According to Gauss theorema flux can be equated to
Charge
Field intensity
Current
Voltage
Correct Answer :
A. Charge
Related Questions
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.
900 k
900 M
900 G
In an inductive coila the rate of rise of current is maximum
Near the final maximum value of current
At midvalue of current
At half-power points
After one time constant
An impedance given by 90 -45� is a/an ___ impedance.
Inductive
Conductive
Resistive
Capacitive
What is considered as the most important value of a sine wave?
Effective value
Peak value
Average value
Instantaneous value
In a multiple capacitora the plate area is
Increased
The same
Decreased
Variable
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 wave with twice the amplitude
A wave with half the amplitude
Zero signal
A wave with twice the frequency
Which of the following is a common material used in wire-wound resistors?
Manganin
Carbon
Bronze
German silver wire
When two in-phase sine waves that have identical frequency and amplitude are added togethera then the result is a sine wave with ___ the amplitude of either.
Half
Twice
Four times
One-fourth
If a coil has a Q of 10a it means that
The energy stored in the magnetic field of the coil is 10 times the energy wasted in its resistance
The energy wasted in its resistance is 10 times the energy stored in the magnetic field of the coil
It is a low Q coil
It is a high Q coil
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.
Inductance
Capacitance
Resistance
Impedance
In dividing or multiplying phasor quantitiesa ___ form is used.
Polar
Rectangular
Trigonometric
Exponential
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.
40 H
40 mH
40 pH
40 nH
When resistance are connected in parallela the total resistance is
Less than the smallest resistance in the connection
Greater than the smallest resistance in the connection
Between the smallest and greatest resistance in the connection
Increasing and decreasing depending upon the supply voltage
A resistor wound with a wire doubled back on itself to reduce the inductance.
Bifilar resistor
Wire-wound resistor
Anti-inductive resistor
Bleeder resistor
Rationalizing the denominator of a complex number means
Eliminating the j component in the denominator
Adding j component in the denominator
Eliminating the j component in the numerator
Adding j component in the numerator
When the temperature of copper wire is increased its resistance is
Increased
Decreased
Constant
Zero
Electron flow assumes charges flow from
Negative to positive
Negative to negative
Positive to negative
Positive to positive
In an RL series circuita
Current lags voltage by less than 90�
Current lags voltage by 180�
Current lags voltage by 90�
Current leads voltage by 90�
What is the rms value of a square wave?
Equals its peak value
Equals its peak-to-peak value
Peak divided by square root of two
Peak divided by pi
For series capacitorsa total charge is
The sum of individual charges
Equal to the charge of either capacitors
Equal to the product of the charges
The quotient of the charges
Norton�s theorem is what form of an ac equivalent circuit?
Voltage
Current
Both voltage and current
Neither voltage nor current
For a linear circuita ___ voltage or current is used to calculate average power.
Rms
Peak
Average
Instantaneous
A series RLCcircuit has a ______ power factor at its half-power points
Unity
Leading
Lagging
Either B or C
What is expected when two 20 k a 1 watt resistor in parallel are use instead of one 10 k a 1 watt?
Provides higher current
Provides less power
Provides more power
Provides wider tolerance
In Norton�s theorema the short circuit current is obtained by
Opening the load terminals
Shorting the load terminals
Opening the voltage source
Shorting the voltage source
What maximum voltage can be applied across the capacitor of time?
Working voltage
Surge voltage
Stray voltage
Peak voltage
If the output resistance of a voltage source is 4 a it internal resistance should be
Infinite
A capacitor is used to
Block dc current
Pass dc current
Open voltage source
Short the voltage source
If two resistances of 9 and 6 are connected in parallela the total resistance is
An open inductor has
Zero resistance and infinite inductance
Infinite resistance and zero inductance
Infinite resistance and infinite inductance
Zero resistance and zero inductance