AC Fundamentals, Circuit and Circuit Theory The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 ohm. If frequency is increased to 100 Hz, reactance becomes __________ ohms. 25 10 5 15 25 10 5 15 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In AC. circuits, laminated iron is invariably used in order to Reduce circuit permeability Reduce eddy current loss Increase heat radiation Make assembly cheap and easier Reduce circuit permeability Reduce eddy current loss Increase heat radiation Make assembly cheap and easier ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Form factor for a sine wave is 1.11 0.637 0.707 1.414 1.11 0.637 0.707 1.414 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will Be four times at high Be reduced to one fourth Be doubled Be reduced by half Be four times at high Be reduced to one fourth Be doubled Be reduced by half ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory For a frequency of 200 Hz, the time period will be 0.005 s 0.0005 s 0.05 s 0.5 s 0.005 s 0.0005 s 0.05 s 0.5 s ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of Iron loss in core Increase in temperature Skin effect Capacitive effect between adjacent coil turns Iron loss in core Increase in temperature Skin effect Capacitive effect between adjacent coil turns ANSWER DOWNLOAD EXAMIANS APP
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