Tag: ac and dc
Questions Related to ac and dc
The advantage of ac over dc is that:
Transformer is used for
State whether the following statement is True or False.
The induced current produced in a closed coil is always direct current.
Identify the two types of current exist in physics.
$AC$ and $DC$ can be distinguished using.
A transistor based radio receiver set (effective resistance of the order of 18 ohms) operates on a 9V dc battery. If this replaced by a dc power supply with rating 9V, 500A then:
An A.C. source is rated $220V,50Hz$. The average voltage is calculated in a time interval of $0.01s$, it-
Hotwire ammeters are used for measuring _____________ currents.
As the frequency of an alternating current increases, the impedance of the circuit
If $\vartheta $ is the phase difference and T is time period then time difference between current and voltage is ;