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• 7. Current 10cos(377t) A flows into a series RL circuit with parameters L=1mH and R=10Ω.Determine av
• 8. A 1052 resistive load is applied by 100cos(377t) V. Choose a false statement.(A)instantaneous pow
• 9. For an AC circuit, choose a false statement.(A)inductive current lags inductive voltage(B)capacit
• 10. Determine the power factor of a ioad with impedance 10+j10Ω.(A)0.707 leading(B)0.707 lagging(C)0
• 11. A delta-connected resistive load 100Ωper phase is connected to a balanced three-phase three-wire
• 12. A Y-connected resistive load 40Ωper phase is connected to a balanced three-phase four-wirevoltag
• 13. For an ideal transformer, voltage at the primary side and the secondary side are 500V and 100V,r
• 14. For a two-winding coupling device in an AC circuit, choose a false statement.(A)coupling coeffic
• 15. Determine RMS value of a half-wave rectified sine wave with amplitude 100V.(A)141.4V(B)100V(C) 7
• 16. An ideal buck converter is operated in CCM mode. Input voltage is 20V, output voltage is 10V and
• 17. An ideal boost converter is operated in CCM mode. Input voltage is 10V and output voltage is 50V
• 18. Determine the speed of rotation of a synchronous generator with parameters 480V/60Hz/sixpoles/de
• 19. A four-pole, 60Hz induction motor supplies 15kW to a load at a speed of 1710 rpm. Determinerotor
• 20. Consider load flow in an inductive feeder. Choose a true statement.(A)real power flow is primari
• 2. In a DC circuit, a load is connected to a Thevenin's equivalent circuit (Thevenin voltage=20
• 3. Determine power consumption of two resistors in parallel connection. Assume the resistor is 10Qfo
• 4. Determine the time constant of a RC first-order circuit with C=2F and R=2Ω.(A) 4s(B) 2s(C) 0.5s(D
• 5. A series RLC second-order circuit is given with parameters L-=4H, C=0.25F, R=40 Ω. Choose afalse
• 6. In an AC circuit, choose a false statement.(A)the impedance of a resistor increases with increasi
• 7.In TAIWAN, single-phase three-wire 110V is common in domestic power systemn. Choose a truestatemen
• 8. How to calculate the average power consumed by an AC circuit?(A) voltage phase times current phas
• 9.What is the definition of power factor?(A)average power divided by apparent power(B)average power
• 10. Determine the power factor of a load with impedance 10-j10Ω.(A)0.707 lcading(B)0.707 lagging(C)0
• 2 下列那一種 和 H2O2 的代謝無關？(A) Superoxide dismutase(B)Hydroxylase(C) Catalase(D) Peroxidase
• 3 下列何者很少用在基因重組技術的實驗？(A) 限制 (Restriction enzymes)(B) 接合 (Ligase)(C)DNA 聚合 (DNA polymerase)(D) 終端 (Tel