Question 1

What is the output voltage at the end of the input pulse to an RL integrator if the resistance is 1.2 k Ω, the inductor is 200 mH and the input is a 5 V, 1.2 ms pulse?

Accepted Answer

A) 4.532 V 
B) 5 V 
C) 4.75 V 
D) 3.16 V 
A) 4.532 V 
B) 5 V 
C) 4.75 V 
D) 3.16 V

Question 2

RC integrators can be used in timing circuits to set a specified time delay if the output is coupled to:

Accepted Answer

A) a voltage threshold sensitive circuit. 
B) a power threshold sensitive circuit. 
C) a voltage generating circuit. 
D) a current sensitive circuit. 
A) a voltage threshold sensitive circuit. 
B) a power threshold sensitive circuit. 
C) a voltage generating circuit. 
D) a current sensitive circuit.

Question 3

LC and RC integrators, with respect to input and output, perform exactly the same.

Accepted Answer

A) True 
 B)False

Question 4

In an RL integrating circuit, the output is taken across the inductor.

Accepted Answer

A) True 
 B)False

Question 5

What is VC at the end of the input pulse to an RC integrator if the resistance is   the capacitance is 47   and the input is a 15 V, 470 ms pulse?

Accepted Answer

A) 9.48 V 
B) 14.3 V 
C) 13 V 
D) 14.7 V 
A) 9.48 V 
B) 14.3 V 
C) 13 V 
D) 14.7 V

Question 6

It takes a capacitor 5 time constants to nearly reach full charge.

Accepted Answer

A) True 
 B)False

Question 7

The output from an RC integrator resembles the input if ________.

Accepted Answer

A)    is less than the pulse width 
B)    is much larger that the pulse width 
C)    is much less than the pulse width 
D)    is equal to the pulse width 
A)    is less than the pulse width 
B)    is much larger that the pulse width 
C)    is much less than the pulse width 
D)    is equal to the pulse width

Question 8

A given circuit using an RC integrator to turn on after 20 seconds now takes now takes much longer to turn on. What is the most probable cause?

Accepted Answer

A) The resistor has decreased in value. 
B) The capacitor has decreased in value. 
C) The capacitor has increased in value. 
D) The resistor has opened. 
A) The resistor has decreased in value. 
B) The capacitor has decreased in value. 
C) The capacitor has increased in value. 
D) The resistor has opened.

Question 9

The output of a differentiator circuit will reach the same maximum and minimum levels as the
input as long as the time constant of the circuit is less than the width of the input pulse.

Accepted Answer

A) True 
 B)False

Question 10

What is one time constant in an integrating circuit if a   resistor is in series with a   capacitor?

Accepted Answer

A) 0.047 ms 
B) 0.47 ms 
C) 0.47 s 
D)    
A) 0.047 ms 
B) 0.47 ms 
C) 0.47 s 
D)

Question 11

In RC and RL integrators and differentiators, transient time is equal to the:

Accepted Answer

A) pulse width. 
B) time constant. 
C) time constant times five. 
D) pulse width times five. 
A) pulse width. 
B) time constant. 
C) time constant times five. 
D) pulse width times five.

Question 12

The capacitor of an RC integrator charges to ________ if the input is a 30 V pulse with a pulse width equal to one time constant.

Accepted Answer

A) 26.0 V 
B) 29.4 V 
C) 19.0 V 
D) 28.5 V 
A) 26.0 V 
B) 29.4 V 
C) 19.0 V 
D) 28.5 V

Question 13

When the input pulse width to an RC integrator is much less than   the output approaches the
shape of the input.

Accepted Answer

A) True 
 B)False

Question 14

A pulse-waveform to DC convertor makes use of an integrator:

Accepted Answer

A) with a time constant shorter than the width of the input pulse. 
B) with a time constant much wider than the width of the input pulse. 
C) with an extremely large time constant. 
D) either B or C 
A) with a time constant shorter than the width of the input pulse. 
B) with a time constant much wider than the width of the input pulse. 
C) with an extremely large time constant. 
D) either B or C

Question 15

An RC integrating circuit is a basic high-pass filter with a pulse applied to it.

Accepted Answer

A) True 
 B)False

Question 16

What is one time constant in an integrating circuit if a   resistor is in series with a   capacitor?

Accepted Answer

A) 0.0235 ms 
B) 2.35 ms 
C) 0.00235 ms 
D) 235 ms 
A) 0.0235 ms 
B) 2.35 ms 
C) 0.00235 ms 
D) 235 ms

Question 17

If a square wave input produces 0 V output from an RC integrator, ________.

Accepted Answer

A) the resistor is shorted 
B) the capacitor is leaky 
C) the capacitor is open 
D) the resistor is open 
A) the resistor is shorted 
B) the capacitor is leaky 
C) the capacitor is open 
D) the resistor is open

Question 18

The capacitor of an RC integrator charges to ________ if the input is a 10 V pulse with a pulse width equal to six time constants.

Accepted Answer

A) 6.3 V 
B) 3.7 V 
C) 10 V 
D) 5 V 
A) 6.3 V 
B) 3.7 V 
C) 10 V 
D) 5 V

Question 19

What is VC at the end of the input pulse to an RC integrator if the input pulse is 12 V and the pulse width equals one time constant?

Accepted Answer

A) 7.59 V 
B) 4.41 V 
C) 12 V 
D) 0 V 
A) 7.59 V 
B) 4.41 V 
C) 12 V 
D) 0 V

Question 20

RC integrators can be used to convert a repetitive pulse waveform to a constant dc voltage equal to the average voltage of the waveform if:

Accepted Answer

A) τ is very large compared to tW. 
B) τ is equal to tW. 
C) τ is very small compared to tW. 
D) τ is five times tW. 
A) τ is very large compared to tW. 
B) τ is equal to tW. 
C) τ is very small compared to tW. 
D) τ is five times tW.

Exam 15: RC Circuits

What is the output voltage at the end of the input pulse to an RL integrator if the resistance is 1.2 k Ω, the inductor is 200 mH and the input is a 5 V, 1.2 ms pulse?

RC integrators can be used in timing circuits to set a specified time delay if the output is coupled to:

LC and RC integrators, with respect to input and output, perform exactly the same.

In an RL integrating circuit, the output is taken across the inductor.

What is VC at the end of the input pulse to an RC integrator if the resistance is the capacitance is 47 and the input is a 15 V, 470 ms pulse?

It takes a capacitor 5 time constants to nearly reach full charge.

The output from an RC integrator resembles the input if ________.

A given circuit using an RC integrator to turn on after 20 seconds now takes now takes much longer to turn on. What is the most probable cause?

The output of a differentiator circuit will reach the same maximum and minimum levels as the input as long as the time constant of the circuit is less than the width of the input pulse.

What is one time constant in an integrating circuit if a resistor is in series with a capacitor?

In RC and RL integrators and differentiators, transient time is equal to the:

The capacitor of an RC integrator charges to ________ if the input is a 30 V pulse with a pulse width equal to one time constant.

When the input pulse width to an RC integrator is much less than the output approaches the shape of the input.

A pulse-waveform to DC convertor makes use of an integrator:

An RC integrating circuit is a basic high-pass filter with a pulse applied to it.

What is one time constant in an integrating circuit if a resistor is in series with a capacitor?

If a square wave input produces 0 V output from an RC integrator, ________.

The capacitor of an RC integrator charges to ________ if the input is a 10 V pulse with a pulse width equal to six time constants.

What is VC at the end of the input pulse to an RC integrator if the input pulse is 12 V and the pulse width equals one time constant?

RC integrators can be used to convert a repetitive pulse waveform to a constant dc voltage equal to the average voltage of the waveform if:

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