An RC differentiator acts as a
A Low-pass filter
B High-pass filter
C Band-pass filter
D Band-stop filter
In an RL differentiator, when the input pulse goes from its low level to its high level,
A The inductor prevents a sudden change in voltage
B The inductor prevents a sudden change in current
C Voltage across the inductor instantly reaches 63% of input voltage
D Voltage across the inductor is zero

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