19. An electronic circuit has a 60mH inductor and a 30mH inductor connected in para ...
19. An electronic circuit has a 60mH inductor and a 30mH inductor connected in parallel. What is the total inductance of the circuit? A. 75mH B. 35mH C. 20mH D. 90mH 20. Which of the following values is equal to one picofarad? A. 1×10−3F B. 1×10−12F C. 1×10−10F D. 1×10−6F 21. What is the total inductance of a circuit that contains two 10μH inductors connected in parallel? A. 5μH B. 15μH C. 20μH D. 8μH 22. An RC circuit is in its fifth time constant. Which one of the following statements is correct? A. The voltage across the resistor is still increasing. B. The capacitor is fully charged. C. The resistor voltage is near maximum. D. The voltage across the capacitor is still decreasing. 23. What type of meter is used to directly find the capacitance value of an unknown capacitor or to check the condition of a known capacitor? A. Oscilloscope B. VOM meter C. Megohm meter D. LCR meter 24. What is the time constant of a 2mH inductor and a 200Ω resistor connected in series? A. 10msec B. 1μsec C. 1msec D. 10μsec 25. If an RC circuit is supplied with 20VDC and the circuit is in its second time constant, how much voltage is present across the capacitor? A. 17.26V B. 12.74V C. 18.14V D. 15.19V