Related Questions
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4
How many degrees of phase represents one full cycle?
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A capacitor consists of two
C. Conductors separated by a dielectric
D. Dielectric separated by a conductor
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Which of the following represents the energy stored in a cap
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What is the conductance of a circuit having three 10 resistors in parallel?
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What is the reciprocal of quality factor?
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Which of the following has negative temperature coefficient?
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4
A gang capacitor is a variable capacitor in which capacitance is varied by changing the
D. Distance between plates
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Thevenin�s theorem is what form of an equivalent circuit?
C. Both current and voltage
D. Neither current nor voltage
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When the movable plates of a gang capacitor completely overlap the fixed platesa the capacitance of the capacitor is
A. Halfway between maximum and minimum
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In calculating maximum instantaneous power ___ voltage or current is used.
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A capacitor of 0.5 F charged to 220 V is connected across an uncharged 0.5 F capacitor. What is the voltage across each capacitor?
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What is the total effective capacitance of two 0.25 F capacitors connected in series?
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The reactance curve is a plot of frequency versus _____ for a series RLCcircuit
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An inductive load always has a ___ power factor
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Effects of capacitance
A. It opposes any change in the amount of voltage
B. Voltage is lagged behind the current by a quarter cycle
C. Electric energy is stored in the capacitor in the form of electrostatic field
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A capacitance of 6 ��F means
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Electron flow assumes charges flow from
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Which of the following materials has the lowest dielectric strength?
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Transient period is considered over after
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And ideal current source has an internal conductance of _____ siem
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Which of the following is a preferred resistor value?
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When two coils of identical reactance are in parallel without mutual inductancea the reactance of the combination is ___ the reactance of each coil.
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In an ac circuit with inductive reactance ?, the
A. Phase angle of the circuit is always 45�
B. Voltage across the inductance must be 90� out o f-phase witht he applied voltage
C. Current through the inductance lags its induced voltage by 90�
D. Current through the inductance and voltage across it are180� outof-phase
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Which of the following is the peakiest?
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Which of the following is also known as antiresonant circuit?
A. Parallel resonant circuit
B. Series resonant circuit
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If a multiplate capacitor has 10 platesa each of area 10 cm2a then
A. 10 capacitors will be in parallel
B. 10 capacitors will be in series
C. 9 capacitors will be in parallel
D. 9 capacitors will be in series
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The voltage cannot be exactly in phase with the current in a circuit that contains
C. Inductance and capacitance
D. Inductancea capacitance and resistance
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What is the other name of relative permittivity?
D. Specific inductance capacity
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An open resistor when checked with an ohmmeter reads
C. High but within the tolerance
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When two unequal values of resistors are connected in parallel across a dc sourcea greater current flows through the
C. Higher wattage resistance
D. Lower wattage resistance