AC Fundamentals » Exercise - 1 10. Power factor of the following circuit will be zero ________. (a) inductance (b) capacitance (c) resistance (d) both (a) and (b)
AC Fundamentals » Exercise - 1 6. In an A.C. circuit power is dissipated in ________. (a) resistance only (b) inductance only (c) capacitance only (d) none of the above
AC Fundamentals » Exercise - 1 14. A two element series circuit with an instantaneous current I – 4.24 sin (5000t + 450) A has a power of 180 watts and a power factor of 0.8 lagging. The inductance of the circuit must have the value ________. (a) 3 H (b) 0.3 H (c) 3 mH (d) 0.3 mH
AC Fundamentals » Exercise - 1 23. A sine wave has a positive going zero crossing at 00 and an rms value of 20 V. What is its instantaneous value at 1450 ________. (a) 7.32 V (b) 16.22 V (c) 26.57 V (d) 21.66 V