____18. Identify the dc source among the circuit elements shown below: ____19. The reactance/resistance of which of the following increases linearly as a function of frequency? a. Capacitor b. Inductor c. Resistor ____20. Which one of the following shows the reactance of a resistor as a function of frequency? ____21. What is the angle between the electric and magnetic fields in an electromagnetic wave? a. 00 b. 450 c. 900 d. 1200 e. 1800 ____22. What type of radio waves are used to communicate with submerged submarines? a. AM b. FM c. ELF d. VHF e. SW f. UHF ____23. Which one of the following is a FM wave? -----------------------------------------------------------end of MC questions-------------------- B. A generating station is producing 1.6 x 106 W of power at 1100 V. A transformer with 30 turns in the primary and 18,000 turns in the secondary is used to change the voltage before the power is transmitted. What is the current in the transmission lines? C. In a RCL circuit, a resistor, a capacitor, and a 5.30-mH inductor are connected in series. Calculate the resonance frequency of this circuit. D. The operation of a positive ion mass spectrometer is illustrated below. Sketch a similar diagram for a negative ion mass spectrometer, inside the empty box on the right. Force (F) on a moving charge in Centripetal force is given Circumference of a a magnetic field is given by: by: circle:
____18. Identify the dc source among the circuit elements shown below: ____19. The reactance/resistance of which of the following increases linearly as a function of frequency? a. Capacitor b. Inductor c. Resistor ____20. Which one of the following shows the reactance of a resistor as a function of frequency? ____21. What is the angle between the electric and magnetic fields in an electromagnetic wave? a. 00 b. 450 c. 900 d. 1200 e. 1800 ____22. What type of radio waves are used to communicate with submerged submarines? a. AM b. FM c. ELF d. VHF e. SW f. UHF ____23. Which one of the following is a FM wave? -----------------------------------------------------------end of MC questions-------------------- B. A generating station is producing 1.6 x 106 W of power at 1100 V. A transformer with 30 turns in the primary and 18,000 turns in the secondary is used to change the voltage before the power is transmitted. What is the current in the transmission lines? C. In a RCL circuit, a resistor, a capacitor, and a 5.30-mH inductor are connected in series. Calculate the resonance frequency of this circuit. D. The operation of a positive ion mass spectrometer is illustrated below. Sketch a similar diagram for a negative ion mass spectrometer, inside the empty box on the right. Force (F) on a moving charge in a magnetic field is given by: Centripetal force is given by: Circumference of a circle:
T3%20S2017%20corrected.docx