Related Questions
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The distance between the capacitor plates increases two timesa then its capacitance
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What is the temperature coefficient of the resistance Eureka?
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The ___ of an alternating quantity is defined as the fractional part of a period or cycle through which the quantity has advanced from selected origin.
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With double the number of turns by the same length and areaa the inductance is
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A trimmer is a variable capacitor in which capacitance is varied by changing the
C. Distance between plates
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A gang capacitor is a variable capacitor in which capacitance is varied by changing the
D. Distance between plates
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At what frequency will the current in a series RLCcircuit reach its maximum value for an applied voltage of 15 V with R = 500 a L = 100 H and C= 0.001 F?
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A trigger circuit consisting of a capacitor of 0.01 F is connected in series with a resistor. If the circuit requires 100 Vdcto operatea determine the value of the resistor when time constant is 0.009s.
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What capacitance exists not through design but simply because two conducting surfaces are relatively close to each other?
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In calculating maximum instantaneous power ___ voltage or current is used.
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Barium-strontium titanite dielectric material is also called
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The capacitor opposes any change in voltage across it by
A. Passing a voltage proportional to the rate of change of current
B. Acting as a short circuit at time equal to zero
C. Passing a current proportional to the rate of change of voltage
D. Acting as a short circuit at time equal to infinity
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4
The reason why alternating current can induce voltage is
A. It has high peak value
B. It has a stronger magnetic field than direct current
C. It has a constant magnetic field
D. It has a varying magnetic field
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An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?
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Which of the following capacitors are used only in dc circuits?
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Loop currents should be assumed to flow in which direction
D. Either B or C arbitrarily selected
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The wavelength of an alternating waveform depends upon the ___ of the variation.
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In the 5-band method of capacitor color codinga the first band indicates
A. Temperature coefficient
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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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What increases the resistance of wire at high frequencies?
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What determines the magnitude of electric current?
A. The rate at which electrons are produced
B. The type of material used
C. The current carrying capacity of the circuit
D. The rate at which electrons pass a given point
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What is the form factor of a triangular wave?
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A switch designed to have low capacitance between its terminal when open.
C. Anticapacitance switch
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Which of the following is neither a basic physical law nor deliverable from one?
D. Kirchhoff�s second law
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Which of the following is the most popular waveform?
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The reactance curve is a plot of frequency versus _____ for a series RLCcircuit
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The capacitance of a capacitor is ___ relative permittivity.
A. Directly proportional to
B. Inversely proportional to
D. Inversely proportional to the square of
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In a resonant circuita if Q ? 10 resonant frequency _______ bandwidth.
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When the net reactance in a series coil-capacitor circuit is zero at frequency fa the nature of its reactance of frequency 2f is
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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.