Electrical Engineering

Electrolytic capacitors must be connected into a circuit such that:

Electrolytic capacitors must be connected into a circuit such that:

Electrolytic capacitors must be connected into a circuit such that:
 
  A) reversal of polarity does not happen.
  B) positive lead to positive voltage; negative lead to negative voltage.
  C) voltage rating m

Johnni   42   1 Reply

ecarvallo1

In a transistor amplifier the input ac signal and the output of the amplifier must be connected in a ...

In a transistor amplifier the input ac signal and the output of the amplifier must be connected in a ...

In a transistor amplifier the input ac signal and the output of the amplifier must be connected in a way that not does affect the dc bias voltage. This is accomplished by using a(n) ________ capacitor.
 
  A) coupling B) small va

salsathief   105   1 Reply

ecarvallo1

When capacitors are connected in parallel, their total capacitance act like:

When capacitors are connected in parallel, their total capacitance act like:

When capacitors are connected in parallel, their total capacitance act like:
 
  A) resistance connected in parallel. B) resistance connected in series.
  C) resistance connected in series-parallel. D) all of these.

applegatedogs   60   2 Replies

applegatedogs

If an uncharged capacitor, a resistor, a switch and a 12 V battery are connected in series, what is ...

If an uncharged capacitor, a resistor, a switch and a 12 V battery are connected in series, what is ...

If an uncharged capacitor, a resistor, a switch and a 12 V battery are connected in series, what is the voltage across the capacitor at the instant the switch is closed?
 
  A) 6 V B) 0 V C) 12 V D) 24 V

meganchambers8   64   1 Reply

Icgcyvfiifctcit

If an uncharged capacitor, a resistor, a switch and a 12 V battery are connected in series, at ...

If an uncharged capacitor, a resistor, a switch and a 12 V battery are connected in series, at ...

If an uncharged capacitor, a resistor, a switch and a 12 V battery are connected in series, at approximately what time will the capacitor reach full charge?
 
  A) 12  R  C B) 5  R  C
  C) R  C

SapphireSmoke   69   1 Reply

ebwilliams25

What is the capacitance that stores 1.175 C of charge and drops 25 V?

What is the capacitance that stores 1.175 C of charge and drops 25 V?

What is the capacitance that stores 1.175 C of charge and drops 25 V?
 
  A) 47 F B) 4.7 F C) 0.047 F D) 0.47 F

yxc47   75   1 Reply

tkelems2012

How much charge is stored in a 0.47 F capacitor that drops 18 V?

How much charge is stored in a 0.47 F capacitor that drops 18 V?

How much charge is stored in a 0.47 F capacitor that drops 18 V?
 
  A) 84.6 C B) 8.46 C C) 0.846 C D) 846 C

alexisangelique   41   1 Reply

mikeman2332

If a 0.047 F, 0.047 F and 0.47 F capacitor are connected in series across a 25 V source, the total ...

If a 0.047 F, 0.047 F and 0.47 F capacitor are connected in series across a 25 V source, the total ...

If a 0.047 F, 0.047 F and 0.47 F capacitor are connected in series across a 25 V source, the total capacitance equals ________ and each 0.047 F capacitor drops ________.
 
  A) 0.022 F, 11.9 V B) 0.564 F, 11.9 V C) 0.022 F, 25 V

cattyson   53   1 Reply

ebwilliams25

There is often a capacitor connected to ground between the bridge rectifier and the voltage ...

There is often a capacitor connected to ground between the bridge rectifier and the voltage ...

There is often a capacitor connected to ground between the bridge rectifier and the voltage regulator in a power supply. In order to limit surge current a ________ is inserted between the bridge and the regulator.
 
  A) a shunt

Wutwut12   112   1 Reply

Wilkinson

What is one time constant of a 47 F capacitor in series with a 120 k resistor?

What is one time constant of a 47 F capacitor in series with a 120 k resistor?

What is one time constant of a 47 F capacitor in series with a 120 k resistor?
 
  A) 5.64 s B) 54.6 s C) 564 ms D) 0.564 ms

jessiecraane   36   1 Reply

dkeysdanie

How much voltage is dropped across a 150 F capacitor after 3.33 seconds if it is charged by a 50 V ...

How much voltage is dropped across a 150 F capacitor after 3.33 seconds if it is charged by a 50 V ...

How much voltage is dropped across a 150 F capacitor after 3.33 seconds if it is charged by a 50 V source through a 22 K resistor?
 
  A) 31.8 V B) 49 V C) 43.3 V D) 47.5 V

Brapbrap   19   2 Replies

Brapbrap

If a 0.047 F capacitor operates at 220 kHz, XC equals ________.

If a 0.047 F capacitor operates at 220 kHz, XC equals ________.

If a 0.047 F capacitor operates at 220 kHz, XC equals ________.
 
  A) 1.54 k B) 154  C) 15.4  D) 15.4 k

jaypatel432   38   1 Reply

saundrasmith243

How long will it take for a 22 F capacitor to completely charge through a 47 k resistor?

How long will it take for a 22 F capacitor to completely charge through a 47 k resistor?

How long will it take for a 22 F capacitor to completely charge through a 47 k resistor?
 
  A) 8.272 s B) 2.068 s C) 5.17 s D) 1.034 s

Wutwut12   32   1 Reply

leg17

At what frequency is a 0.001 F capacitor operating if its reactance is 45 k?

At what frequency is a 0.001 F capacitor operating if its reactance is 45 k?

At what frequency is a 0.001 F capacitor operating if its reactance is 45 k?
 
  A) 3.54 MHz B) 35.4 kHz C) 354 kHz D) 3.54 kHz

sopmit   42   1 Reply

yuenc

If a 47 F capacitor is connected to a 20 V, 400 Hz source, the current is ________.

If a 47 F capacitor is connected to a 20 V, 400 Hz source, the current is ________.

If a 47 F capacitor is connected to a 20 V, 400 Hz source, the current is ________.
 
  A) 425 A B) 0.851 A C) 2.36 A D) 8.51 A

emalay516   85   1 Reply

Icgcyvfiifctcit

When connecting a large electrolytic capacitor to a circuit with a 100 VDC source, place the ...

When connecting a large electrolytic capacitor to a circuit with a 100 VDC source, place the ...

When connecting a large electrolytic capacitor to a circuit with a 100 VDC source, place the negative end of the capacitor ________.
 
  A) in either position; the polarity is not important
  B) towards the negative sid

Wutwut12   33   1 Reply

Princessklo

Electrolytic capacitors differ from many other capacitors in construction in that they are:

Electrolytic capacitors differ from many other capacitors in construction in that they are:

Electrolytic capacitors differ from many other capacitors in construction in that they are:
 
  A) smaller. B) polarized. C) larger. D) sensitized.

lindseyb1220   60   1 Reply

selica

When capacitors are connected in series, their total capacitance act like:

When capacitors are connected in series, their total capacitance act like:

When capacitors are connected in series, their total capacitance act like:
 
  A) resistance connected in series-parallel. B) resistance connected in parallel.
  C) resistance connected in series. D) all of these.

applegatedogs   47   1 Reply

mikeman2332

The time constant of a capacitor is:

The time constant of a capacitor is:

The time constant of a capacitor is:
 
  A) directly proportional to the resistance in the circuit.
  B) directly proportional to the capacitance in the circuit.
  C) the time required to charge to 63 or disch

cattyson   54   2 Replies

cattyson

The time constant for a capacitor for each time period is:

The time constant for a capacitor for each time period is:

The time constant for a capacitor for each time period is:
 
  A) a constant factor. B) 63 of the increase in value.
  C) 37 of the decrease in value. D) all of these.

ibukunsulie85   54   1 Reply

Xuantunich

Reactive power (Pr) in a capacitor is defined as the rate at which a capacitor stores or returns ...

Reactive power (Pr) in a capacitor is defined as the rate at which a capacitor stores or returns ...

Reactive power (Pr) in a capacitor is defined as the rate at which a capacitor stores or returns energy and is measured in:
 
  A) watts reactive. B) volt-ampere reactive.
  C) volts per time constant. D) current per ti

SapphireSmoke   85   1 Reply

Gax_52912

In a capacitive AC circuit, the phase relationship between the voltage and the current is such that ...

In a capacitive AC circuit, the phase relationship between the voltage and the current is such that ...

In a capacitive AC circuit, the phase relationship between the voltage and the current is such that the:
 
  A) current is 180 degrees out of phase with voltage.
  B) current is leading the voltage.
  C) volta

Kimstudies   73   1 Reply

Helverson28

A common use for electrolytic capacitors found in power supplies is ________.

A common use for electrolytic capacitors found in power supplies is ________.

A common use for electrolytic capacitors found in power supplies is ________.
 
  A) blocking DC B) decoupling C) passing AC D) filtering

Coco   37   1 Reply

skalass

A test instrument designed to be used for the testing of capacitors is the ________.

A test instrument designed to be used for the testing of capacitors is the ________.

A test instrument designed to be used for the testing of capacitors is the ________.
 
  A) analog multimeter B) LCR Meter C) digital multimeter D) oscilloscope

Mroche   77   1 Reply

tysonras

A commonplace use for capacitors in electronics is to:

A commonplace use for capacitors in electronics is to:

A commonplace use for capacitors in electronics is to:
 
  A) block AC voltages. B) pass both AC and DC voltages.
  C) pass DC voltages only. D) block DC voltages.

Mroche   69   1 Reply

Helverson28

Upon checking the voltage output of a power supply with an oscilloscope, you notice an unusually ...

Upon checking the voltage output of a power supply with an oscilloscope, you notice an unusually ...

Upon checking the voltage output of a power supply with an oscilloscope, you notice an unusually large amount of ripple. What could possibly be the problem?
 
  A) shorted filter capacitor B) shorted load
  C) open filt

Madam   57   1 Reply

Ashleyroshell

With three capacitors in series, the current lags the voltage by:

With three capacitors in series, the current lags the voltage by:

With three capacitors in series, the current lags the voltage by:
 
  A) 30 degrees. B) 45 degrees. C) 90 degrees. D) none of the above.

ibukunsulie85   22   2 Replies

ibukunsulie85

A 65 Vrms signal is applied to a 10 F capacitor. What is the total peak current?

A 65 Vrms signal is applied to a 10 F capacitor. What is the total peak current?

A 65 Vrms signal is applied to a 10 F capacitor. What is the total peak current?
 
  A) 6.5 kA B) 153 mA
  C) 6.5 A D) not enough information

Mroche   82   1 Reply

saundrasmith243

What is the small amount of power lost in a capacitive circuit due to the internal resistance of the ...

What is the small amount of power lost in a capacitive circuit due to the internal resistance of the ...

What is the small amount of power lost in a capacitive circuit due to the internal resistance of the capacitors?
 
  A) reactive power B) true power
  C) ideal power D) instantaneous power

salsathief   43   1 Reply

Xuantunich

The removal of high frequency transient voltages with a capacitor is called:

The removal of high frequency transient voltages with a capacitor is called:

The removal of high frequency transient voltages with a capacitor is called:
 
  A) ac blocking. B) decoupling. C) bypassing. D) coupling.

emalay516   38   1 Reply

Amc3010

The total current in an RC circuit always leads the source voltage. (True or false?)

The total current in an RC circuit always leads the source voltage. (True or false?)

The total current in an RC circuit always leads the source voltage.
 
  Indicate whether the statement is true or false

Johnni   58   1 Reply

Jmassey95

An RC circuit can be used as a filter to eliminate selected frequencies. (True or false?)

An RC circuit can be used as a filter to eliminate selected frequencies. (True or false?)

An RC circuit can be used as a filter to eliminate selected frequencies.
 
  Indicate whether the statement is true or false

riveraes   178   1 Reply

Sauleha

The phasor combination of XC and R is called Z (True or false?)

The phasor combination of XC and R is called Z (True or false?)

The phasor combination of XC and R is called Z.
 
  Indicate whether the statement is true or false

thebeagle96   103   1 Reply

yilongchang

The phase angle of an RC circuit varies inversely with frequency. (True or false?)

The phase angle of an RC circuit varies inversely with frequency. (True or false?)

The phase angle of an RC circuit varies inversely with frequency.
 
  Indicate whether the statement is true or false

meganchambers8   70   2 Replies

meganchambers8

Power factor values close to 0 denotes an RC circuit with mostly true power. (True or false?)

Power factor values close to 0 denotes an RC circuit with mostly true power. (True or false?)

Power factor values close to 0 denotes an RC circuit with mostly true power.
 
  Indicate whether the statement is true or false

riveraes   36   1 Reply

Astalina

A VA rating is more relevant when judging the current delivery capacity for a given signal source. ...

A VA rating is more relevant when judging the current delivery capacity for a given signal source. ...

A VA rating is more relevant when judging the current delivery capacity for a given signal source.
 
  Indicate whether the statement is true or false

jkidane1829393   45   1 Reply

Jmassey95

A leaky capacitor can be equated as a capacitor with a resistor being placed in series with it. ...

A leaky capacitor can be equated as a capacitor with a resistor being placed in series with it. ...

A leaky capacitor can be equated as a capacitor with a resistor being placed in series with it.
 
  Indicate whether the statement is true or false

yxc47   73   1 Reply

Ashleyroshell

If there is 10 VRMS across the resistor and 10 VRMS across the capacitor in a series RC circuit, ...

If there is 10 VRMS across the resistor and 10 VRMS across the capacitor in a series RC circuit, ...

If there is 10 VRMS across the resistor and 10 VRMS across the capacitor in a series RC circuit, then the source voltage equals ________.
 
  A) 28.3 VRMS B) 20 VRMS C) 14.1 VRMS D) 10 VRMS

jaypatel432   100   1 Reply

dkeysdanie

In a X10 oscilloscope probe input resistance is ________ and input capacitance is ________ by a ...

In a X10 oscilloscope probe input resistance is ________ and input capacitance is ________ by a ...

In a X10 oscilloscope probe input resistance is ________ and input capacitance is ________ by a factor of 10.
 
  A) decreased, increased B) increased, decreased
  C) increased, increased D) decreased, decreased

apich   61   1 Reply

Netsirk

A power factor of 1 indicates that the circuit phase angle is ________.

A power factor of 1 indicates that the circuit phase angle is ________.

A power factor of 1 indicates that the circuit phase angle is ________.
 
  A) 45 B) 90 C) 180 D) 0

Raider49   52   1 Reply

Hadajahpope