The farad is not equivalent to which of the following combination of units
CV2
C2/J
C/V
J/V2
Correct Answer :
A. CV2
Related Questions
Which of the following is the peakiest?
Square wave
Sinusoidal wave
Triangular wave
Rectangular wave
Inductive reactance applies only to sine waves because it
Increases with lower frequencies
Increases with lower inductance
Depends on the factor 2
Decreases with higher frequencies
What is a rotating vector whose projection can represent either current or voltage in an ac circuit?
Polar diagram
Scalar quantity
Velocity
Phasor
The charge in the capacitor is stored at the
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Dielectric
Air
An intermittent and non-symmetrical alternating current like that obtained from the secondary winding of an induction coil
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Inductive current
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A factor that states how much the resistance changes for a change in temperature?
Resistivity
Specific resistance
Coefficient of temperature change
Temperature coefficient of resistance
Series resonance occurs when
XL= XC
XL= R
Z = R
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Which of the following does not refer to electrical energy?
Volt-ampere
Joule
Watt-second
Volt-coulomb
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36 F
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When capacitors are connected in parallela the total capacitance is
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Smaller than the smallest capacitor
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60 W
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15 W
4 W
In a complex number 5 + j 10a 10 is called ___ part.
Imaginary
Real
Conjugate
Integer
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2/V
AV
A2
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0.577 times peak value
0.577times average value
0.707times rms value
Which of the following dielectric materials makes the highest-capacitance capacitor?
Air
Barium-strontium titanite
Mica
Electrolyte
If two resistances of 9 and 6 are connected in parallela the total resistance is
Which of the following does not generally affect the value of a capacitor?
The dielectric material used
The surface area of the plates
The thickness of the dielectric
The voltage applied to the plate
The capacitance of a capacitor is ___ relative permittivity.
Directly proportional to
Inversely proportional to
Equal to
Inversely proportional to the square of
If three 9 mH inductors are connected in parallel without mutual inductance then the total i nductance is
3 mH
9 mH
27mH
18 mH
At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 F?
7.12 kHz
7.12 Hz
7.12MHz
7.12 GHz
In a parallel bank with unequal branch resistances
The highest R has the highest I
The lowest R has the highest V
The lowest R has the highest V
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The graph between an alternating quantity and time is called
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Curve
Waveform
A plot
In an ac circuit with XL and R in seriesa the
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What is the value of a carbon composition resistor with the following color code: Browna whitea orangea red
190 ; 10 %
19 k ; 2 %
19 k ; 20 %
1.9 k ; 2 %
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Directly proportional to
Inversely proportional to
Independent to
Equal to
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Stores electrical energy
Opposes changes in current flow
Creates a dc resistance
Converts ac to dc
The temperature-resistance coefficient of pure gold is
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Moving the coils closer
Moving the coils apart
Decreasing the number of turns of either coil
Increasing the number of turns of either coil
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Equals its peak value
Equals its peak-to-peak value
Peak divided by square root of two
Peak divided by pi