Related Questions
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4
In a rectangular wavea the peak factor is
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The average value of a triangular or sawtooth wave is _____ times its peak value.
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4
Which of the following is not considered a physical factor affecting resistance?
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4
Which of the following is a preferred resistor value?
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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
When voltage is applied across a ceramic dielectric the electrostatic field p roduced is 50 times greater than air dielectric. The dielectric constant of ceramic therefore is
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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
The impedance in the study of electronics is represented by resistan
C. Inductance and capacitance
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4
Electron flow assumes charges flow from
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4
Which one of the following elements serves as a protection against overload?
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Which of the following is a way of decreasing mutual inductance?
A. Moving the coils closer
B. Moving the coils apart
C. Decreasing the number of turns of either coil
D. Increasing the number of turns of either coil
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4
What is a closed path made of several branches of the network called?
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4
In a circuita an active element is one which
C. Both supplies and receives energy
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The farad is not equivalent to which of the following combination of units
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Which of the following dielectric materials makes the highest-capacitance capacitor?
B. Barium-strontium titanite
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4
Inductive reactance applies only to sine waves because it
A. Increases with lower frequencies
B. Increases with lower inductance
C. Depends on the factor 2
D. Decreases with higher frequencies
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4
What is the peak factor for alternating current or voltage varying sinusiodally?
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4
A factor that states how much the resistance changes for a change in temperature?
C. Coefficient of temperature change
D. Temperature coefficient of resistance
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4
A capacitor requires 12 C of charge to raise its potential of 3 V. What is the capacitance of the capacitor?
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If the inductance is decreaseda the impedance of the circuit containing a resistor a capacitor and an inductor connected in series to an ac source
C. Decreases or increases
D. Decreasesa increases or remains the same
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4
In dividing or multiplying phasor quantitiesa ___ form is used.
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4
At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 F?
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4
An open inductor has
A. Zero resistance and infinite inductance
B. Infinite resistance and zero inductance
C. Infinite resistance and infinite inductance
D. Zero resistance and zero inductance
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4
A capacitance of 0.05 F equals
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If resonant frequency is 10 kHz and quality factor is 50a then
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What is the most convenient way of achieving large capacitance?
A. By using multiplate construction
B. By using air as dielectric
C. By decreasing distance between plates
D. By using dielectric of low permittivity
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4
A series RLCcircuit consists of a 10 resistor in series with L = 10 Ha and C= 100 F. Determine a new value of Ia for which the resonant frequency is one ±half the original value.
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4
Of the equivalent combination of unitsa which one is not equal to watt?
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4
The value of temperature coefficient ( ) is dependent upon
A. The nature of material and temperature
B. The length of material
C. The cross-sectional area of the material
D. The volume of the material
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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.