AC Fundamentals, Circuit and Circuit Theory If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave? 30 sin 50 t 42.42 sin 314 t 60 sin 25 t 84.84 sin 25 t 30 sin 50 t 42.42 sin 314 t 60 sin 25 t 84.84 sin 25 t ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Time constant of a circuit is the time in seconds taken after the application of voltage to each 50% of maximum value 90% of the maximum value 63% of maximum value 25% of maximum value 50% of maximum value 90% of the maximum value 63% of maximum value 25% of maximum value 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 reduced by half Be doubled Be four times at high Be reduced to one fourth Be reduced by half Be doubled Be four times at high Be reduced to one fourth ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory In any A.C. circuit always Actual power is more than reactive power Reactive power is more than actual power Apparent power is more than actual power Reactive power is more than apparent power Actual power is more than reactive power Reactive power is more than actual power Apparent power is more than actual power Reactive power is more than apparent power ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory For the same peak value which of the following wave will 'have the highest r.m.s. value? Sine wave Half wave rectified sine wave Square wave Triangular wave Sine wave Half wave rectified sine wave Square wave Triangular wave ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Inductance of coil Increases with the increase in supply frequency Decreases with the increase in supply frequency Becomes zero with the increase in supply frequency Is unaffected by the supply frequency Increases with the increase in supply frequency Decreases with the increase in supply frequency Becomes zero with the increase in supply frequency Is unaffected by the supply frequency ANSWER DOWNLOAD EXAMIANS APP
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