Related Questions
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4
Which of the following capacitors is suitable for dc filter circuits?
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4
With double the number of turns by the same length and areaa the inductance is
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4
Which is considered as the effect of a dielectric material?
A. Increasing capacitance
B. Decreasing capacitance
C. Reducing the working voltage
D. Increasing the distance between the plates
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4
The graph between an alternating quantity and time is called
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4
Kirchhoff�s laws (KCL and KVL) are applicable to
C. DC as well as AC circuits
D. Passive networks alone
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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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4
When two pure sine waves of the same frequency and the same amplitude which are exactly 180� outof-phase are added togethera the result is
A. A wave with twice the amplitude
B. A wave with half the amplitude
D. A wave with twice the frequency
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4
What does a capacitor store?
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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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If a capacitor is rated for 200V dca what is its effective ac working voltage?
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In an ac wavea 30 degrees of phase is ___ of a cycle.
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Property of an electric circuit that dissipates electric energy
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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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The charging of a capacitor through a resistance follows what law?
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A three-by-threea series-parallel matrix of resistorsa all having the same ohmic valuea would have a net resistance of
A. One-third the value of a single resistor
B. Three times the value of a single resistor
C. The same value as a single resistor
D. Nine times the value of a single resistor
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What is the reciprocal of capacitance?
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For a linear circuita ___ voltage or current is used to calculate average power.
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For a parallel ACcircuita ___ is used as a reference phasor.
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In Norton�s theorema the short circuit current is obtained by
A. Opening the load terminals
B. Shorting the load terminals
C. Opening the voltage source
D. Shorting the voltage source
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4
What is the value of a carbon composition resistor with the following color code: Browna whitea orangea red
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4
What is the most common non-sinusoidal waveform?
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Which of the following is a preferred resistor value?
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For maximum power transfera what is the relation between load resistance RL and internal resistance R of the voltage source?
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4
Rationalizing the denominator of a complex number means
A. Eliminating the j component in the denominator
B. Adding j component in the denominator
C. Eliminating the j component in the numerator
D. Adding j component in the numerator
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4
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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4
What is the resonant frequency of a circuit when L of 3 microhenrys and C of 40 picofarads are in series?
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The average value of a triangular or sawtooth wave is _____ times its peak value.
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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
The ratio between the active power and the apparent power of a load in an ac circuit is called
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4
The second strip of an electronic resistor color-code represents
B. The second digit of the value