Answer Happy

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question, 1s 4A Ер 100V LOAD 20 TURNS 30 TURNS Figure 23,3 8) See Figure 23.3. What is the transformation ratio for this transformer? B) 20 C) 0.667 A) 30 D) 15 Zp- 80 Figure 22.4 9) See Figure 23.4. An 80 load is connected to the transformer secondary as shown. What is the primary impedance Zp if the primary has 160 turns and the secondary has 10 turns? A) 1280 B) 20480 C) 20 D) 050 10) 10) An ideal transformer has 200 primary turns and 20 secondary turns. What is the secondary voltage if the primary voltage is 120 V? A) 120 V B) 12,000 V C) 12 V D) 1200 V E) 1.2V TRUE/FALSE. Write 'T' if the statement is true and it the statement is false. 11) In general, the three-phase system is more economical than the single-phase system for transmitting power at a fixed kVA. 11) 12) ) 12) Three phase energy distribution systems are more efficient than multiple single phase systems 13) The phase currents and the line currents are equal in magnitude in the wye system. 13)