If the frequency of teh AC voltage accross an inductor is doubted, the inductive
ID: 1504791 • Letter: I
Question
If the frequency of teh AC voltage accross an inductor is doubted, the inductive reactance of that inductor increases to 4 times its original value. increases to twice its original value. decreases to one-fourth its original value. dicresset to one-half its original value. The angle of incidence must equal tho angle of reflection is always greater than the angle of reflection. is always less than the angle of reflection. may be greater than, less than, or equal to the angle of reflection. In each element of a series IRC circuit the voltages are in phase. the currents and voltages are in phase. the currents are not in phase. the currents are in phase. the currents and voltages are not in phase. You can only see a rainbow if the sun is 90^deg to the side. the sun is in front of you. the sun is 180 to the side. the sum is behind you. An index of refraction less than one for a medium would imply that that the speed of light in the medium is the same as the speed of light in vacuum. refraction is not possible. reflection is not possible. that the speed of light in the medium is greater than the speed of light in vacuum. that the speed of light in the medium is less than the speed of light in vacuum. What would be the resonant frequency of an LRC circuit with R = 15 omega, L = 25 mH, and C = 30 muF? 120 Hz 1150 Hz 53 MHz 60 Hz 180 Hz If the ac peak current through a 100 ohm resistor is 1.7 A, the average power dissipated by the resistance is 220 W. 289W. 143 W. 85W. 170W. If the frequency of the AC voltage across a capacitor is doubled, the capacitive reactance of that capacitor becomes zero. decreases to one-fourth its original value. increases to 4 times its original value. decreases to one-half its original value. increases to twice its original value. Consider an RLC circuit that is driven by an AC applied voltage. At resonance, the peak voltage across the capacitor is greater than the peak voltage across the inductor. the current is in phase with the driving voltage. the peak voltage across the inductor is greater than the peak voltage across the capacitor. the peak voltage across the resistor is equal to the peak voltage across the inductor.Explanation / Answer
27)
XL = wL
so
B) increases to twice its original value
29)
E) the currents and voltages are not in phase
31)
E)
32)
at resonance
f = 1/2pi x sqrt (LC)
f = 180Hz
33)
E)
34)D
35)B