AC Fundamentals, Circuit and Circuit Theory The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes __________ ohms. 15 10 2.5 5 15 10 2.5 5 ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to Peak voltage Average voltage R.m.s. voltage None of the listed here Peak voltage Average voltage R.m.s. voltage None of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The time constant of the capacitance circuit is defined as the time during which voltage Rises to 63.2% of its final steady value None of these Falls to 36.8% of its final steady value Rises to 38.6% of its final steady value Rises to 63.2% of its final steady value None of these Falls to 36.8% of its final steady value Rises to 38.6% of its final steady value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The frequency of an alternating current is The number of electrons passing through a point in one second The speed with which the alternator runs The number of waves passing through a point in one second The number of cycles generated in one minute The number of electrons passing through a point in one second The speed with which the alternator runs The number of waves passing through a point in one second The number of cycles generated in one minute ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Pure inductive circuit Consumes some power on average Does not take power at all from a line Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle None of the listed here Consumes some power on average Does not take power at all from a line Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle None of the listed here ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The peak value of a sine wave is 200 V. Its average value is 200 V 141.4 V 282.8 V 127.4 V 200 V 141.4 V 282.8 V 127.4 V ANSWER DOWNLOAD EXAMIANS APP
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