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4
The usual load of a dc circuit is a/an
D. Both inductor and capacitor
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The factor 0.707for converting peak to rms applies only to
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4
Parallel resonant circuit is sometimes called as
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The distance between the capacitor plates increases two timesa then its capacitance
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4
Which of the following is not a factor affecting dielectric strength?
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4
The ratio of W/VA in an ac circuit means
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4
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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4
Which of the following does not generally affect the value of a capacitor?
A. The dielectric material used
B. The surface area of the plates
C. The thickness of the dielectric
D. The voltage applied to the plate
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4
According to Gauss theorema flux can be equated to
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4
Which of the following describes the action of a capacitor?
A. Stores electrical energy
B. Opposes changes in current flow
C. Creates a dc resistance
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4
Conventional flow assumes charges flow from
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4
A term used to express the amount of electrical energy stored in electrostatic field.
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What is the peak factor for alternating current or voltage varying sinusiodally?
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4
The ohmic value of a resistor with negative temperature coefficient
A. Increases with increasing temperature
B. Increase with decreasing temperature
C. Stays unchanged with temperature change
D. Stays unaffected even with increasing temperature
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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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4
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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4
What dielectric is generally employed by a variable capacitor?
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What does a capacitor store?
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Which of the following is not a factor affecting capacitance oor?
C. Distance between plates
D. Dielectric material used
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4
What theorem is usually used in the analysis of transistor circuit?
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4
What is the reading of an ohmmeter for a shorted capacitor?
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4
A capacitor is used to
D. Short the voltage source
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4
The temperature-resistance coefficient of pure gold is
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4
A capacitor is basically constructed of
A. Two conductors separated by a dielectric
B. Two dielectric separated by a conductor
C. Conductors and dielectric
D. Conductors and semiconductors
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4
The current is ____ times the maximum current at half-power points of a resonance curve.
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4
What is the hot resistance of a 100 Wa 220 V incandescent lamp?
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If two resistances of 9 and 6 are connected in parallela the total resistance is
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4
Form its definitiona the unit of electric fielda is the N/C and equivalent unit of is the
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Refers to the outward-curving distortion of the lines of force near the edges of two parallel metal plates that form a capacitor.
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The ratio of maximum value to the effective value of an alternating quantity is called