AC Fundamentals, Circuit and Circuit Theory Time constant of a circuit is the time in seconds taken after the application of voltage to each 90% of the maximum value 63% of maximum value 50% of maximum value 25% of maximum value 90% of the maximum value 63% of maximum value 50% of maximum value 25% of maximum value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Capacitive reactance is more when Capacitance is less and frequency of supply is more Capacitance is more and frequency of supply is less Capacitance is less and frequency of supply is less Capacitance is more and frequency of supply is more Capacitance is less and frequency of supply is more Capacitance is more and frequency of supply is less Capacitance is less and frequency of supply is less Capacitance is more and frequency of supply is more ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Inductance of coil Decreases with the increase in supply frequency Is unaffected by the supply frequency Increases with the increase in supply frequency Becomes zero with the increase in supply frequency Decreases with the increase in supply frequency Is unaffected by the supply frequency Increases with the increase in supply frequency Becomes zero with the increase in supply frequency 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 Square wave Half wave rectified sine wave Triangular wave Sine wave Square wave Half wave rectified sine wave Triangular wave ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory The form factor is the ratio of r.m.s. value to average value None of these Average value to r.m.s. value Peak value to r.m.s. value r.m.s. value to average value None of these Average value to r.m.s. value Peak value to r.m.s. value ANSWER DOWNLOAD EXAMIANS APP
AC Fundamentals, Circuit and Circuit Theory Inductance affects the direct current flow At all the time of operation Only at the time of turning off At the time of turning on and off Only at the time of turning on At all the time of operation Only at the time of turning off At the time of turning on and off Only at the time of turning on ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS