Related Questions
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4
The hot resistance of an incandescent lamp is about ___ times its cold resistance.
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4
For multi-plate capacitora capacitance is proportional to
A. Number of plates less one(n ± 1)
B. Number of plates plus one(n + 1)
C. Number of plates less two(n - 2)
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4
If the capacitance of mica capacitor is 5 times the capacitcitora then the relative permittivity of mica is
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4
The electric field strength between capacitor plates has a unit
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4
Liquids that are good conductors because of ionization are called
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4
The second strip of an electronic resistor color-code represents
B. The second digit of the value
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4
A law which states that when a constant electromotive force is applied to a circuit consisting of a resistor and capacitor connected in seriesa the time taken for the potential on the plates of the capacitor to rise to any given fraction of its final value depends only on the product of capacitance and resistance.
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4
Why are inductance and capacitance not relevant in a dc circuit?
A. Because it is a simple circuit
B. Because dc circuits require only resistance as load
C. Because they do not exist in a dc circuit
D. Because frequency of dc is zero
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4
Property of an electric circuit that dissipates electric energy
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What theorem is usually used in the analysis of transistor circuit?
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Which of the following materials has the lowest dielectric strength?
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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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4
The power factor of a certain circuit in which the voltage lags behind the current is 80 %. To increase the power to 100 %a it is necessary to add ___ to the circuit.
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If three 9 mH inductors are connected in parallel without mutual inductance then the total i nductance is
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4
A 5 F capacitor charge to 5V has a stored charge equal to
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4
What refers to such work at very low temperaturesa near absolute zero?
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A real current source has
A. Infinite internal resistance
B. Zero internal resistance
C. Large internal resistance
D. Small internal resistance
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4
Which of the following is not considered a physical factor affecting resistance?
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4
What is the reciprocal of capacitance?
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4
What is the cross-sectional are of a conductor whose diameter is 0.001 inch?
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4
Tungsten filament of bulbs has a hot resistance higher than its cold resistance due to its temperature coefficient which is
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4
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
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4
Which of the following is neither a basic physical law nor deliverable from one?
D. Kirchhoff�s second law
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What is the total resistance of a two equal valued resistors in series?
A. The difference of both
D. The sum of their reciprocals
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Which of the following is a preferred resistor value?
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4
Which of the following elements is active?
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4
What is the rms value of a square wave?
B. Equals its peak-to-peak value
C. Peak divided by square root of two
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4
What is the other name of relative permittivity?
D. Specific inductance capacity
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If two resistances of 9 and 6 are connected in parallela the total resistance is
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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.