# Q1:What is the phase shift between the voltage across the resistor and the voltage from the source?

A
B
C
VR lags VS by 73°
D
VR lags VS by 17°

A
459 A
B
647 A
C
1.31 mA
D
1.85 mA

A electrolytic
B plastic film
C oxide casing
D waxed paper

A
0.2
B
0.5
C
0.02
D
0.003

A first
B third
C fifth
D seventh

# Q6:You could increase the time constant of an RC circuit by

A adding a resistor in parallel with the circuit resistance
B adding a capacitor in parallel with the circuit capacitance
C increasing the amplitude of the input voltage
D exchanging the position of the resistor and capacitor in the circuit

A R
B I
C C
D V

A 0.2 ohms
B 3.5 ohms
C 4.6 ohms
D 13 ohms

A zero
B moderate
C infinite
D cannot tell

A 294 ps
B 13.5 ms
C 21.25 ms
D 2.16 Gs

# Q11: What is the dielectric constant for ceramic?

A between 6 and 8000
B 5.0
C between 5 and 1000
D 3000

A 63.2
B 36.8
C 13.5
D 5.0

# Q13: As a capacitor is being charged, the voltage across its terminals will:

A increase
B decrease
C remain the same
D oppose the source

# Q14: For a given charge difference, electrostatic field strength varies according to:

A plate differential
B plate area
C plate distance
D dielectric quantity

# Q15: The material used between the plates of a capacitor is called its:

A insulation material
B dielectric material
C separation material
D plate-divider material

# Q16:What circuit has the following frequency response?

A bandpass filter
B high-pass filter
C low-pass filter
D integrator

A bandpass
B low-pass
C high-pass
D band-stop

# Q18: A practical capacitor

A is a short to dc
B looks like a capacitor in parallel with a resistor
C is an open to ac
D stores energy in a magnetic field

# Q19: If a charged capacitor is disconnected from a circuit, it will:

A immediately discharge
B recharge
C remain charged
D leak the charge

A
10
B
100
C
1 k
D
1 M

# Q21: A capacitor and an output resistor form a series circuit with a square wave applied. The circuit is:

A an integrator
B a differentiator
C a multiplier
D a divider

A alphanumeric
B color dabs
C standard
D white print

# Q23: Capacitive reactance values connected in series offer

A
an increase in total XC
B
a decrease in total XC
C
no change in total XC
D total opposition to voltage in the circuit

# Q24:What will a 1 F capacitor store?

A one coulomb of charge
B
6.24 x 1012 electrons
C one volt
D
one A of current

A
0.066 F
B
0.9 F
C
65.97 pF
D
900 pF

# Q26: The quantity that represents an ideal capacitor dissipating 0 W of power is

A instantaneous power
B true power
C reactive power
D resistive power

A impedance
B inductance
C reactance
D resistance

# Q28: When a circuit consists of a capacitor and a resistor in series with a voltage source, and the voltage across the resistor is zero, then the capacitor is:

A charging
B discharging
C fully charged
D fully discharged

A
10,000 pF
B
1000 pF
C
1000 F
D
10,000 F

# Q30: As a capacitor is being charged, current flowing into the capacitor will:

A increase
B decrease
C remain the same
D cannot tell

# Q31: What do variable capacitors use for dielectric?

A ceramic, electrolytic, mica, or paper
B air, ceramic, mica, or plastic
C ceramic, paper, plastic, or mica
D mica, ceramic, plastic, or electrolytic

A
6.8 mW
B
9.8 mW
C
12.8 mW
D
15.8 mW

A 1 F
B 12 F
C 0.615 F
D 8 F

# Q34: The strength of an electric field at a given point is proportional to the potential difference on the plates and inversely proportional to the:

A plate separation
B negative plate only
C field strength
D charge difference

# Q35: A resistor and an output capacitor form a series circuit with a square wave applied. The circuit is:

A an integrator
B a differentiator
C a multiplier
D a divider

A 214 ohms
B 313 ohms
C 414 ohms
D 880 ohms

# Q37: What is wrong with a leaky capacitor?

A It is open.
B It is shorted.
C The dielectric resistance has increased.
D The dielectric resistance has decreased.

A Air
B Paper
C Mica
D Oil

A conductors
B semiconductors
C inductors
D dielectrics

# Q40: How is ac current related to ac voltage in a purely capacitive circuit?

A AC current is 0.707 of the ac voltage.
B AC current lags ac voltage.
C AC current is 0.637 of the ac voltage.
D AC current leads ac voltage.

# Q41: A capacitor stores energy within a dielectric between the conducting plates in the form of:

A a magnetic field
B positive voltage
C negative voltage
D an electric field

# Q42: In a capacitive circuit, current flow is limited to

A charging periods
B discharging periods
C neither charging periods nor discharging periods
D both charging periods and discharging periods

# Q43: If the dielectric constant of a capacitor is decreased, then its capacitance will:

A increase
B decrease
C remain the same
D be destroyed

# Q44: A source voltage across a capacitor will:

A lead the current by 90 degrees
B lead the current by 180 degrees
C lag the current by 90 degrees
D lag the current by 180 degrees

A 22 ms
B 69 ms
C 345 ms
D 420 ms

A 0 VAR
B
691 VAR
C
44.23 mVAR
D
1.45 kVAR

A 37.8 V
B 38 V
C 63 V
D 101 V

# Q48: Which of the following determines the capacitance of a capacitor?

A Plate area, dielectric strength, and plate separation
B Voltage rating, dielectric constant, and temperature coefficient
C Temperature coefficient, plate area, and plate separation
D Plate area, dielectric constant, and plate separation

A 4.7 ohms
B 29.5 ohms
C 34 ohms
D 213 ohms

A 14 mW
B 36 mW
C 40 mW
D 114 mW

# Q51: Power stored from the source and then returned to the source is called:

A apparent power
B impedance power
C reactive power
D true power

# Q52:What is this circuit?

A bandpass filter
B high-pass filter
C low-pass filter
D differentiator

A 0.0 W
B 0.8 W
C 1.0 W
D 1.25 W

# Q54: If an open capacitor is checked with an ohmmeter, the needle will:

A stay on zero
B stay on infinity
C move from zero to infinity
D move from infinity to zero

A 3.3 V
B 7.4 V
C 6.6 V
D 9.4 V

A 4.57 mA
B 9.327 mA
C 11.570 mA
D 13.830 mA

A
5928
B
2000
C
1902
D
1798

A 5.0 V
B 12.8 V
C 13.5 V
D 20 V

A Q = CV
B C = QV
C
D V = IR

A
1192
B
843
C
723
D
511

A
60 pF
B
60 F
C
16.67 mF
D
37.5 mF

A
B
VS × I
C
I2R
D
VT × RT

A
4 F
B
250 F
C
4,000 F
D
250 F

A 7.07 V
B 1.11 V
C 111 mV
D 7.07 mV

A 1 volt
B 3 volts
C 5 volts
D 7 volts

# Q66: When is a capacitor fully charged?

A
when the voltage across its plates is of the voltage from ground to one of its plates
B when the current through the capacitor is the same as when the capacitor is discharged
C when the voltage across the plates is 0.707 of the input voltage
D when the current through the capacitor is directly proportional to the area of the plates

# Q67: A capacitor's rate of charge is considered:

A magnetic
B a current block
C linear
D exponential

A 318 pF
B 2 nF
C 3.18 F
D 2 F

A 22 ms
B 69 ms
C 345 ms
D 440 ms

A bandpass
B low-pass
C high-pass
D band-stop

A 45 V
B 50 V
C 55 V
D 60 V

A 27.3 degrees
B 62.7 degrees
C –27.3 degrees
D –62.7 degrees

# Q73: In a purely capacitive circuit,

A current leads voltage by 90°
B voltage leads current by 90°
C current lags voltage by 90°
D current and voltage have a phase relationship of 0°

# Q74: Which of the following statements is true?

A The voltage to which a capacitor is charged can change instantaneously.
B The current in a capacitive circuit takes time to change.
C A fully charged capacitor appears as a short to dc current.
D An uncharged capacitor appears as a short to an instantaneous change in current.

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