2011年7月にGeneralが変更になっており、2012年7月にはExtraが変更になります。 Element
2 : 2010.07.01 - 2014.06.30 Technician Element 3 : 2011.07.01 - 2015.06.30
General Element 4 : 2008.07.01 - 2012.06.30 Extra
ONE DAY EXTRA テクニシャン、ジェネラル、エクストラを順に受験、合格した場合を、”ONE DAY EXRA”と呼んでいます、受験結果の様子では約3割くらいの方がこの快挙を得てEXTRA合格証書を持って帰宅しています、従って受験する場合はテクニシャンだけ、テクニシャン、ジェネラルまでと言わず、エクストラを含めて勉強し受験することをお勧めします。 これに必要なのは模擬試験の実施です、受験前1週間は模擬試験を行ってレベルを上げるようにしてください。
E5B07
(C) What is the phase angle between the voltage across and the current
through a series R-L-C circuit if XC is 500 ohms, R is 1 kilohm, and XL is 250
ohms? A. 68.2 degrees with the voltage leading the current B. 14.0 degrees
with the voltage leading the current C. 14.0 degrees with the voltage lagging
the current D. 68.2 degrees with the voltage lagging the
current 正解はCです。 実際に計算すると、 Z=1000+j250−j500=1000−j250Ω r=√(1000x2乗ー250x2乗)=1030 Θ=Tanx−1 (−250/1000)=−14° Z=1030、−14° と成ります
E5B11
(B) What is the phase angle between the voltage across and the current
through a series RLC circuit if XC is 25 ohms, R is 100 ohms, and XL is 50
ohms? A. 14 degrees with the voltage lagging the current B. 14 degrees
with the voltage leading the current C. 76 degrees with the voltage lagging
the current D. 76 degrees with the voltage leading the current
正解はBです。 上の発想で解くと まずは14を選ぶ、XCとXLを比較XLが大きい。電圧が進む、で正解はB
今度は位相が加わった問題です。
E5C01
(B) In polar coordinates, what is the impedance of a network consisting of a
100-ohm-reactance inductor in series with a 100-ohm resistor? A. 121 ohms at
an angle of 35 degrees B. 141 ohms at an angle of 45 degrees C. 161 ohms
at an angle of 55 degrees D. 181 ohms at an angle of 65 degrees
E5C02
(D) In polar coordinates, what is the impedance of a network consisting of a
100-ohm-reactance inductor, a 100-ohm-reactance capacitor, and a 100-ohm
resistor all connected in series? A. 100 ohms at an angle of 90 degrees B.
10 ohms at an angle of 0 degrees C. 10 ohms at an angle of 90 degrees D.
100 ohms at an angle of 0
degrees
E5C03
(A) In polar coordinates, what is the impedance of a network consisting of a
300-ohm-reactance capacitor, a 600-ohm-reactance inductor, and a 400-ohm
resistor, all connected in series? A. 500 ohms at an angle of 37
degrees B. 900 ohms at an angle of 53 degrees C. 400 ohms at an angle of 0
degrees D. 1300 ohms at an angle of 180
degrees