Can someone help me with some questions on AC electronics? their quite

ndsupermegafan

New member
simple i just want a 2nd opinion.? #2? 25. In a series RC circuit defined as 15k ohms - j20 k ohms, another equal expression is? a)35k ohm<-53degree b)-j5 k ohm c)35 k ohm or d)25 k ohm, 0z= -53degrees

26. Oz for a series RC circuit with impedance 5k ohm - j2k ohm is ____ degrees?

31. Any whole # multiples of a fundamental are called?

32. A series RLC circuit has an inductor with a reactive power of 20 VAR and a capacitor with a reactive power of 30VAR. if the resistor in the circuit dissipates 8 watts (real power), what is the apparent power?

33. A series RLC circuit where Rt = 300 ohm, Ct = 0.02 micro F, and Lt = 75 mH has a total impedance of __?___ if applied frequency is 5 kHz.

34. A parallel circuit has a capacitor with a reactive power of 70 VAR and a inductor with a reactive power of 50 VAR. if the resistor in the circuit dissipates 18 watts, what is the apparent power?

35. In a series RLC circuit tuned to resonant frequency, the net reactive voltage (Vc and Vl combined) is?

36. In a parallel RLC circuit, current through the capacitor leads the current through the inductor by ______ degrees?

37. What is the resonant frequency of a series RLC circuit composed of a 5 micro F capacitor and a 90 micro H coil?

38. A 70mH and a 30mH coil have a coupling coefficient of .75. the mutual inductance is _____ mH?

39. An iron core transformer has a turns ratio of 20:1. what would be the voltage in the secondary if the 10 VAC were applied to the primary?

41. A transformer has one primary winding and two secondary windings. all windings share one iron core. power in the primary is 60 watts and power in one secondary is 45 watts. what is the power in the remaining secondary winding?

42. which of the following general classes of passive filters is used to attenuate a selected frequency? a.)bandpass b.)bandstop c.)notch or d.) both b and c.

47. A ______ circuit provides a low impedance connection between an underground and grounded point in a circuit?

48. The impedance of a series RLC circuit at resonance is_____?

49. If the inductance in a series RLC circuit were to increase, the resonant frequency would ______?

50. If the plates of a variable capacitor are moved farther apart, the capacitors capacitance will ______?
 
not to be rude, but this looks like homework, and I don't think anyone is going to give you the answers for that for 2 reasons: first we realy shouldn't, and second the questions make no sense, and are somehow boring
 
just the ones I can answer easily

25 d looks closest without going thru the calculations
26 Oz? land of oz?
31 harmonics
35 zero
39 if the 20:1 is primary to secondary, then output is 10/20 = 0.5 VAC
41 15 watts minus losses, which typically are 6 watts (90% efficiency)
42 notch
47 huh? what is an underground connection?
48 R
49 go down
50 decrease
 
just the ones I can answer easily

25 d looks closest without going thru the calculations
26 Oz? land of oz?
31 harmonics
35 zero
39 if the 20:1 is primary to secondary, then output is 10/20 = 0.5 VAC
41 15 watts minus losses, which typically are 6 watts (90% efficiency)
42 notch
47 huh? what is an underground connection?
48 R
49 go down
50 decrease
 
Back
Top