Related Questions

In an RC differentiator, 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
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
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
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
In a two value capacitor motor, the capacitor used for running purposes is
A air capacitor
B paper spaced oil filled type
C ceramic type
D a.c. electrolytic type
When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is
A Short-circuited
B All right
C Faulty
D None of the above

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