A capacitor is used to
Block dc current
Pass dc current
Open voltage source
Short the voltage source
Correct Answer :
A. Block dc current
Related Questions
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Near the final maximum value of current
At midvalue of current
At half-power points
After one time constant
If resonant frequency is 10 kHz and quality factor is 50a then
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XL= is 50a000
R is 50
XC= is 50a000
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Coefficient of temperature change
Temperature coefficient of resistance
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Parallel resonance
Current magnification
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1000 to 10000
10 to 10 M
2.7 to 2.7G
Resistor with colored bands in the body
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Area of plates
Number of plates
Distance between plates
Dielectric material used
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Plastic
Air
Mica
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For series capacitorsa total charge is
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Equal to the charge of either capacitors
Equal to the product of the charges
The quotient of the charges
Which of the following capacitors is suitable for dc filter circuits?
Mica
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Liquids that are good conductors because of ionization are called
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Bases
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Internal bleeding
Shorter useful life
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For parallel capacitorsa total charge is
The sum of individual charges
Equal to the charge of either capacitors
Equal to the product of the charges
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The graph between an alternating quantity and time is called
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Waveform
A plot
Another term for superconductor.
Generic conductor
Ultraconductor
Cryotron
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The length of material
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In an ac circuit with inductive reactance ?, the
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Voltage across the inductance must be 90� out o f-phase witht he applied voltage
Current through the inductance lags its induced voltage by 90�
Current through the inductance and voltage across it are180� outof-phase
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Polar
Rectangular
Trigonometric
Exponential
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Positive
Zero
Infinite
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Voltage curve
Gain curve
Power curve
Resonance curve
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Greater than the largest capacitor
Smaller than the largest capacitor
Smaller than the smallest capacitor
Greater than the smallest capacitor
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Reciprocity theorem
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Increases four times
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Series LCcircuit
A resonant circuit
A non-resonant circuit
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