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DC is used for extra-high voltage transmission systems, as there are less losses with DC than with AC, and no synchronising problems.
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∙ 12y ago
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Will value of J be same if ac were used instead of dc?
The number of Joules (energy) is the same as dc provided the RMS values of the ac quantities are used.
Why is AC used?
The power source is AC. Hence AC is used. DC application is limited.
What will happen if you use AC voltage instead of DC voltage?
For some equipment it doesn't matter, other types of equipment will be destroyed. For a simple electric heater or an incandescent bulb AC or DC are acceptable, provided the rms voltage of the AC is equal to the DC voltage. If the heater has a time switch, DC is unacceptable. A DC motor may or may not work with AC depending on its type and size. The commutator motor as used in vacuum cleaners is essentially a DC motor, but most types of AC motor are not interchangeable to DC. Electronic circuits usually required a DC supply and if AC is applied many of the components will be destroyed.
Does the galvanometer measures AC and DC current?
It is used to detect very small DC currents only. For AC signals Detectors are used.
What are all the drawbacks of Direct current?
Disadvantages of DC: * High power transformation of voltage is less convenient than AC. AC uses a transformer. * DC does not have the natural break in transmission that AC has (zero twice per cycle) and does not switch off as easily * DC does not provide time to synchronous clocks * DC dynamos or generators are less efficient at converting input power to output electricity than AC alternators. That is why altenators with rectifiers are now used in vehicles instead of DC dynamos.
Will value of J be same if ac were used instead of dc?
The number of Joules (energy) is the same as dc provided the RMS values of the ac quantities are used.
What are the roles of a diode and a capacitor in an AC-DC converter?
An AC-DC converter you can operate a device on AC instead of batteries. ~bobbyjack~ : D
Why not you use ac instead of dc to electronic components?
AC is easier and cheaper to send from the generators to the consumers than DC is.
Is commutator used for both ac to dc and dc to ac conversion?
Yes
Why we used ac volt in supply line instead of dc volt?
AC voltage is more sufficient than DC voltage. Moreover, an AC transformer can be developed but DC voltage will make it harder. Without a transformer, we cannot turn the high and low voltaged into each-other.
Can you use AC instead of DC for superposition theorem?
Yes, the theorem still applies for AC.
What is a DC AC inverter used for?
A DC/AC power inverter is used to convert DC, the power that comes from a car's battery, into AC, the kind of power that is supplied to a home and used to power larger electronics.
Which diode are usd are rectifying ac into DC?
Junction diodes are used for rectifying ac into dc.
Why is AC used?
The power source is AC. Hence AC is used. DC application is limited.
How do you build a dc to dc converter?
A DC to DC converter is basically a type of switching power supply. The switcher converts the input DC to AC. A transformer is used to convert the AC to the desired voltage. A rectifier, filter, and optional regulator is used to convert the AC back to DC.
Does an SCR work on DC or ac?
SCR's are mainly used in AC circuits. They could be used in DC circuits but they then would not be able to turn off. They require the zero crossing of the AC circuit to turn off. Then when positively biased they can be turned back on.
What devices can be used to block DC and pass AC?
simple capacitor can do this job (to block dc and pass ac).
