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If you have an alternating current, which changes direction, and we graph the direction in terms of positive and negative, then at some point, as the current changes from positive to negative, and from negative to positive, it must pass through zero. If you imagine a car, driving forwards, that then changes direction and drives in reverse, there must be a point when it is not moving. Changes of direction, or voltage, are not instantaneous.
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What is the period of compound pendulum when pivot point and centre of gravity of a body is same?
it become zero
Under what circumstances would your weight become zero?
The weight will become zero under the following circumstances:In an artificial satelliteDuring free fallAt the centre of the earthAt a point where gravitational pull of earth is equal to the gravitational pull of the moon.
What is restriking voltage?
Restriking voltage is transient voltage. During the arcing time, at current zero, the voltage that shows up across the contacts is the restriking voltage.
What is a zero reference point?
It is a point that is declared to be zero for the purposes of calculations.
Value of accelaration due to gravity at the centre of the earth?
Zero.
What is the period of compound pendulum when pivot point and centre of gravity of a body is same?
it become zero
What is a zero point?
A zero point is the location of the centre of the burst of a nuclear weapon at the instant of detonation.
Under what circumstances would your weight become zero?
The weight will become zero under the following circumstances:In an artificial satelliteDuring free fallAt the centre of the earthAt a point where gravitational pull of earth is equal to the gravitational pull of the moon.
What is the definition of grounding as in electricity?
It is where a point in a circuit is at zero voltage.
How the center of the center tapped transformer is zero volts?
The centre of the (secondary of the) centre tapped transformer is zero volts because that is the point in the circuit on which you based your measurement. If you were to connect the reference meter lead to the end of the winding, then the centre tap would have voltage on it. Its all a matter of perspective, i.e. reference. It also happens that the centre tap is usually grounded and, since you usually connect the meter's reference lead to ground, if you connect the meter's reading lead to the same point, you would logically expect there to be a zero volts differential. Its the same as connecting the two leads together.
How do you draw DC load line and determine the Q point?
we should be take two point from the the graph between collector current and emitter-collector voltage.. along the horizontal line collector current is zero and emitter-collector voltage become Vcc,and along the vertical line emitter-collector voltage is zero and collector current become Vcc/RL then by this line that drow between this two point is called load line that in this line the transistor allowed to operate....
Can the terminal voltage of a battery be zero?
No, Terminal voltage of a battery can't be zero. For example, if my mobile's battery is at low charge. It is showing only one point of charge on screen, but there will be no fluctuation on its screen, all the other features like audio, video, display will remain same unless it will become fully out of charge. Charge could be zero but the voltage can't be zero. Well, actually the terminal voltage of a battery can be zero, but only when the battery is totally dead and unable to take a charge (if it was a rechargeable type battery). At this point it must be disposed of. One exception is wet cell batteries (like lead acid), if the liquid electrolyte is removed the terminal voltage goes to zero but the battery is still good and can be restored to normal operation by refilling it with electrolyte. In fact wet cell batteries are often sold fully charged but with no electrolyte and their terminal voltage is thus zero on the store shelf until the salesman fills them with electrolyte.
What is the instantaneous voltage at 180 degrees for peak voltage of 150 volts?
Zero. If voltage starts at zero at zero degrees, it rises to peak voltage at 90 degrees. Voltage then reaches zero at 180 degrees and heads for negative peak voltage at 270 degrees and then back to zero at 360 degrees.
What is zero voltage switching?
Zero Voltage switching is a standard used to describe electrical appliances which turn on or off only when the output voltage is Zero.
What is the zero point on the absolute scale defined as?
SZero point in the absolute scale is the temperature at which the kinetic energy of the molecule becomes Zero. For a constant pressure volume would become zero and at constant volume pressure would become zero at this absolute zero temperature.
What is voltage in electricity?
A measure of potential. A charge Q at a voltage V has energy QV and that is the energy released if in a circuit it is allowed to travel to a point of zero V. Voltage is sometimes called "Potential".
Why voltage across points in power supply suddenly drops to zero?
Because of one point is fall to the earth.
